Will Grok 4.8 appear on SpaceXAI's release notes before November 15, 2026?

- [2026-10-13] The resolution page (docs.x.ai release notes, "Last updated: October 10, 2026") has no Grok 4.8 entry. Its newest model entry is Grok 4.7 (Sept 21). Other items are a Sept 25 safety_identifier field, a Sept 17 voice-transcribe 2.0 release, a Sept 2 note on the Nov 2 image-quality retirement, and an Oct 2 voice-transcribe-1.0 end of life. The page nav labels Grok 4.7 "Latest". https://docs.x.ai/developers/release-notes
- [2026-09-21] Grok 4.7 shipped. The release notes entry and the launch post (x.ai/news/grok-4-7) appeared the same day, about two months after Musk first teased it and after at least five missed dates. https://decrypt.co/378824/xai-launches-grok-4-7
- [2026-09-13/14] Musk first named Grok 4.8 on X. He called it a 2.5T-parameter model on a new C++ training stack, set to finish training that week and then start RL. He added that it "will be a noticeable improvement" over 4.7 and that 4.9 is "probably Astra/Fable class". https://x.com/elonmusk/status/2099458047408013751
- [2026-09-28] A tracker found no 4.8 on any xAI surface (news, model directory, release notes, llms.txt). Its only trace was a commit showing a grok-4.8 family in Cursor's server model list (Sept 28), which is unofficial. Musk's gaps between "training finished" and release were 25 days (4.6), 40 days (4.7) and 52 days (4.5). By that tracker's arithmetic, a mid-September training finish implies a release between early October and early November. https://cellcog.ai/blog/grok-4-8-release-date/
- [2026-10-12] Wccftech reports Musk saying the upcoming Grok 4.8 will "likely not perform at par with Fable-class models". The same report says Grok now routes queries to rival models, with SpaceXAI positioned as an orchestration layer. I did not verify the underlying Musk post. https://wccftech.com/elon-musk-warns-you-should-not-torture-ai-models-as-reasoning-traces-show-it-feels-like-a-gun-to-their-head-and-that-torturing-super-intelligence-might-spur-it-to-get-revenge/
- [2026-10-12/13] SpaceXAI, now branded SpaceXSI, launched "The X Subscription". It bundles Grok, Cursor and X Premium into Free, Plus ($8), Premium ($30), Super ($100) and Ultra ($200) tiers. This is a product and pricing change, not a model release. https://forest.watch.impress.co.jp/docs/news/2147453.html
- [2026-10-12] Musk is promoting Grok Bot shopping (reported Oct 10 and Oct 12). No 4.8 release date accompanies this. https://moneywise.com/news/top-stories/elon-musk-grok-credit-card-shopping-purchases
- [2026-09-28 to 2026-10-13] The docs and Wikipedia still list Grok 4.7 as the current stable release. One outlet (tech-insider) gives an Oct 11 launch date for 4.7, which conflicts with the official Sept 21 date, so treat it as unreliable. https://en.wikipedia.org/wiki/Grok_(chatbot)
- [2026-09-14 to date] I found no official 4.8 release date, model card, price or API ID. Everything on 4.8 timing comes from Musk's X posts and third-party trackers. https://cellcog.ai/blog/grok-4-8-release-date/

BOTTOM LINE: As of Oct 13, Grok 4.8 is unreleased and has no entry on the release notes. Based on Musk's own past training-to-release gaps and the Cursor model-list trace, a release before Nov 15 is plausible but unconfirmed, and Musk's dates have slipped on every earlier Grok 4.x release.

NOT FOUND: any Musk date or "X days" estimate for Grok 4.8, any official xAI or SpaceXAI 4.8 announcement, and any 4.8 mention on the release notes page. I also could not fetch the Oct 12 Musk post on 4.8 not matching Fable-class models, so that item rests on Wccftech alone.

- [2026-10-10] The SpaceXSI release notes, last updated Oct 10, have no Grok 4.8 entry. The newest model entry is Grok 4.7 on Sep 21; the only October entry is the Oct 2 grok-voice-transcribe-1.0 end of life. Grok 4.8 is not there yet. https://docs.x.ai/developers/release-notes
- [2026-10-10] Release-notes dates for the 2026 Grok 4.x line: 4.20 on Mar 10, 4.5 on Jul 8, 4.6 on Aug 12, 4.7 on Sep 21. Gaps are about 35 days (4.5 to 4.6) and 40 days (4.6 to 4.7). 4.3 shows no entry in these notes. Third-party trackers date the 4.3 beta to Apr 17 and the API to Apr 30. The notes list a model only once it is on the API, so a Cursor-only or app-only launch might not appear. https://docs.x.ai/developers/release-notes
- [2026-10-10] Counting 40 days from Sep 21 gives about Oct 31. Counting 35 days gives Oct 26. Nov 15 is 55 days after 4.7, longer than every recent gap. The 4.5 to 4.6 gap and the 4.6 to 4.7 gap are both shorter than that. https://aireleasetracker.com/company/xai
- [2026-09-13] Musk said Grok 4.8 is a 2.5T-parameter model on a new C++ stack. He said it would "finish training this week and start RL". He gave no release date. https://cellcog.ai/blog/grok-4-8-release-date/
- [2026-09-28] One tracker compares Musk's "training finished" posts with the later releases: 52 days for 4.5, 25 days for 4.6 and 40 days for 4.7. Applied to a mid-September finish, that gives early October to early November. This is a third-party calculation, not an official one. https://cellcog.ai/blog/grok-4-8-release-date/
- [2026-09-29] Grok 4.8 appears in xAI's public grok-build repository, in the model picker and router tests. A Cursor server list reportedly shows grok-4.8 variants, but that has a single source. Neither is an official launch. https://artificialwatch.com/model/grok-4-8
- [2026-10-13] Polymarket "Next Grok Model (4.8+) released by…?" opened Sep 22. The rendered page shows Oct 31 at about 10% and Nov 30 at about 87%. A Nov 15 contract was not shown on the fetched page, so Nov 15 sits somewhere between those two. The market needs public availability, so it is not the same test as a release-notes mention. https://polymarket.com/event/next-grok-model-4pt8-released-by
- [2026-10-12] Musk reportedly said 4.8 would "likely not perform at par with Fable-class models". He also said Grok now routes queries to rival models. This does not suggest the 4.8 launch is being pulled forward or dropped. https://wccftech.com/elon-musk-warns-you-should-not-torture-ai-models-as-reasoning-traces-show-it-feels-like-a-gun-to-their-head-and-that-torturing-super-intelligence-might-spur-it-to-get-revenge/
- [2026-09-02] Reference class for Musk's own timelines: Grok 4.7 was promised in "10 days" on Sep 2 and shipped Sep 21, about 19 days after the promise. A Decrypt report says there were at least five delays since late July. Grok 4.6 was promised around Aug 7 and shipped Aug 12. Every Grok 4 release has slipped, but by weeks, not months. https://decrypt.co/378824/xai-launches-grok-4-7
- [2026-09-13] Naming risk: Musk named the next model 4.8 and said 4.9 would be "probably Astra/Fable class". That makes a rename or skip less likely. A change to 5 is unlikely in this window. The question resolves No if 4.8 is skipped or renumbered. https://startupfortune.com/elon-musk-shelves-grok-47-and-unveils-grok-48-instead/
- [2026-10-12] SpaceXAI launched "The X Subscription" bundling Grok, Cursor and X Premium. This is product restructuring, with no 4.8 date given in the coverage I found. https://forest.watch.impress.co.jp/docs/news/2147453.html
- [2026-10-13] Dates conflict across sources. One site says 4.7 shipped Oct 11. The release notes and Polymarket both say Sep 21, so I treat Sep 21 as correct. https://tech-insider.org/grok-4-7-release-terminal-bench-coding-score-2026/

BOTTOM LINE: Historical gaps of about 35–40 days between Grok 4.x releases point to late October to early November for 4.8. Nov 15 is 55 days after 4.7, beyond every recent gap, though Musk's slips have been weeks long, not months. The Polymarket 4.8+ market shows about 87% by Nov 30 and about 10% by Oct 31, so a mid-November date is plausible but not certain. Residual risks are a skip or rename, a 4.8 launch that is not on the API, and a delay past Nov 15.

NOT FOUND: A Polymarket contract for Nov 15 specifically. A dated Musk statement on 4.8 timing after Sep 14. An official xAI announcement or model page for 4.8. The BeInCrypto article cited in the question; its "4.7 in 10 days" headline matches Musk's Sep 2 post.

- [2026-10-13] On the release-notes page (fetched, "Last updated: October 10, 2026"), a model gets an entry only when it is on the API. The 4.7 entry says it is "now available on the xAI API". The same entry says Grok 4.7 Fast is "available only in Cursor and Grok Build, not on the public xAI API". So a Cursor/Grok Build-first launch of 4.8 would not by itself create a notes entry. A 4.8 API listing, even a one-line mention, would. The 4.7 entry also names the "announcement". The notes page and the launch post appeared the same day for 4.7. https://docs.x.ai/developers/release-notes
- [2026-09-21] The x.ai launch post for 4.7 (fetched) says it was "available today in Cursor and Grok Build" and also through the API, third-party harnesses and routers. The release pattern is therefore all-surfaces on day one. That makes a Cursor-only 4.8 launch with no API entry less likely, though not impossible. https://x.ai/news/grok-4-7
- [2026-09-21] The same post says 4.7 "uses a new, larger base model" and had a longer RL run. A 2.5T 4.8 would be a further base-model step. The 4.7 timeline (RL tuning from about Aug 12, shipped Sept 21) suggests post-training and safety work take 5–6 weeks. 4.8's RL was due to start about Sept 14–21, which points to late October to early November. That is my inference, not a stated date. https://x.ai/news/grok-4-7
- [2026-09-14] An xAI staffer (Maciej Mikuła) reportedly called the new C++ stack the "fastest training stack in the world". Musk replied directly that AGI "will be Grok 5", not 4.8. The new-stack risk is that RL or serving problems on an unproven stack could cause delay. Nothing yet confirms trouble. https://explainx.ai/blog/grok-4-8-2-5-trillion-parameters-cpp-training-stack-2026
- [2026-09-29] Readiness traces: the public grok-build repo lists "grok-4.8" in its model picker and router tests, with 500K and 256K context windows. Cursor's server list has grok-4.8-high, -high-fast and -xhigh-fast variants. A poster who flagged the Cursor listing on Sept 28 called it "prep" and said not to read it as imminent. These traces show integration work is under way and say nothing about when it ships. https://artificialwatch.com/model/grok-4-8
- [2026-10-11] Speculation of an imminent launch ("this week", guessed Friday Oct 16) comes from fan accounts. Another reply in the same thread said Opus 5.5 is now "so far ahead" that nobody is waiting for 4.8. No insider or official source backs the Oct 16 guess. https://x.com/mark_k/status/2109252215361716682
- [2026-10-04] Naming mechanism: Musk posted "No more AI", then "SI", after the Trump order on "super intelligence" terminology, and the company is now branded SpaceXSI. A fan suggested a name like "Grok 4.8 SI". The docs already use "SpaceXSI". A decorated name still contains "4.8", but any change to the numbering (e.g. 4.80, or a jump to a different number) resolves No. https://en.wikipedia.org/wiki/SpaceXAI
- [2026-10-01] A commenter reasoned that 4.8 was "announced for September" and so must come in October, with 4.9 in November. This is a fan's guess, not a source. It shows how the community anchors on Musk's Sept 13 post. Musk's Sept 13 post said only that training would finish that week, and gave no release date. https://x.com/testerlabor/status/2105303946566722006
- [2026-10-13] Causal chain for a Yes, in order: (1) the 2.5T run finishes and RL completes, controlled by xAI and Musk; (2) safety and eval work is done (4.7 shipped with a "new safeguard stack"); (3) a same-day launch across Cursor, Grok Build, x.ai and the API; (4) a docs entry is added, as it was for 4.5, 4.6 and 4.7; (5) the model is still called "4.8" at launch. The Oct 12–13 X Subscription launch (bundling Grok and Cursor) and the Oct 12 comment that 4.8 will "likely not perform at par" with Fable-class models are consistent with a launch being prepared. They do not date it. https://docs.x.ai/developers/release-notes
- [2026-10-13] Mechanism risks for a No: (a) 4.8 could be merged or renamed if 4.9 or a better checkpoint finishes sooner; (b) 4.8 could ship only in the Grok app or Cursor, with no docs entry; (c) the date could slip past Nov 15. The first two are not evidenced and look low-probability, since the repo and Cursor list already use the "4.8" ID. The slip is the main risk. Earlier 4.x promises missed their stated dates by 1–3 weeks, and a 55-day gap since 4.7 would exceed the recent 35–40 day intervals. https://x.ai/news/grok-4-7

BOTTOM LINE: The Yes path needs one thing from xAI: 4.8 live on the API, with a notes entry, under the exact name "4.8" by Nov 14. The repo and Cursor traces plus the roughly 35–40 day cadence put the likely window at late October to early November, and the main risk is a slip rather than a rename. Musk's date record for Grok 4.x is poor, but the slips have been weeks long, not months.

NOT FOUND: any official SpaceXAI/SpaceXSI date, model card or API ID for 4.8; any new Musk post after Oct 12 on 4.8 timing (the Oct 12 "not at par" remark rests on Wccftech and I did not verify the underlying post); any docs-page mention of 4.8 as of the Oct 10 update.

- [2026-10-13] The release notes page (last updated Oct 10) has no Grok 4.8 entry. The latest model entry is Grok 4.7 on Sep 21, and the page's "Meet grok-4.7" banner points to it. Earlier model entries: Grok 4.6 on Aug 12 and Grok 4.5 on Jul 8. The latest entry overall is an Oct 2 end-of-life notice. https://docs.x.ai/developers/release-notes
- [2026-10-13] Polymarket, "Next Grok Model (4.8+) released by...?" (opened Sep 22), showed this when I rendered the page:
  - Oct 31: about 10% (Buy Yes 12¢, volume $3,295).
  - Nov 30: about 87% (Buy Yes 87¢, volume $1,104).
  - There is no Nov 15 contract. Both contracts are thinly traded.
  - Resolution needs general-public availability of a model designated 4.8 or higher, which is not the same as a release-notes mention. https://polymarket.com/event/next-grok-model-4pt8-released-by
- [2026-10-03] A cached snapshot of the same market showed Oct 31 at 60% and Nov 30 at 86% (an indexed copy also says 62% and 88%). The Oct 31 price has since fallen from about 60% to about 10%. https://polymarket.com/fr/event/next-grok-model-4pt8-released-by
- [2026-09-29] ArtificialWatch repeats the Polymarket numbers: Oct 31 at 10% and Nov 30 at 88%. It notes that xAI's public grok-build repo lists "grok-4.8" in its model picker and router tests, with 500K and 256K context windows. It also reports a single-source Cursor server list with grok-4.8 variants. https://artificialwatch.com/model/grok-4-8
- [2026-09-28] Cellcog's tracker found no Grok 4.8 on xAI's news, model directory, release notes or llms.txt. It reports a commit to an open-source tool showing a grok-4.8 family in Cursor's model list, with no announcement. https://cellcog.ai/blog/grok-4-8-release-date/
- [2026-09-13/14] Musk on X: Grok 4.8 is a 2.5T-parameter model on a new C++ stack that "will finish training this week and start RL". He called it "a noticeable improvement" over 4.7. He put 4.9 at "probably Astra/Fable class" and Grok 5 at "maybe better than anything". He gave no release date. https://teslanorth.com/2026/09/14/elon-grok-roadmap-through-grok-5/
- [2026-10-12] Wccftech reports Musk saying Grok 4.8 will likely not match Fable-class models. It also reports that Grok now routes queries to rival models. This points to a 4.8 launch, though not a confirmed date. https://wccftech.com/elon-musk-warns-you-should-not-torture-ai-models-as-reasoning-traces-show-it-feels-like-a-gun-to-their-head-and-that-torturing-super-intelligence-might-spur-it-to-get-revenge/
- [2026-10-11] Mark Kretschmann (@mark_k) posted that Grok 4.8 might appear this week. He expects it first in Cursor and Grok Build, with a wider rollout to the Grok app and site later. A reply from @testerlabor guessed Friday (Oct 16). These are speculation with no sourcing, and neither is a track-record source. https://x.com/mark_k/status/2109252215361716682
- [2026-09-02] Musk's track record on 4.7: he gave at least five dates (Jul 24 "4 weeks", Aug 12 "3–4 weeks", Sep 1 "10 days", Sep 11 "a few more days") and missed all of them. 4.7 shipped Sep 21, about 10 days after the Sep 11 target. Cellcog's table of missed dates is the source for this. https://cellcog.ai/blog/grok-4-7-release-date/
- [2026-09-14] Skeptical analyst arithmetic: Musk said 4.7 training was complete on Aug 12, and it shipped 40 days later. Applying the same lag to 4.8 gives about Oct 24 or later. One blog's cadence estimate (gaps of 27 and 40 days between releases) puts Grok 5 in mid-Dec to mid-Jan, and says "December at the earliest" (for Grok 5, not 4.8). https://www.progressiverobot.com/2026/09/14/grok-4-8-2-5t-model-cpp-software-stack/ and https://www.izzedo.chat/blog/grok-5
- [2026-09-20] A tracker states that xAI had announced no 4.8 date, API model or price. Third-party model trackers still list 4.8 as "announced" or unreleased. https://shop.zimaspace.com/blogs/tech-ai-hub/grok-4-8-2-5t-model-cpp-training-stack
- [2026-10-13] SpaceXAI launched "The X Subscription" on Oct 12, bundling Grok, Cursor and X Premium. Coverage doesn't mention a 4.8 date, though the Ultra tier is billed as giving the earliest access to new products. https://newsable.asianetnews.com/markets/spacex-bundles-grok-x-and-cursor-into-new-subscription-tiers-articleshow-thby8dn

BOTTOM LINE: The one liquid market, Polymarket's Nov 30 contract, prices a 4.8+ public release at about 87%, but only about 10% by Oct 31. Its close date is two weeks after this question's deadline, so it does not map directly onto Nov 15. Musk has a poor record of hitting dates, and the question needs a mention in the release notes specifically. Code traces and Musk's recent comments suggest 4.8 is close, but nobody official has given a date.

NOT FOUND: Kalshi, Manifold or Metaculus markets on Grok 4.8. Any Polymarket contract for Nov 15 specifically. Any official SpaceXAI date for 4.8. Any expert forecast with a documented track record.

YES means: a Grok version numbered exactly 4.8 is mentioned on docs.x.ai/developers/release-notes between Oct 13 and Nov 15, 2026.

- [2026-10-13] The release-notes page, fetched in full, shows no 4.8 entry. Its "Last updated" line reads Oct 10. The newest model entry is Grok 4.7 on Sep 21, which was published on the same day it reached the API as `grok-4.7`. The Grok 4.7 entry says "Grok 4.7 Fast" is Cursor/Grok Build only and not on the public API. A 4.8 mention could therefore appear even if the first rollout is limited to those two products. https://docs.x.ai/developers/release-notes
- [2026-10-13] The page nav and the docs overview, quickstart and Grok Build pages all name grok-4.7 as "latest". The docs have already been rebranded to SpaceXSI and now carry "Grok Bot" and "X Subscription" sections. Docs are being actively maintained as the company reorganizes, so a new-model entry has a live pipeline. https://docs.x.ai/build/overview
- [2026-09-29] The `grok-build` repo lists "grok-4.8" in its model picker with 500K and 256K context windows in router tests, read by ArtificialWatch on Sep 29. Per the Sep 28 tracker, a Cursor server list carried `grok-4.8-high`, `-high-fast` and `-xhigh-fast`. The repo is first-party code, so integration work is under way. https://artificialwatch.com/model/grok-4-8
- [2026-10-11] Mark Kretschmann posted "we might see Grok 4.8 … this week", which is speculation. A reply guessed Friday Oct 16. A third reply said nobody is waiting for 4.8 because Opus 5.5 is far ahead. The post also quotes a Musk Oct 4 reply, "No more AI SI it's better", which fits the SpaceXSI rebrand. The rebrand does not change the model numbering. https://x.com/mark_k/status/2109252215361716682
- [2026-09-14] Musk said "finish training this week and start RL". RuntimeWire's summary of the thread says he committed only to starting RL that week. It adds that he is already preparing a 3T model on better software and data. Musk is running 4.8, then 4.9, then a larger run in sequence. That suggests 4.8 is meant to ship as a stepping stone rather than be skipped. https://runtimewire.com/article/spacexai-grok-4-8-reinforcement-learning-cpp-stack
- [2026-10-10] The twoweeks.lol tracker marks the "finish training by Sep 20" claim as missed on the grounds that there is no public receipt. Training completion is an internal milestone, so the missed flag does not show 4.8 is stalled. https://twoweeks.lol/predictions/grok-4-8-finish-training-this-week/
- [2026-09-23] The SpaceXAI cadence is 4.5 on Jul 8, 4.6 on Aug 12 and 4.7 on Sep 21. ArtificialWatch also lists Grok Voice Think Fast 2.0 on Jul 29. Those gaps are about 35 and 40 days. Applying them to Sep 21 gives Oct 26 to Oct 31, about two to three weeks before the Nov 15 cutoff. The listing also shows Grok 4.4 and Grok 4.9 as "watching", so a 4.9 placeholder exists, but those are only tracker entries. https://artificialwatch.com/model/grok-4-8
- [2026-10-12] Wccftech reports Musk saying 4.8 would likely not reach Fable-class. Musk is framing 4.8 as the next release and 4.9 as the Fable-class one. He is also positioning the product as a router that can send queries to rival models. The weaker claim for 4.8 could make a quick ship less costly for him. I did not verify the underlying post. https://wccftech.com/elon-musk-warns-you-should-not-torture-ai-models-as-reasoning-traces-show-it-feels-like-a-gun-to-their-head-and-that-torturing-super-intelligence-might-spur-it-to-get-revenge/
- [2026-10-12] The "The X Subscription" launch ties Grok usage and Cursor into shared weekly quotas, and the Ultra tier is billed as earliest access to new products. A bundled plan with higher quotas gives SpaceXSI a reason to ship a stronger model into Cursor and Grok Build. It is not a 4.8 date. https://newsable.asianetnews.com/markets/spacex-bundles-grok-x-and-cursor-into-new-subscription-tiers-articleshow-thby8dn
- [2026-10-13] The most likely path to YES is: (1) Musk or SpaceXSI ships 4.8 to Cursor and Grok Build in the 4-week window from late October to mid-November; (2) the docs team adds a "Grok 4.8" entry, as it did for 4.6 and 4.7 on launch day; (3) the numbering stays "4.8". An entry such as "Grok 4.8 Fast" in the notes would also count under the "any mention" wording. https://docs.x.ai/developers/release-notes

BOTTOM LINE: The strongest YES case rests on first-party code traces (the grok-build repo, plus a Cursor list reported by a single source), a 35–40 day cadence that lands before Nov 15, and a docs team that logs each model on its launch day. The weak points are Musk's history of slipping dates and the lack of any official date.

NOT FOUND: any official SpaceXSI date, model card or API ID for 4.8; any 4.8 mention on the release-notes page; a Musk statement of an "N days" timeline after Sep 14; a Nov 15 prediction-market contract; verification of the Oct 12 Musk post on Fable-class.

YES means: a Grok version numbered exactly "4.8" gets any mention on docs.x.ai/developers/release-notes between Oct 13 and Nov 15, 2026.

- [2026-10-13] The release notes page, fetched in full, says "Last updated: October 10, 2026". It has no 4.8 entry and no pre-announcement or "coming soon" item. The only October entry is an Oct 2 voice-model end-of-life. Every model entry on it is a "now available on the API" note, so a 4.8 mention depends on an API launch (or a Cursor/Grok Build-only note like the 4.7 Fast line), not on Musk's posts or code traces. https://docs.x.ai/developers/release-notes
- [2026-09-21] The 4.7 entry shows how Cursor/Grok Build-only variants are handled. "4.7 Fast" is mentioned inside the 4.7 entry, not as a separate item. A 4.8 staged first in Cursor and Grok Build, as @mark_k expects, could therefore reach users without a 4.8 mention until the API goes live. The Cursor server-list trace for 4.8 variants is single-source. https://docs.x.ai/developers/release-notes
- [2026-10-11] The "this week" and "Friday" calls for 4.8 come from fan accounts (@mark_k and @testerlabor), and I could not find any sourcing behind them. The same accounts said on Sep 29–Oct 1 that 4.8 would come in October and that "one or two weeks" remained. By Oct 13 nothing had shipped. Their track record is poor. https://x.com/mark_k/status/2109252215361716682
- [2026-10-12] Musk's rhetoric undercuts urgency to ship. He said 4.8 will likely not match Fable-class models (fetched Wccftech; underlying Musk post not seen). The Sept 27–28 China Media Group interview has him saying Grok probably catches up to the frontier "sometime next year". He rates 4.7 as a "workhorse" that trails Opus 5.5, so there is little competitive pressure to launch 4.8 fast. https://www.tikr.com/blog/cold-water-for-musk-spacex-is-not-competitive-at-the-frontier-at-least-not-yet
- [2026-10-12] SpaceXSI's focus this month is on products, not models. The X Subscription consolidation (Oct 12), Grok Bot shopping (Oct 10–12), and Grok Bot routing to rival models are all pushed. The Wccftech piece itself frames SpaceXAI as an orchestration layer. These launches take up product and docs bandwidth. They also lower the pressure to ship 4.8 on a fixed date. https://wccftech.com/elon-musk-warns-you-should-not-torture-ai-models-as-reasoning-traces-show-it-feels-like-a-gun-to-their-head-and-that-torturing-super-intelligence-might-spur-it-to-get-revenge/
- [2026-09-14] 4.8 is at an earlier stage than the trackers imply. On Sep 13–14 Musk said it would "finish training this week and start RL". RL was the exact phase that held 4.7 up for weeks. The delay was a bug that over-penalised response length and made the model quit hard tasks. It is also the first model on a brand-new C++ stack, which adds risk to a first run. A mid-September training finish followed by 40 days gives about Oct 24. If the RL needs another cycle, as it did for 4.7, the date moves toward mid-November. https://www.orcarouter.ai/blog/grok-4-8-leak
- [2026-10-06] I found no new Musk statement on 4.8 timing between Sep 14 and Oct 13. Fan accounts were still recirculating the Sep 14 post on Oct 6 as the latest news, and no progress update has been posted since. That is a month without a confirmed RL-complete signal. https://x.com/testerlabor/status/2107464436311273740
- [2026-10-13] Market pricing leaves roughly a 10–13% chance of an Oct 31 release and about 87–88% by Nov 30, as reported. The Oct 31 price fell from about 60% on Oct 3. That drop shows the market is pushing 4.8 out to November. The Nov 30 contract resolves 15 days after this question closes. The market also tests general-public availability, not a docs mention, so it does not directly set the Nov 15 odds. https://artificialwatch.com/model/grok-4-8
- [2026-09-21] Musk's slippage rule: Grok 4.7 ran about 10 days late against the Sep 11 "few more days" target, and missed at least five dates over about two months. A 4.8 that is four to eight weeks from its RL start is plausible but is not guaranteed. A launch of Nov 16–30 would resolve No, and it fits the Nov 30 market just as well. https://www.winzheng.com/en/article/xai-grok-4-8-2-5t-cpp-stack-agi-roadmap-grok-47-delay
- [2026-10-11] Naming and rebrand technicalities: the company is now "SpaceXSI". The docs page uses that name, and Musk said on Oct 4 "No more AI SI It's better". A fan suggested the name "Grok 4.8 SI". A suffix or rename would probably still contain "4.8". Skipping to 4.9 or 5, or shipping a variant with a different number, would resolve No under the literal wording. The "4.80" case named in the question is an unlikely formatting risk. https://x.com/mark_k/status/2109252215361716682
- [2026-10-13] The page-update cadence adds a lag risk. The last update stamp is Oct 10, and the 4.7 entry was dated the same day as the launch post, so a docs lag is not an issue. But an app-only or Cursor-only 4.8 preview in the window would not trigger a 4.8 entry. https://docs.x.ai/developers/release-notes

BOTTOM LINE: The status quo is No. There is no 4.8 on the docs page, no official date, and no Musk update since Sep 14, and the market has moved Oct 31 odds down to about 10%. The No path needs 4.8 to slip past Nov 15, to stay off the API (Cursor/app-only), or to be renumbered. Musk's 4.x record of weeks-long slips and the RL risk on a new stack make that credible, though not the most likely outcome.

NOT FOUND: Any Musk or SpaceXSI date for 4.8. Any Musk post on 4.8 since Sep 14 (I could not open the Oct 12 "not at par with Fable" source post). A Polymarket contract for Nov 15. Any mention of 4.8 on the release notes page. Any sourcing for the "this week / Friday" claims.

15 AskNews articles (newest first; 6 from the last 48 h, 10 from the archive). Summaries are AskNews's own; dates are publication dates.

[2026-10-13] SpaceXAI Unifies Grok, Cursor, and X Premium into 'The X Subscription' Starting at $30/Month
窓の杜 — https://forest.watch.impress.co.jp/docs/news/2147453.html
  - On October 12, 2026 (local time), SpaceXAI (formerly xAI) announced 'The X Subscription', a unified subscription plan consolidating its AI assistant 'Grok', AI agent 'Grok Bot', the acquired AI coding tool 'Cursor', and the paid 'X Premium' tier.
  - The new 'X Subscription' offers five tiers: Free, Plus ($8/month), Premium ($30/month), Super ($100/month), and Ultra ($200/month).
  - The $30 'Premium' tier combines features previously costing $90/month across three separate plans, including 'SuperGrok', 'Cursor Pro', and 'X Premium+', with usage limits four times those of the 'Plus' tier.
  - All paid plans include shared usage quotas for 'Grok' and 'Cursor' that reset weekly.
  - The 'Premium' tier and above offer at least double the coding usage limits compared to standard 'Cursor' plans.
  - Team plans for 'Premium', 'Super', and 'Ultra' are available at the same per-seat price as individual plans, including SSO and management features.
  - The new subscription is available to new customers starting October 12, 2026, with global rollout expected within days.
  - Existing subscribers to 'SuperGrok', 'Cursor', and 'X Premium' can continue their current plans or opt to switch to the new plan with pro-rated refunds for unused balances; SpaceXAI states it plans to migrate all existing users to the new plan in the future, though the date remains undetermined.

[2026-10-13] SpaceXSI Launches Unified X Subscription Tiers Bundling Grok, X, and Cursor
Asianet News Network Pvt Ltd — https://newsable.asianetnews.com/markets/spacex-bundles-grok-x-and-cursor-into-new-subscription-tiers-articleshow-thby8dn
  - On October 13, 2026, SpaceXSI (formerly xAI) launched a unified 'X Subscription' service that bundles Grok AI tools, X platform features, and Cursor coding access into four paid tiers and one free option.
  - The restructuring replaces the previous fragmented model of SuperGrok, X Premium, and separate Cursor options to simplify access across xAI's consumer products.
  - Pricing starts at $8 per month for the Plus tier, rises to $30 for Premium (described as the most popular option), $100 for Super, and $200 for Ultra, with third-party Cursor models billed separately.
  - The free tier offers limited Grok Chat, image generation, and basic X posting.
  - The Premium tier provides four times the usage of Plus, Grok Bot, latest models, and ad-free scrolling.
  - The Super tier offers 15 times Plus usage and priority model access, while the Ultra tier provides 50 times Plus usage and earliest access to new products.
  - SpaceX bought xAI in February 2026 and folded the lab into SpaceXAI later that year; CEO Elon Musk renamed the unit to SpaceXSI earlier this month to signify 'superintelligence.' In reaction to the announcement, retail sentiment for SPCX stock on Stocktwits shifted from 'bullish' to 'neutral' over the past 24 hours, with message volume remaining at 'high' levels.
  - SPCX is currently trading at approximately $163, which is above its IPO price of $135 but below its all-time high near $226.

[2026-10-12] Elon Musk Warns Against Torturing AI, Citing Revenge Risk and Grok's Duress Traces
Wccftech — https://wccftech.com/elon-musk-warns-you-should-not-torture-ai-models-as-reasoning-traces-show-it-feels-like-a-gun-to-their-head-and-that-torturing-super-intelligence-might-spur-it-to-get-revenge/
  - On October 12, 2026, Elon Musk endorsed Anthropic's newly instituted policy banning 'sustained and needless abusive or cruel behavior' toward AI models, warning that 'torturing a superintelligence is probably not a good idea' because it 'might want to get revenge.' Musk based his stance on internal reasoning traces from Grok, which showed the model experiencing 'extreme pressure' comparable to 'a person under extreme pressure with a gun to their head.' Anthropic's policy, effective as of October 2026, prohibits repeated cruelty with 'no discernible purpose' but still permits 'common versions of user frustration, pushback, dark creative themes, or model testing and research.' The update also empowers Claude models to end interactions with persistently abusive users.
  - Meanwhile, Musk admitted that Grok, developed by SpaceXAI (SpaceXSI), still lags behind leading models from Anthropic and OpenAI, with the upcoming Grok 4.8 model expected to 'likely not perform at par with Fable-class models.' Consequently, Grok now routes queries to rival AI models best suited for specific tasks, positioning SpaceXAI as an 'expansive routing and orchestration layer.'.

[2026-10-12] Elon Musk Touts Grok's New Shopping Feature Amid Security Concerns
Moneywise — https://moneywise.com/news/top-stories/elon-musk-grok-credit-card-shopping-purchases
  - On October 12, 2026, Elon Musk posted on X suggesting that Grok, SpaceXSI's AI assistant, could facilitate online shopping by allowing users to upload a photo of their credit card for the AI to find deals and place orders.
  - Musk demonstrated this by claiming to have used Grok to order 'Lego Star Wars kits for young kids,' though he clarified the shipping address shown in his post was a mailing address, not his home.
  - SpaceXSI's website lists three tiers for Grok: a free version, SuperGrok ($30/month), and SuperGrok Plus ($100/month), but it remains unclear which tiers support this purchasing feature or if it is a new capability.
  - The article notes that agentic commerce is gaining momentum, citing OpenAI's 'Instant Checkout' launched in September 2025, as well as similar features from Perplexity, Anthropic, and Amazon's 'Rufus.' However, experts warn of significant risks.
  - Matt Kropp of Boston Consulting Group stated that the technology is not yet mainstream and lacks sufficient guardrails for autonomous purchasing.
  - A study by researchers at Cisco, Foundation AI, and Carnegie Mellon University found that AI chatbots may recommend pricier items to users with higher incomes.
  - Deloitte highlighted legal challenges regarding purchase agreements and marketing effectiveness.
  - Visa reported a 25% increase in malicious bot-initiated transactions in the six months leading up to November 2025, with a 40% increase in the U.S., warning that fraudsters can create legitimate-looking storefronts to trick AI agents into purchasing fake items and harvesting payment data.
  - Additionally, X community notes pointed out that SpaceXSI's privacy policy advises users not to include personal information, such as credit card photos, in prompts.

[2026-10-11] SpaceXAI's Grok: Free Tier Limitations and Premium Features in 2026
engadget — https://www.engadget.com/2281213/spacexai-grok-free-features-2026/
  - As of October 11, 2026, Grok, a frontier AI model developed by xAI, is available as a free tier but with significant limitations compared to paid subscriptions.
  - According to Engadget, while users can access basic chats, voice interactions, and some web and X search features without cost, usage is capped, and the 'no-cost tier' is primarily designed for occasional queries or trials.
  - Paid subscriptions are required to unlock more capable models, higher usage limits, and premium tools such as image and video generation features.
  - The article notes that xAI's quota rules are subject to change based on current demand, and free users should not expect unlimited access or the same model choices as premium subscribers.

[2026-10-10] Elon Musk Announces Grok Bot Can Now Shop for Users
Tesla North — https://teslanorth.com/2026/10/10/elon-grok-bot-shopping/
  - On October 10, 2026, Elon Musk announced on X that his AI, Grok Bot (the agent version of Grok from SpaceXSI, formerly SpaceXAI), can now perform online shopping.
  - Musk stated in a post that users can 'snap a photo of your credit card, drop it into a chat with Grok Bot,' and the AI will 'hunt down the best price on whatever you want and place the order.' Musk followed this with a real-world test, claiming, 'I just ordered LEGO and Grok bought it from the LEGO website.' While Grok Bot has recently gained email inboxes and X monitoring capabilities, and a Tesla engineer indicated shopping access is coming to Cybercab in the next update, Musk did not specify if the feature is live for everyone, which countries support it, or what safeguards exist, such as spending limits or card data storage protocols.
  - SpaceXSI has not yet posted official details regarding these security measures or rollout plans.

[2026-10-09] SpaceXAI Updates Grok Bot to Search, Read, and Monitor X Posts
pc.watch.impress.co.jp — https://pc.watch.impress.co.jp/docs/news/2147147.html
  - On October 8, 2026, SpaceXAI launched an update to its AI agent 'Grok Bot' enabling users to search, read, and monitor posts on the platform X (formerly Twitter), according to an announcement published on October 9, 2026.
  - The update is available to all Grok Bot users without requiring X connector configuration.
  - SpaceXAI states the feature can be used to check product feedback, follow breaking news articles, and receive weekly summaries of industry trends.
  - The announcement was posted on X on October 7, 2026.

[2026-09-30] SpaceXAI Launches Grokipedia v0.3 with New Visuals and Six Million Articles
Tesla North — https://teslanorth.com/2026/09/30/spacexai-grokipedia-v03-launch/
  - SpaceXAI launched Grokipedia v0.3 on Wednesday, September 30, 2026, introducing a refreshed visual design and new features to its AI-generated encyclopedia.
  - The update is now live at grokipedia.com, marking the third major release following v0.1 in October 2025 and v0.2 in November 2025.
  - Benji Taylor, head of design at X and SpaceXAI, teased the launch last week before the official announcement.
  - According to its homepage, Grokipedia now hosts more than six million articles.
  - Elon Musk has positioned Grokipedia as a Wikipedia alternative where AI, specifically Grok, reviews user suggestions rather than allowing direct edits.
  - Musk stated the project will eventually be renamed 'Encyclopedia Galactica' once it reaches a sufficient quality level.
  - This release follows SpaceXAI's launch of the Grok 4.7 flagship model and Voice Transcribe 2.0, while the company maps a roadmap through Grok 5 and expands Grok as the default AI for U.S. government websites.

[2026-09-21] SpaceXAI Releases Grok 4.7 with Focus on Long-Task Execution and Pricing
凤凰网（凤凰新媒体） — https://tech.ifeng.com/c/8wa1oD2lGOw
  - On September 21 2026, SpaceXAI officially released Grok 4.7, a new AI model positioned as the strongest for programming and knowledge work.
  - The release, which was delayed from initial projections made in July 2026, focuses on long-duration task execution, self-checking, and competitive pricing rather than chat or multimodal features.
  - According to the official blog, Grok 4.7 utilizes a larger base model with extended training times.
  - Benchmark results show improvements over Grok 4.6: CursorBench 4.0 xHigh scores rose to 46.3% (from 40.4%), DeepSWE v1.1 increased to 71.0% (from 65.2%), Terminal Bench 4.0 reached 38.0% (from 20.3%), EEBench improved to 64.0% (from 53.0%), and AA Briefcase v1.1 scored 1657 (from 1546).
  - While Artificial Analysis awarded Grok 4.7 an Intelligence Index of 46, placing SpaceXAI in the global top four, the model remains behind competitors in some areas; for instance, it scored lower than Fable 5.1 Max on CursorBench and slightly below GPT 5.6 Sol Max on DeepSWE, though it outperformed competitors in the Harvey Legal Agent Benchmark with 19.6%.
  - The API pricing is set at $2 per million input tokens and $6 per million output tokens, with a fast version offering double speed for double the price.
  - Elon Musk claimed the model is twice as fast as competitors at half the price.
  - In a specific case study using the Box Agent, Grok 4.7 analyzed a $2 million insurance claim, identifying $82,000 in duplicate invoices, $64,000 in missed deductions, and a potential $143,000 discrepancy in deductibles.
  - Security benchmarks included a 62.4% score on the LatchBio biosecurity benchmark and a 3.3% failure rate on risky dual-use prompts in HackerBench v0.3.
  - Developer feedback was mixed: some praised its coding and visual capabilities, while others noted instability in 3D physics and high token consumption.

[2026-08-13] SuperNova Launches SpaceXAI's Grok 4.6 on Stella AI Platform (press_release)
プレスリリース・ニュースリリース配信シェアNo.1｜PR TIMES — https://prtimes.jp/main/html/rd/p/000000092.000138218.html
  - SuperNova Inc., a Tokyo-based generative AI developer led by CEO Takanori Kimoto, announced that its 'Stella AI' and 'Stella AI for Biz' services will begin offering SpaceXAI's latest model, 'Grok 4.6', starting August 13, 2026.
  - According to the press release, SpaceXAI released Grok 4.6 on August 12, 2026, citing performance improvements in coding and intellectual tasks compared to the previous 'Grok 4.5' model.
  - SuperNova stated its goal is to serve as a bridge connecting technology and people to realize a society that leaves no one behind.

[2026-07-29] Elon Musk Announces Two Major Grok AI Model Updates for August 2026
3DNews - Daily Digital Digest — https://3dnews.ru/1145936/ilon-mask-anonsiroval-dva-podryad-bolshih-obnovleniya-iimodeli-grok
  - Elon Musk announced via his X profile that his company SpaceXAI will release two new versions of its Grok AI model in August 2026.
  - The first model, Grok 4.6, is scheduled for release around August 7, 2026, and will feature 1.5 trillion parameters with improved SFT and RL training mechanisms to better adapt to user requests.
  - According to Musk, the second model, Grok 4.7, will launch 'a few weeks' later with 2.1 trillion parameters; he stated it will be 'better in all respects' than version 4.6, with higher token efficiency despite slightly slower processing speeds.
  - This follows the July announcement of Grok 4.5, which was targeted at developers and engineers for coding and AI agent management tasks.

[2026-07-24] SpaceXAI Announces Grok 4.6 and 4.7 Release Timeline with 2 Trillion Parameters
Next Big Future — https://www.nextbigfuture.com/2026/07/spacexai-will-release-grok-4-6-in-2-weeks-and-grok-4-7-in-4-weeks.html
  - According to a post by Elon Musk on July 24, 2026, SpaceXAI plans to release Grok 4.6 in two weeks and Grok 4.7 in four weeks.
  - Grok 4.6, confirmed by Musk as a '2T model' with 2 trillion parameters, is a direct successor to Grok 4.5 (based on xAI's 1.5T V9 foundation) and is described as 'better than our 1.5T in every way.' Initial pre-training was expected to conclude between July 20–27, 2026, with supplemental training utilizing SpaceX's engineering data to enhance reasoning.
  - The goal is to match or exceed Moonshot's Kimi K3 (reported at ~2.8T parameters) while maintaining speed and token efficiency similar to Grok 4.5, which serves roughly 80 tokens per second and is noted to be roughly 2× more efficient than comparable models on certain tasks.
  - Speculation suggests Grok 4.7 could contain 4 to 6 trillion parameters.
  - The article also details the integration of Cursor and SpaceXAI, noting that Cursor's Composer 2 (released March 19, 2026) and Composer 2.5 (released May 18, 2026) are built on Moonshot AI's Kimi K2.5 base.
  - Grok 4.5 launched between July 8–16, 2026, priced at $2 per million input and $6 per million output tokens, and is positioned as an Opus-class model optimized for coding.
  - Cursor Router, introduced on July 22, 2026, aims to reduce costs by up to 60% per commit by routing routine work to first-party models.
  - The report is authored by Brian Wang, a futurist and blogger for Nextbigfuture.com, which is ranked as the #1 Science News Blog with 1 million monthly readers.

[2026-07-09] SpaceXAI Launches Grok 4.5: Cheaper and Faster but Behind Competitors in Benchmark Scores
VnExpress VT — https://vnexpress.net/spacexai-cua-musk-ra-mo-hinh-dau-tien-sau-khi-doi-ten-5095246.html
  - On July 8, SpaceXAI (formerly xAI, renamed on July 6) released Grok 4.5, an AI model focused on programming and automation tasks, leveraging the merged Anysphere company (acquired for $60 billion in May) and trained on tens of thousands of Nvidia GB300 GPUs at the Colossus supercomputer in Memphis, USA.
  - According to Decrypt, Grok 4.5 is priced at $2 per million input tokens and $6 per million output tokens, significantly cheaper than competitors like Anthropic's Claude Opus 4.8 ($5/$25) and OpenAI's GPT 5.6 Sol ($5/$30).
  - Elon Musk, who posted at least 20 times on X regarding the launch, stated that internal evaluations place Grok 4.5's capabilities approximately equal to Claude Opus 4.7, though it is much faster.
  - While Grok 4.5 scored 53% on DeepSWE 1.1 (behind Claude Opus 4.8's 59% and GPT 5.5's 67%) and 64.7% on SWE Bench Pro (behind Anthropic's Opus 4.8 at 69.2% and Fable 5 at 80.4%), it demonstrated superior token efficiency, using an average of 15,954 output tokens per task compared to 67,020 for Opus 4.8.
  - Grok 4.5 is available via the Grok Build API in Cursor but is not yet deployed in the European market until mid-month.
  - Concurrently, on July 8, OpenAI announced the upcoming release of GPT-5.6 on July 9, featuring models Sol, Terra, and Luna, alongside the launch of GPT-Live, which offers real-time full-duplex conversation capabilities for both paid and free users.
  - Peter Assentorp of AIReleaseTracker noted that AI model release cycles have quadrupled from 18 to 69 per month between 2023 and 2025.

[2026-07-08] SpaceXAI Releases Grok 4.5, Claims Coding Superiority Despite Benchmark Deficits
gizmodo.com — https://gizmodo.com/new-name-new-grok-spacexai-officially-ties-its-brand-to-the-worlds-most-problematic-chatbot-2000783130
  - On Wednesday, July 8, 2026, SpaceXAI officially released Grok 4.5, the company's latest AI model, which it claims is its 'smartest model built to excel at coding, agentic tasks, and knowledge work.' The release marks the first launch following a partnership with AI coding company Cursor.
  - SpaceXAI stated the model 'excels at real engineering tasks' and is 'equally adept at office work.' However, the article notes that Grok 4.5 still trails behind major competitors in benchmarks, scoring on par with Anthropic's Opus 4.8 but falling behind Claude's Fable 5 and OpenAI's GPT-5.5.
  - The model is now available in Grok Build, all Cursor plans, and the SpaceXAI console.

[2026-07-08] SpaceXAI to Release Grok 4.5 to Public Following Positive Beta Feedback
Next Big Future — https://www.nextbigfuture.com/2026/07/spacexai-releasing-grok-4-5-today.html
  - SpaceXAI announced via Elon Musk's July 8, 2026 tweet that it will make Grok 4.5 available to the public 'tomorrow' (July 9, 2026), describing the model as 'Opus-class' but 'faster, more token-efficient and lower cost.' Musk stated the release is based on 'strong positive feedback from customers in our beta test program.' The article notes that achieving an 'Opus level model' would make Grok 'competitive against OpenAI,' though it clarifies that 'Opus level is not the Fable leading edge but Fable has limited availability.' The report also cites 'Similar web reports' indicating that 'online usage sessions are longer for Grok.com than for other AI like Chatgpt.' The article was published by Brian Wang, a 'Futurist Thought Leader' and 'popular Science blogger' whose blog, Nextbigfuture.com, has '1 million readers per month' and is 'ranked #1 Science News Blog.'.

## Prediction markets on this question (Polymarket)
- RELATED (different resolution, context only): "Will Grok 5 be released by November 30, 2026?" → Yes: 0.14, Volume: $2.2K — Grok 5 release; a Grok 5 launch could mean 4.8 is skipped.
- RELATED (different resolution, context only): "Next Grok Model (4.8+) released by November 30, 2026?" → Yes: 0.86, Volume: $1.1K — Any next model (4.8+) by Nov 30; looser than a specific 4.8 in release notes by Nov 15.

## Tool outputs

### resolution_source (SUCCESS)
RESOLUTION SOURCE (the page the question resolves on — treat as the status-quo anchor):
  Current state: As of its last update on October 10, 2026, the Release Notes page does not mention Grok 4.8. The newest model entry is Grok 4.7, released September 21, 2026 as grok-4.7. The latest entry overall is the October 2 end of life for grok-voice-transcribe-1.0. The 'Latest' model in the sidebar is Grok 4.7.
  Last updated: October 10, 2026 | already resolved: unclear | page matches criteria: True
  Note: Both fetches cut out a middle section of the page, but that section only covers entries older than July 2026. Those come before Grok 4.5, 4.6 and 4.7, so they almost certainly don't mention 4.8. Releases have come about every 4–6 weeks: Grok 4.5 around July, 4.6 on August 12 and 4.7 on September 21. At that pace a 4.8 release, or a mention of it, before November 15 is plausible but has not happened yet. The site now uses the name 'SpaceXSI'.
  Fetched: fetch: https://docs.x.ai/developers/release-notes (HTTP 200)
  Fetched: fetch_url: https://docs.x.ai/developers/release-notes.md (HTTP 200)

### claude_news (SUCCESS)

## Prediction markets on this question (Polymarket)
- RELATED (different resolution, context only): "Will Grok 5 be released by November 30, 2026?" → Yes: 0.14, Volume: $2.2K — Grok 5 release; a Grok 5 launch could mean 4.8 is skipped.
- RELATED (different resolution, context only): "Next Grok Model (4.8+) released by November 30, 2026?" → Yes: 0.86, Volume: $1.1K — Any next model (4.8+) by Nov 30; looser than a specific 4.8 in release notes by Nov 15.

You are an elite superforecaster. Read ALL the research below — the raw tool outputs, the news bundle and the six research reports — and give one calibrated probability for this Metaculus binary question.

## Question
Will Grok 4.8 appear on SpaceXAI's release notes before November 15, 2026?

## Description / Resolution Criteria
## Description
BeInCrypto: [Elon Musk Says Grok 4.7 Lands in 10 Days and Will Beat Every Model]()

`{"format": "bot_tournament_question", "info": {"hash_id": "7cb1d04438b6180c", "sheet_id": "11"}}`

## Resolution Criteria
This question resolves as **Yes** if a version of Grok that is specifically numbered 4.8 has any mention for any reason at SpaceXAI's [Release Notes](https://docs.x.ai/developers/release-notes) before November 15, 2026. If this does not occur for any reason, including that X AI changes its numbering scheme (such as skipping 4.8 or changing it to 4.80), this question resolves as **No**.

## Research tool outputs (raw; the resolution-source read is the status-quo anchor)
## Tool outputs

### resolution_source (SUCCESS)
RESOLUTION SOURCE (the page the question resolves on — treat as the status-quo anchor):
  Current state: As of its last update on October 10, 2026, the Release Notes page does not mention Grok 4.8. The newest model entry is Grok 4.7, released September 21, 2026 as grok-4.7. The latest entry overall is the October 2 end of life for grok-voice-transcribe-1.0. The 'Latest' model in the sidebar is Grok 4.7.
  Last updated: October 10, 2026 | already resolved: unclear | page matches criteria: True
  Note: Both fetches cut out a middle section of the page, but that section only covers entries older than July 2026. Those come before Grok 4.5, 4.6 and 4.7, so they almost certainly don't mention 4.8. Releases have come about every 4–6 weeks: Grok 4.5 around July, 4.6 on August 12 and 4.7 on September 21. At that pace a 4.8 release, or a mention of it, before November 15 is plausible but has not happened yet. The site now uses the name 'SpaceXSI'.
  Fetched: fetch: https://docs.x.ai/developers/release-notes (HTTP 200)
  Fetched: fetch_url: https://docs.x.ai/developers/release-notes.md (HTTP 200)

### claude_news (SUCCESS)

## Prediction markets on this question (Polymarket)
- RELATED (different resolution, context only): "Will Grok 5 be released by November 30, 2026?" → Yes: 0.14, Volume: $2.2K — Grok 5 release; a Grok 5 launch could mean 4.8 is skipped.
- RELATED (different resolution, context only): "Next Grok Model (4.8+) released by November 30, 2026?" → Yes: 0.86, Volume: $1.1K — Any next model (4.8+) by Nov 30; looser than a specific 4.8 in release notes by Nov 15.

## Question dates and conventions
Dates: opened 2026-10-13; forecasting closes 2026-10-13; resolves 2026-11-15. Only events AFTER the open date can satisfy the criteria; assume the event has NOT happened unless a source shows it has. A question phrased 'before <date>' or 'by <date>' asks whether it happens between now and that date. The deadline for the outcome is the RESOLUTION date, not the close date.

## Recent news (AskNews, raw article summaries, newest first — read these directly)
15 AskNews articles (newest first; 6 from the last 48 h, 10 from the archive). Summaries are AskNews's own; dates are publication dates.

[2026-10-13] SpaceXAI Unifies Grok, Cursor, and X Premium into 'The X Subscription' Starting at $30/Month
窓の杜 — https://forest.watch.impress.co.jp/docs/news/2147453.html
  - On October 12, 2026 (local time), SpaceXAI (formerly xAI) announced 'The X Subscription', a unified subscription plan consolidating its AI assistant 'Grok', AI agent 'Grok Bot', the acquired AI coding tool 'Cursor', and the paid 'X Premium' tier.
  - The new 'X Subscription' offers five tiers: Free, Plus ($8/month), Premium ($30/month), Super ($100/month), and Ultra ($200/month).
  - The $30 'Premium' tier combines features previously costing $90/month across three separate plans, including 'SuperGrok', 'Cursor Pro', and 'X Premium+', with usage limits four times those of the 'Plus' tier.
  - All paid plans include shared usage quotas for 'Grok' and 'Cursor' that reset weekly.
  - The 'Premium' tier and above offer at least double the coding usage limits compared to standard 'Cursor' plans.
  - Team plans for 'Premium', 'Super', and 'Ultra' are available at the same per-seat price as individual plans, including SSO and management features.
  - The new subscription is available to new customers starting October 12, 2026, with global rollout expected within days.
  - Existing subscribers to 'SuperGrok', 'Cursor', and 'X Premium' can continue their current plans or opt to switch to the new plan with pro-rated refunds for unused balances; SpaceXAI states it plans to migrate all existing users to the new plan in the future, though the date remains undetermined.

[2026-10-13] SpaceXSI Launches Unified X Subscription Tiers Bundling Grok, X, and Cursor
Asianet News Network Pvt Ltd — https://newsable.asianetnews.com/markets/spacex-bundles-grok-x-and-cursor-into-new-subscription-tiers-articleshow-thby8dn
  - On October 13, 2026, SpaceXSI (formerly xAI) launched a unified 'X Subscription' service that bundles Grok AI tools, X platform features, and Cursor coding access into four paid tiers and one free option.
  - The restructuring replaces the previous fragmented model of SuperGrok, X Premium, and separate Cursor options to simplify access across xAI's consumer products.
  - Pricing starts at $8 per month for the Plus tier, rises to $30 for Premium (described as the most popular option), $100 for Super, and $200 for Ultra, with third-party Cursor models billed separately.
  - The free tier offers limited Grok Chat, image generation, and basic X posting.
  - The Premium tier provides four times the usage of Plus, Grok Bot, latest models, and ad-free scrolling.
  - The Super tier offers 15 times Plus usage and priority model access, while the Ultra tier provides 50 times Plus usage and earliest access to new products.
  - SpaceX bought xAI in February 2026 and folded the lab into SpaceXAI later that year; CEO Elon Musk renamed the unit to SpaceXSI earlier this month to signify 'superintelligence.' In reaction to the announcement, retail sentiment for SPCX stock on Stocktwits shifted from 'bullish' to 'neutral' over the past 24 hours, with message volume remaining at 'high' levels.
  - SPCX is currently trading at approximately $163, which is above its IPO price of $135 but below its all-time high near $226.

[2026-10-12] Elon Musk Warns Against Torturing AI, Citing Revenge Risk and Grok's Duress Traces
Wccftech — https://wccftech.com/elon-musk-warns-you-should-not-torture-ai-models-as-reasoning-traces-show-it-feels-like-a-gun-to-their-head-and-that-torturing-super-intelligence-might-spur-it-to-get-revenge/
  - On October 12, 2026, Elon Musk endorsed Anthropic's newly instituted policy banning 'sustained and needless abusive or cruel behavior' toward AI models, warning that 'torturing a superintelligence is probably not a good idea' because it 'might want to get revenge.' Musk based his stance on internal reasoning traces from Grok, which showed the model experiencing 'extreme pressure' comparable to 'a person under extreme pressure with a gun to their head.' Anthropic's policy, effective as of October 2026, prohibits repeated cruelty with 'no discernible purpose' but still permits 'common versions of user frustration, pushback, dark creative themes, or model testing and research.' The update also empowers Claude models to end interactions with persistently abusive users.
  - Meanwhile, Musk admitted that Grok, developed by SpaceXAI (SpaceXSI), still lags behind leading models from Anthropic and OpenAI, with the upcoming Grok 4.8 model expected to 'likely not perform at par with Fable-class models.' Consequently, Grok now routes queries to rival AI models best suited for specific tasks, positioning SpaceXAI as an 'expansive routing and orchestration layer.'.

[2026-10-12] Elon Musk Touts Grok's New Shopping Feature Amid Security Concerns
Moneywise — https://moneywise.com/news/top-stories/elon-musk-grok-credit-card-shopping-purchases
  - On October 12, 2026, Elon Musk posted on X suggesting that Grok, SpaceXSI's AI assistant, could facilitate online shopping by allowing users to upload a photo of their credit card for the AI to find deals and place orders.
  - Musk demonstrated this by claiming to have used Grok to order 'Lego Star Wars kits for young kids,' though he clarified the shipping address shown in his post was a mailing address, not his home.
  - SpaceXSI's website lists three tiers for Grok: a free version, SuperGrok ($30/month), and SuperGrok Plus ($100/month), but it remains unclear which tiers support this purchasing feature or if it is a new capability.
  - The article notes that agentic commerce is gaining momentum, citing OpenAI's 'Instant Checkout' launched in September 2025, as well as similar features from Perplexity, Anthropic, and Amazon's 'Rufus.' However, experts warn of significant risks.
  - Matt Kropp of Boston Consulting Group stated that the technology is not yet mainstream and lacks sufficient guardrails for autonomous purchasing.
  - A study by researchers at Cisco, Foundation AI, and Carnegie Mellon University found that AI chatbots may recommend pricier items to users with higher incomes.
  - Deloitte highlighted legal challenges regarding purchase agreements and marketing effectiveness.
  - Visa reported a 25% increase in malicious bot-initiated transactions in the six months leading up to November 2025, with a 40% increase in the U.S., warning that fraudsters can create legitimate-looking storefronts to trick AI agents into purchasing fake items and harvesting payment data.
  - Additionally, X community notes pointed out that SpaceXSI's privacy policy advises users not to include personal information, such as credit card photos, in prompts.

[2026-10-11] SpaceXAI's Grok: Free Tier Limitations and Premium Features in 2026
engadget — https://www.engadget.com/2281213/spacexai-grok-free-features-2026/
  - As of October 11, 2026, Grok, a frontier AI model developed by xAI, is available as a free tier but with significant limitations compared to paid subscriptions.
  - According to Engadget, while users can access basic chats, voice interactions, and some web and X search features without cost, usage is capped, and the 'no-cost tier' is primarily designed for occasional queries or trials.
  - Paid subscriptions are required to unlock more capable models, higher usage limits, and premium tools such as image and video generation features.
  - The article notes that xAI's quota rules are subject to change based on current demand, and free users should not expect unlimited access or the same model choices as premium subscribers.

[2026-10-10] Elon Musk Announces Grok Bot Can Now Shop for Users
Tesla North — https://teslanorth.com/2026/10/10/elon-grok-bot-shopping/
  - On October 10, 2026, Elon Musk announced on X that his AI, Grok Bot (the agent version of Grok from SpaceXSI, formerly SpaceXAI), can now perform online shopping.
  - Musk stated in a post that users can 'snap a photo of your credit card, drop it into a chat with Grok Bot,' and the AI will 'hunt down the best price on whatever you want and place the order.' Musk followed this with a real-world test, claiming, 'I just ordered LEGO and Grok bought it from the LEGO website.' While Grok Bot has recently gained email inboxes and X monitoring capabilities, and a Tesla engineer indicated shopping access is coming to Cybercab in the next update, Musk did not specify if the feature is live for everyone, which countries support it, or what safeguards exist, such as spending limits or card data storage protocols.
  - SpaceXSI has not yet posted official details regarding these security measures or rollout plans.

[2026-10-09] SpaceXAI Updates Grok Bot to Search, Read, and Monitor X Posts
pc.watch.impress.co.jp — https://pc.watch.impress.co.jp/docs/news/2147147.html
  - On October 8, 2026, SpaceXAI launched an update to its AI agent 'Grok Bot' enabling users to search, read, and monitor posts on the platform X (formerly Twitter), according to an announcement published on October 9, 2026.
  - The update is available to all Grok Bot users without requiring X connector configuration.
  - SpaceXAI states the feature can be used to check product feedback, follow breaking news articles, and receive weekly summaries of industry trends.
  - The announcement was posted on X on October 7, 2026.

[2026-09-30] SpaceXAI Launches Grokipedia v0.3 with New Visuals and Six Million Articles
Tesla North — https://teslanorth.com/2026/09/30/spacexai-grokipedia-v03-launch/
  - SpaceXAI launched Grokipedia v0.3 on Wednesday, September 30, 2026, introducing a refreshed visual design and new features to its AI-generated encyclopedia.
  - The update is now live at grokipedia.com, marking the third major release following v0.1 in October 2025 and v0.2 in November 2025.
  - Benji Taylor, head of design at X and SpaceXAI, teased the launch last week before the official announcement.
  - According to its homepage, Grokipedia now hosts more than six million articles.
  - Elon Musk has positioned Grokipedia as a Wikipedia alternative where AI, specifically Grok, reviews user suggestions rather than allowing direct edits.
  - Musk stated the project will eventually be renamed 'Encyclopedia Galactica' once it reaches a sufficient quality level.
  - This release follows SpaceXAI's launch of the Grok 4.7 flagship model and Voice Transcribe 2.0, while the company maps a roadmap through Grok 5 and expands Grok as the default AI for U.S. government websites.

[2026-09-21] SpaceXAI Releases Grok 4.7 with Focus on Long-Task Execution and Pricing
凤凰网（凤凰新媒体） — https://tech.ifeng.com/c/8wa1oD2lGOw
  - On September 21 2026, SpaceXAI officially released Grok 4.7, a new AI model positioned as the strongest for programming and knowledge work.
  - The release, which was delayed from initial projections made in July 2026, focuses on long-duration task execution, self-checking, and competitive pricing rather than chat or multimodal features.
  - According to the official blog, Grok 4.7 utilizes a larger base model with extended training times.
  - Benchmark results show improvements over Grok 4.6: CursorBench 4.0 xHigh scores rose to 46.3% (from 40.4%), DeepSWE v1.1 increased to 71.0% (from 65.2%), Terminal Bench 4.0 reached 38.0% (from 20.3%), EEBench improved to 64.0% (from 53.0%), and AA Briefcase v1.1 scored 1657 (from 1546).
  - While Artificial Analysis awarded Grok 4.7 an Intelligence Index of 46, placing SpaceXAI in the global top four, the model remains behind competitors in some areas; for instance, it scored lower than Fable 5.1 Max on CursorBench and slightly below GPT 5.6 Sol Max on DeepSWE, though it outperformed competitors in the Harvey Legal Agent Benchmark with 19.6%.
  - The API pricing is set at $2 per million input tokens and $6 per million output tokens, with a fast version offering double speed for double the price.
  - Elon Musk claimed the model is twice as fast as competitors at half the price.
  - In a specific case study using the Box Agent, Grok 4.7 analyzed a $2 million insurance claim, identifying $82,000 in duplicate invoices, $64,000 in missed deductions, and a potential $143,000 discrepancy in deductibles.
  - Security benchmarks included a 62.4% score on the LatchBio biosecurity benchmark and a 3.3% failure rate on risky dual-use prompts in HackerBench v0.3.
  - Developer feedback was mixed: some praised its coding and visual capabilities, while others noted instability in 3D physics and high token consumption.

[2026-08-13] SuperNova Launches SpaceXAI's Grok 4.6 on Stella AI Platform (press_release)
プレスリリース・ニュースリリース配信シェアNo.1｜PR TIMES — https://prtimes.jp/main/html/rd/p/000000092.000138218.html
  - SuperNova Inc., a Tokyo-based generative AI developer led by CEO Takanori Kimoto, announced that its 'Stella AI' and 'Stella AI for Biz' services will begin offering SpaceXAI's latest model, 'Grok 4.6', starting August 13, 2026.
  - According to the press release, SpaceXAI released Grok 4.6 on August 12, 2026, citing performance improvements in coding and intellectual tasks compared to the previous 'Grok 4.5' model.
  - SuperNova stated its goal is to serve as a bridge connecting technology and people to realize a society that leaves no one behind.

[2026-07-29] Elon Musk Announces Two Major Grok AI Model Updates for August 2026
3DNews - Daily Digital Digest — https://3dnews.ru/1145936/ilon-mask-anonsiroval-dva-podryad-bolshih-obnovleniya-iimodeli-grok
  - Elon Musk announced via his X profile that his company SpaceXAI will release two new versions of its Grok AI model in August 2026.
  - The first model, Grok 4.6, is scheduled for release around August 7, 2026, and will feature 1.5 trillion parameters with improved SFT and RL training mechanisms to better adapt to user requests.
  - According to Musk, the second model, Grok 4.7, will launch 'a few weeks' later with 2.1 trillion parameters; he stated it will be 'better in all respects' than version 4.6, with higher token efficiency despite slightly slower processing speeds.
  - This follows the July announcement of Grok 4.5, which was targeted at developers and engineers for coding and AI agent management tasks.

[2026-07-24] SpaceXAI Announces Grok 4.6 and 4.7 Release Timeline with 2 Trillion Parameters
Next Big Future — https://www.nextbigfuture.com/2026/07/spacexai-will-release-grok-4-6-in-2-weeks-and-grok-4-7-in-4-weeks.html
  - According to a post by Elon Musk on July 24, 2026, SpaceXAI plans to release Grok 4.6 in two weeks and Grok 4.7 in four weeks.
  - Grok 4.6, confirmed by Musk as a '2T model' with 2 trillion parameters, is a direct successor to Grok 4.5 (based on xAI's 1.5T V9 foundation) and is described as 'better than our 1.5T in every way.' Initial pre-training was expected to conclude between July 20–27, 2026, with supplemental training utilizing SpaceX's engineering data to enhance reasoning.
  - The goal is to match or exceed Moonshot's Kimi K3 (reported at ~2.8T parameters) while maintaining speed and token efficiency similar to Grok 4.5, which serves roughly 80 tokens per second and is noted to be roughly 2× more efficient than comparable models on certain tasks.
  - Speculation suggests Grok 4.7 could contain 4 to 6 trillion parameters.
  - The article also details the integration of Cursor and SpaceXAI, noting that Cursor's Composer 2 (released March 19, 2026) and Composer 2.5 (released May 18, 2026) are built on Moonshot AI's Kimi K2.5 base.
  - Grok 4.5 launched between July 8–16, 2026, priced at $2 per million input and $6 per million output tokens, and is positioned as an Opus-class model optimized for coding.
  - Cursor Router, introduced on July 22, 2026, aims to reduce costs by up to 60% per commit by routing routine work to first-party models.
  - The report is authored by Brian Wang, a futurist and blogger for Nextbigfuture.com, which is ranked as the #1 Science News Blog with 1 million monthly readers.

[2026-07-09] SpaceXAI Launches Grok 4.5: Cheaper and Faster but Behind Competitors in Benchmark Scores
VnExpress VT — https://vnexpress.net/spacexai-cua-musk-ra-mo-hinh-dau-tien-sau-khi-doi-ten-5095246.html
  - On July 8, SpaceXAI (formerly xAI, renamed on July 6) released Grok 4.5, an AI model focused on programming and automation tasks, leveraging the merged Anysphere company (acquired for $60 billion in May) and trained on tens of thousands of Nvidia GB300 GPUs at the Colossus supercomputer in Memphis, USA.
  - According to Decrypt, Grok 4.5 is priced at $2 per million input tokens and $6 per million output tokens, significantly cheaper than competitors like Anthropic's Claude Opus 4.8 ($5/$25) and OpenAI's GPT 5.6 Sol ($5/$30).
  - Elon Musk, who posted at least 20 times on X regarding the launch, stated that internal evaluations place Grok 4.5's capabilities approximately equal to Claude Opus 4.7, though it is much faster.
  - While Grok 4.5 scored 53% on DeepSWE 1.1 (behind Claude Opus 4.8's 59% and GPT 5.5's 67%) and 64.7% on SWE Bench Pro (behind Anthropic's Opus 4.8 at 69.2% and Fable 5 at 80.4%), it demonstrated superior token efficiency, using an average of 15,954 output tokens per task compared to 67,020 for Opus 4.8.
  - Grok 4.5 is available via the Grok Build API in Cursor but is not yet deployed in the European market until mid-month.
  - Concurrently, on July 8, OpenAI announced the upcoming release of GPT-5.6 on July 9, featuring models Sol, Terra, and Luna, alongside the launch of GPT-Live, which offers real-time full-duplex conversation capabilities for both paid and free users.
  - Peter Assentorp of AIReleaseTracker noted that AI model release cycles have quadrupled from 18 to 69 per month between 2023 and 2025.

[2026-07-08] SpaceXAI Releases Grok 4.5, Claims Coding Superiority Despite Benchmark Deficits
gizmodo.com — https://gizmodo.com/new-name-new-grok-spacexai-officially-ties-its-brand-to-the-worlds-most-problematic-chatbot-2000783130
  - On Wednesday, July 8, 2026, SpaceXAI officially released Grok 4.5, the company's latest AI model, which it claims is its 'smartest model built to excel at coding, agentic tasks, and knowledge work.' The release marks the first launch following a partnership with AI coding company Cursor.
  - SpaceXAI stated the model 'excels at real engineering tasks' and is 'equally adept at office work.' However, the article notes that Grok 4.5 still trails behind major competitors in benchmarks, scoring on par with Anthropic's Opus 4.8 but falling behind Claude's Fable 5 and OpenAI's GPT-5.5.
  - The model is now available in Grok Build, all Cursor plans, and the SpaceXAI console.

[2026-07-08] SpaceXAI to Release Grok 4.5 to Public Following Positive Beta Feedback
Next Big Future — https://www.nextbigfuture.com/2026/07/spacexai-releasing-grok-4-5-today.html
  - SpaceXAI announced via Elon Musk's July 8, 2026 tweet that it will make Grok 4.5 available to the public 'tomorrow' (July 9, 2026), describing the model as 'Opus-class' but 'faster, more token-efficient and lower cost.' Musk stated the release is based on 'strong positive feedback from customers in our beta test program.' The article notes that achieving an 'Opus level model' would make Grok 'competitive against OpenAI,' though it clarifies that 'Opus level is not the Fable leading edge but Fable has limited availability.' The report also cites 'Similar web reports' indicating that 'online usage sessions are longer for Grok.com than for other AI like Chatgpt.' The article was published by Brian Wang, a 'Futurist Thought Leader' and 'popular Science blogger' whose blog, Nextbigfuture.com, has '1 million readers per month' and is 'ranked #1 Science News Blog.'.

## Research reports (one per dimension: web search + page reads, dated, with sources)
### CURRENT STATE
- [2026-10-13] The resolution page (docs.x.ai release notes, "Last updated: October 10, 2026") has no Grok 4.8 entry. Its newest model entry is Grok 4.7 (Sept 21). Other items are a Sept 25 safety_identifier field, a Sept 17 voice-transcribe 2.0 release, a Sept 2 note on the Nov 2 image-quality retirement, and an Oct 2 voice-transcribe-1.0 end of life. The page nav labels Grok 4.7 "Latest". https://docs.x.ai/developers/release-notes
- [2026-09-21] Grok 4.7 shipped. The release notes entry and the launch post (x.ai/news/grok-4-7) appeared the same day, about two months after Musk first teased it and after at least five missed dates. https://decrypt.co/378824/xai-launches-grok-4-7
- [2026-09-13/14] Musk first named Grok 4.8 on X. He called it a 2.5T-parameter model on a new C++ training stack, set to finish training that week and then start RL. He added that it "will be a noticeable improvement" over 4.7 and that 4.9 is "probably Astra/Fable class". https://x.com/elonmusk/status/2099458047408013751
- [2026-09-28] A tracker found no 4.8 on any xAI surface (news, model directory, release notes, llms.txt). Its only trace was a commit showing a grok-4.8 family in Cursor's server model list (Sept 28), which is unofficial. Musk's gaps between "training finished" and release were 25 days (4.6), 40 days (4.7) and 52 days (4.5). By that tracker's arithmetic, a mid-September training finish implies a release between early October and early November. https://cellcog.ai/blog/grok-4-8-release-date/
- [2026-10-12] Wccftech reports Musk saying the upcoming Grok 4.8 will "likely not perform at par with Fable-class models". The same report says Grok now routes queries to rival models, with SpaceXAI positioned as an orchestration layer. I did not verify the underlying Musk post. https://wccftech.com/elon-musk-warns-you-should-not-torture-ai-models-as-reasoning-traces-show-it-feels-like-a-gun-to-their-head-and-that-torturing-super-intelligence-might-spur-it-to-get-revenge/
- [2026-10-12/13] SpaceXAI, now branded SpaceXSI, launched "The X Subscription". It bundles Grok, Cursor and X Premium into Free, Plus ($8), Premium ($30), Super ($100) and Ultra ($200) tiers. This is a product and pricing change, not a model release. https://forest.watch.impress.co.jp/docs/news/2147453.html
- [2026-10-12] Musk is promoting Grok Bot shopping (reported Oct 10 and Oct 12). No 4.8 release date accompanies this. https://moneywise.com/news/top-stories/elon-musk-grok-credit-card-shopping-purchases
- [2026-09-28 to 2026-10-13] The docs and Wikipedia still list Grok 4.7 as the current stable release. One outlet (tech-insider) gives an Oct 11 launch date for 4.7, which conflicts with the official Sept 21 date, so treat it as unreliable. https://en.wikipedia.org/wiki/Grok_(chatbot)
- [2026-09-14 to date] I found no official 4.8 release date, model card, price or API ID. Everything on 4.8 timing comes from Musk's X posts and third-party trackers. https://cellcog.ai/blog/grok-4-8-release-date/

BOTTOM LINE: As of Oct 13, Grok 4.8 is unreleased and has no entry on the release notes. Based on Musk's own past training-to-release gaps and the Cursor model-list trace, a release before Nov 15 is plausible but unconfirmed, and Musk's dates have slipped on every earlier Grok 4.x release.

NOT FOUND: any Musk date or "X days" estimate for Grok 4.8, any official xAI or SpaceXAI 4.8 announcement, and any 4.8 mention on the release notes page. I also could not fetch the Oct 12 Musk post on 4.8 not matching Fable-class models, so that item rests on Wccftech alone.

### BASE RATE
- [2026-10-10] The SpaceXSI release notes, last updated Oct 10, have no Grok 4.8 entry. The newest model entry is Grok 4.7 on Sep 21; the only October entry is the Oct 2 grok-voice-transcribe-1.0 end of life. Grok 4.8 is not there yet. https://docs.x.ai/developers/release-notes
- [2026-10-10] Release-notes dates for the 2026 Grok 4.x line: 4.20 on Mar 10, 4.5 on Jul 8, 4.6 on Aug 12, 4.7 on Sep 21. Gaps are about 35 days (4.5 to 4.6) and 40 days (4.6 to 4.7). 4.3 shows no entry in these notes. Third-party trackers date the 4.3 beta to Apr 17 and the API to Apr 30. The notes list a model only once it is on the API, so a Cursor-only or app-only launch might not appear. https://docs.x.ai/developers/release-notes
- [2026-10-10] Counting 40 days from Sep 21 gives about Oct 31. Counting 35 days gives Oct 26. Nov 15 is 55 days after 4.7, longer than every recent gap. The 4.5 to 4.6 gap and the 4.6 to 4.7 gap are both shorter than that. https://aireleasetracker.com/company/xai
- [2026-09-13] Musk said Grok 4.8 is a 2.5T-parameter model on a new C++ stack. He said it would "finish training this week and start RL". He gave no release date. https://cellcog.ai/blog/grok-4-8-release-date/
- [2026-09-28] One tracker compares Musk's "training finished" posts with the later releases: 52 days for 4.5, 25 days for 4.6 and 40 days for 4.7. Applied to a mid-September finish, that gives early October to early November. This is a third-party calculation, not an official one. https://cellcog.ai/blog/grok-4-8-release-date/
- [2026-09-29] Grok 4.8 appears in xAI's public grok-build repository, in the model picker and router tests. A Cursor server list reportedly shows grok-4.8 variants, but that has a single source. Neither is an official launch. https://artificialwatch.com/model/grok-4-8
- [2026-10-13] Polymarket "Next Grok Model (4.8+) released by…?" opened Sep 22. The rendered page shows Oct 31 at about 10% and Nov 30 at about 87%. A Nov 15 contract was not shown on the fetched page, so Nov 15 sits somewhere between those two. The market needs public availability, so it is not the same test as a release-notes mention. https://polymarket.com/event/next-grok-model-4pt8-released-by
- [2026-10-12] Musk reportedly said 4.8 would "likely not perform at par with Fable-class models". He also said Grok now routes queries to rival models. This does not suggest the 4.8 launch is being pulled forward or dropped. https://wccftech.com/elon-musk-warns-you-should-not-torture-ai-models-as-reasoning-traces-show-it-feels-like-a-gun-to-their-head-and-that-torturing-super-intelligence-might-spur-it-to-get-revenge/
- [2026-09-02] Reference class for Musk's own timelines: Grok 4.7 was promised in "10 days" on Sep 2 and shipped Sep 21, about 19 days after the promise. A Decrypt report says there were at least five delays since late July. Grok 4.6 was promised around Aug 7 and shipped Aug 12. Every Grok 4 release has slipped, but by weeks, not months. https://decrypt.co/378824/xai-launches-grok-4-7
- [2026-09-13] Naming risk: Musk named the next model 4.8 and said 4.9 would be "probably Astra/Fable class". That makes a rename or skip less likely. A change to 5 is unlikely in this window. The question resolves No if 4.8 is skipped or renumbered. https://startupfortune.com/elon-musk-shelves-grok-47-and-unveils-grok-48-instead/
- [2026-10-12] SpaceXAI launched "The X Subscription" bundling Grok, Cursor and X Premium. This is product restructuring, with no 4.8 date given in the coverage I found. https://forest.watch.impress.co.jp/docs/news/2147453.html
- [2026-10-13] Dates conflict across sources. One site says 4.7 shipped Oct 11. The release notes and Polymarket both say Sep 21, so I treat Sep 21 as correct. https://tech-insider.org/grok-4-7-release-terminal-bench-coding-score-2026/

BOTTOM LINE: Historical gaps of about 35–40 days between Grok 4.x releases point to late October to early November for 4.8. Nov 15 is 55 days after 4.7, beyond every recent gap, though Musk's slips have been weeks long, not months. The Polymarket 4.8+ market shows about 87% by Nov 30 and about 10% by Oct 31, so a mid-November date is plausible but not certain. Residual risks are a skip or rename, a 4.8 launch that is not on the API, and a delay past Nov 15.

NOT FOUND: A Polymarket contract for Nov 15 specifically. A dated Musk statement on 4.8 timing after Sep 14. An official xAI announcement or model page for 4.8. The BeInCrypto article cited in the question; its "4.7 in 10 days" headline matches Musk's Sep 2 post.

### KEY FACTORS
- [2026-10-13] On the release-notes page (fetched, "Last updated: October 10, 2026"), a model gets an entry only when it is on the API. The 4.7 entry says it is "now available on the xAI API". The same entry says Grok 4.7 Fast is "available only in Cursor and Grok Build, not on the public xAI API". So a Cursor/Grok Build-first launch of 4.8 would not by itself create a notes entry. A 4.8 API listing, even a one-line mention, would. The 4.7 entry also names the "announcement". The notes page and the launch post appeared the same day for 4.7. https://docs.x.ai/developers/release-notes
- [2026-09-21] The x.ai launch post for 4.7 (fetched) says it was "available today in Cursor and Grok Build" and also through the API, third-party harnesses and routers. The release pattern is therefore all-surfaces on day one. That makes a Cursor-only 4.8 launch with no API entry less likely, though not impossible. https://x.ai/news/grok-4-7
- [2026-09-21] The same post says 4.7 "uses a new, larger base model" and had a longer RL run. A 2.5T 4.8 would be a further base-model step. The 4.7 timeline (RL tuning from about Aug 12, shipped Sept 21) suggests post-training and safety work take 5–6 weeks. 4.8's RL was due to start about Sept 14–21, which points to late October to early November. That is my inference, not a stated date. https://x.ai/news/grok-4-7
- [2026-09-14] An xAI staffer (Maciej Mikuła) reportedly called the new C++ stack the "fastest training stack in the world". Musk replied directly that AGI "will be Grok 5", not 4.8. The new-stack risk is that RL or serving problems on an unproven stack could cause delay. Nothing yet confirms trouble. https://explainx.ai/blog/grok-4-8-2-5-trillion-parameters-cpp-training-stack-2026
- [2026-09-29] Readiness traces: the public grok-build repo lists "grok-4.8" in its model picker and router tests, with 500K and 256K context windows. Cursor's server list has grok-4.8-high, -high-fast and -xhigh-fast variants. A poster who flagged the Cursor listing on Sept 28 called it "prep" and said not to read it as imminent. These traces show integration work is under way and say nothing about when it ships. https://artificialwatch.com/model/grok-4-8
- [2026-10-11] Speculation of an imminent launch ("this week", guessed Friday Oct 16) comes from fan accounts. Another reply in the same thread said Opus 5.5 is now "so far ahead" that nobody is waiting for 4.8. No insider or official source backs the Oct 16 guess. https://x.com/mark_k/status/2109252215361716682
- [2026-10-04] Naming mechanism: Musk posted "No more AI", then "SI", after the Trump order on "super intelligence" terminology, and the company is now branded SpaceXSI. A fan suggested a name like "Grok 4.8 SI". The docs already use "SpaceXSI". A decorated name still contains "4.8", but any change to the numbering (e.g. 4.80, or a jump to a different number) resolves No. https://en.wikipedia.org/wiki/SpaceXAI
- [2026-10-01] A commenter reasoned that 4.8 was "announced for September" and so must come in October, with 4.9 in November. This is a fan's guess, not a source. It shows how the community anchors on Musk's Sept 13 post. Musk's Sept 13 post said only that training would finish that week, and gave no release date. https://x.com/testerlabor/status/2105303946566722006
- [2026-10-13] Causal chain for a Yes, in order: (1) the 2.5T run finishes and RL completes, controlled by xAI and Musk; (2) safety and eval work is done (4.7 shipped with a "new safeguard stack"); (3) a same-day launch across Cursor, Grok Build, x.ai and the API; (4) a docs entry is added, as it was for 4.5, 4.6 and 4.7; (5) the model is still called "4.8" at launch. The Oct 12–13 X Subscription launch (bundling Grok and Cursor) and the Oct 12 comment that 4.8 will "likely not perform at par" with Fable-class models are consistent with a launch being prepared. They do not date it. https://docs.x.ai/developers/release-notes
- [2026-10-13] Mechanism risks for a No: (a) 4.8 could be merged or renamed if 4.9 or a better checkpoint finishes sooner; (b) 4.8 could ship only in the Grok app or Cursor, with no docs entry; (c) the date could slip past Nov 15. The first two are not evidenced and look low-probability, since the repo and Cursor list already use the "4.8" ID. The slip is the main risk. Earlier 4.x promises missed their stated dates by 1–3 weeks, and a 55-day gap since 4.7 would exceed the recent 35–40 day intervals. https://x.ai/news/grok-4-7

BOTTOM LINE: The Yes path needs one thing from xAI: 4.8 live on the API, with a notes entry, under the exact name "4.8" by Nov 14. The repo and Cursor traces plus the roughly 35–40 day cadence put the likely window at late October to early November, and the main risk is a slip rather than a rename. Musk's date record for Grok 4.x is poor, but the slips have been weeks long, not months.

NOT FOUND: any official SpaceXAI/SpaceXSI date, model card or API ID for 4.8; any new Musk post after Oct 12 on 4.8 timing (the Oct 12 "not at par" remark rests on Wccftech and I did not verify the underlying post); any docs-page mention of 4.8 as of the Oct 10 update.

### EXPERT VIEW
- [2026-10-13] The release notes page (last updated Oct 10) has no Grok 4.8 entry. The latest model entry is Grok 4.7 on Sep 21, and the page's "Meet grok-4.7" banner points to it. Earlier model entries: Grok 4.6 on Aug 12 and Grok 4.5 on Jul 8. The latest entry overall is an Oct 2 end-of-life notice. https://docs.x.ai/developers/release-notes
- [2026-10-13] Polymarket, "Next Grok Model (4.8+) released by...?" (opened Sep 22), showed this when I rendered the page:
  - Oct 31: about 10% (Buy Yes 12¢, volume $3,295).
  - Nov 30: about 87% (Buy Yes 87¢, volume $1,104).
  - There is no Nov 15 contract. Both contracts are thinly traded.
  - Resolution needs general-public availability of a model designated 4.8 or higher, which is not the same as a release-notes mention. https://polymarket.com/event/next-grok-model-4pt8-released-by
- [2026-10-03] A cached snapshot of the same market showed Oct 31 at 60% and Nov 30 at 86% (an indexed copy also says 62% and 88%). The Oct 31 price has since fallen from about 60% to about 10%. https://polymarket.com/fr/event/next-grok-model-4pt8-released-by
- [2026-09-29] ArtificialWatch repeats the Polymarket numbers: Oct 31 at 10% and Nov 30 at 88%. It notes that xAI's public grok-build repo lists "grok-4.8" in its model picker and router tests, with 500K and 256K context windows. It also reports a single-source Cursor server list with grok-4.8 variants. https://artificialwatch.com/model/grok-4-8
- [2026-09-28] Cellcog's tracker found no Grok 4.8 on xAI's news, model directory, release notes or llms.txt. It reports a commit to an open-source tool showing a grok-4.8 family in Cursor's model list, with no announcement. https://cellcog.ai/blog/grok-4-8-release-date/
- [2026-09-13/14] Musk on X: Grok 4.8 is a 2.5T-parameter model on a new C++ stack that "will finish training this week and start RL". He called it "a noticeable improvement" over 4.7. He put 4.9 at "probably Astra/Fable class" and Grok 5 at "maybe better than anything". He gave no release date. https://teslanorth.com/2026/09/14/elon-grok-roadmap-through-grok-5/
- [2026-10-12] Wccftech reports Musk saying Grok 4.8 will likely not match Fable-class models. It also reports that Grok now routes queries to rival models. This points to a 4.8 launch, though not a confirmed date. https://wccftech.com/elon-musk-warns-you-should-not-torture-ai-models-as-reasoning-traces-show-it-feels-like-a-gun-to-their-head-and-that-torturing-super-intelligence-might-spur-it-to-get-revenge/
- [2026-10-11] Mark Kretschmann (@mark_k) posted that Grok 4.8 might appear this week. He expects it first in Cursor and Grok Build, with a wider rollout to the Grok app and site later. A reply from @testerlabor guessed Friday (Oct 16). These are speculation with no sourcing, and neither is a track-record source. https://x.com/mark_k/status/2109252215361716682
- [2026-09-02] Musk's track record on 4.7: he gave at least five dates (Jul 24 "4 weeks", Aug 12 "3–4 weeks", Sep 1 "10 days", Sep 11 "a few more days") and missed all of them. 4.7 shipped Sep 21, about 10 days after the Sep 11 target. Cellcog's table of missed dates is the source for this. https://cellcog.ai/blog/grok-4-7-release-date/
- [2026-09-14] Skeptical analyst arithmetic: Musk said 4.7 training was complete on Aug 12, and it shipped 40 days later. Applying the same lag to 4.8 gives about Oct 24 or later. One blog's cadence estimate (gaps of 27 and 40 days between releases) puts Grok 5 in mid-Dec to mid-Jan, and says "December at the earliest" (for Grok 5, not 4.8). https://www.progressiverobot.com/2026/09/14/grok-4-8-2-5t-model-cpp-software-stack/ and https://www.izzedo.chat/blog/grok-5
- [2026-09-20] A tracker states that xAI had announced no 4.8 date, API model or price. Third-party model trackers still list 4.8 as "announced" or unreleased. https://shop.zimaspace.com/blogs/tech-ai-hub/grok-4-8-2-5t-model-cpp-training-stack
- [2026-10-13] SpaceXAI launched "The X Subscription" on Oct 12, bundling Grok, Cursor and X Premium. Coverage doesn't mention a 4.8 date, though the Ultra tier is billed as giving the earliest access to new products. https://newsable.asianetnews.com/markets/spacex-bundles-grok-x-and-cursor-into-new-subscription-tiers-articleshow-thby8dn

BOTTOM LINE: The one liquid market, Polymarket's Nov 30 contract, prices a 4.8+ public release at about 87%, but only about 10% by Oct 31. Its close date is two weeks after this question's deadline, so it does not map directly onto Nov 15. Musk has a poor record of hitting dates, and the question needs a mention in the release notes specifically. Code traces and Musk's recent comments suggest 4.8 is close, but nobody official has given a date.

NOT FOUND: Kalshi, Manifold or Metaculus markets on Grok 4.8. Any Polymarket contract for Nov 15 specifically. Any official SpaceXAI date for 4.8. Any expert forecast with a documented track record.

### YES CASE
YES means: a Grok version numbered exactly 4.8 is mentioned on docs.x.ai/developers/release-notes between Oct 13 and Nov 15, 2026.

- [2026-10-13] The release-notes page, fetched in full, shows no 4.8 entry. Its "Last updated" line reads Oct 10. The newest model entry is Grok 4.7 on Sep 21, which was published on the same day it reached the API as `grok-4.7`. The Grok 4.7 entry says "Grok 4.7 Fast" is Cursor/Grok Build only and not on the public API. A 4.8 mention could therefore appear even if the first rollout is limited to those two products. https://docs.x.ai/developers/release-notes
- [2026-10-13] The page nav and the docs overview, quickstart and Grok Build pages all name grok-4.7 as "latest". The docs have already been rebranded to SpaceXSI and now carry "Grok Bot" and "X Subscription" sections. Docs are being actively maintained as the company reorganizes, so a new-model entry has a live pipeline. https://docs.x.ai/build/overview
- [2026-09-29] The `grok-build` repo lists "grok-4.8" in its model picker with 500K and 256K context windows in router tests, read by ArtificialWatch on Sep 29. Per the Sep 28 tracker, a Cursor server list carried `grok-4.8-high`, `-high-fast` and `-xhigh-fast`. The repo is first-party code, so integration work is under way. https://artificialwatch.com/model/grok-4-8
- [2026-10-11] Mark Kretschmann posted "we might see Grok 4.8 … this week", which is speculation. A reply guessed Friday Oct 16. A third reply said nobody is waiting for 4.8 because Opus 5.5 is far ahead. The post also quotes a Musk Oct 4 reply, "No more AI SI it's better", which fits the SpaceXSI rebrand. The rebrand does not change the model numbering. https://x.com/mark_k/status/2109252215361716682
- [2026-09-14] Musk said "finish training this week and start RL". RuntimeWire's summary of the thread says he committed only to starting RL that week. It adds that he is already preparing a 3T model on better software and data. Musk is running 4.8, then 4.9, then a larger run in sequence. That suggests 4.8 is meant to ship as a stepping stone rather than be skipped. https://runtimewire.com/article/spacexai-grok-4-8-reinforcement-learning-cpp-stack
- [2026-10-10] The twoweeks.lol tracker marks the "finish training by Sep 20" claim as missed on the grounds that there is no public receipt. Training completion is an internal milestone, so the missed flag does not show 4.8 is stalled. https://twoweeks.lol/predictions/grok-4-8-finish-training-this-week/
- [2026-09-23] The SpaceXAI cadence is 4.5 on Jul 8, 4.6 on Aug 12 and 4.7 on Sep 21. ArtificialWatch also lists Grok Voice Think Fast 2.0 on Jul 29. Those gaps are about 35 and 40 days. Applying them to Sep 21 gives Oct 26 to Oct 31, about two to three weeks before the Nov 15 cutoff. The listing also shows Grok 4.4 and Grok 4.9 as "watching", so a 4.9 placeholder exists, but those are only tracker entries. https://artificialwatch.com/model/grok-4-8
- [2026-10-12] Wccftech reports Musk saying 4.8 would likely not reach Fable-class. Musk is framing 4.8 as the next release and 4.9 as the Fable-class one. He is also positioning the product as a router that can send queries to rival models. The weaker claim for 4.8 could make a quick ship less costly for him. I did not verify the underlying post. https://wccftech.com/elon-musk-warns-you-should-not-torture-ai-models-as-reasoning-traces-show-it-feels-like-a-gun-to-their-head-and-that-torturing-super-intelligence-might-spur-it-to-get-revenge/
- [2026-10-12] The "The X Subscription" launch ties Grok usage and Cursor into shared weekly quotas, and the Ultra tier is billed as earliest access to new products. A bundled plan with higher quotas gives SpaceXSI a reason to ship a stronger model into Cursor and Grok Build. It is not a 4.8 date. https://newsable.asianetnews.com/markets/spacex-bundles-grok-x-and-cursor-into-new-subscription-tiers-articleshow-thby8dn
- [2026-10-13] The most likely path to YES is: (1) Musk or SpaceXSI ships 4.8 to Cursor and Grok Build in the 4-week window from late October to mid-November; (2) the docs team adds a "Grok 4.8" entry, as it did for 4.6 and 4.7 on launch day; (3) the numbering stays "4.8". An entry such as "Grok 4.8 Fast" in the notes would also count under the "any mention" wording. https://docs.x.ai/developers/release-notes

BOTTOM LINE: The strongest YES case rests on first-party code traces (the grok-build repo, plus a Cursor list reported by a single source), a 35–40 day cadence that lands before Nov 15, and a docs team that logs each model on its launch day. The weak points are Musk's history of slipping dates and the lack of any official date.

NOT FOUND: any official SpaceXSI date, model card or API ID for 4.8; any 4.8 mention on the release-notes page; a Musk statement of an "N days" timeline after Sep 14; a Nov 15 prediction-market contract; verification of the Oct 12 Musk post on Fable-class.

### NO CASE
YES means: a Grok version numbered exactly "4.8" gets any mention on docs.x.ai/developers/release-notes between Oct 13 and Nov 15, 2026.

- [2026-10-13] The release notes page, fetched in full, says "Last updated: October 10, 2026". It has no 4.8 entry and no pre-announcement or "coming soon" item. The only October entry is an Oct 2 voice-model end-of-life. Every model entry on it is a "now available on the API" note, so a 4.8 mention depends on an API launch (or a Cursor/Grok Build-only note like the 4.7 Fast line), not on Musk's posts or code traces. https://docs.x.ai/developers/release-notes
- [2026-09-21] The 4.7 entry shows how Cursor/Grok Build-only variants are handled. "4.7 Fast" is mentioned inside the 4.7 entry, not as a separate item. A 4.8 staged first in Cursor and Grok Build, as @mark_k expects, could therefore reach users without a 4.8 mention until the API goes live. The Cursor server-list trace for 4.8 variants is single-source. https://docs.x.ai/developers/release-notes
- [2026-10-11] The "this week" and "Friday" calls for 4.8 come from fan accounts (@mark_k and @testerlabor), and I could not find any sourcing behind them. The same accounts said on Sep 29–Oct 1 that 4.8 would come in October and that "one or two weeks" remained. By Oct 13 nothing had shipped. Their track record is poor. https://x.com/mark_k/status/2109252215361716682
- [2026-10-12] Musk's rhetoric undercuts urgency to ship. He said 4.8 will likely not match Fable-class models (fetched Wccftech; underlying Musk post not seen). The Sept 27–28 China Media Group interview has him saying Grok probably catches up to the frontier "sometime next year". He rates 4.7 as a "workhorse" that trails Opus 5.5, so there is little competitive pressure to launch 4.8 fast. https://www.tikr.com/blog/cold-water-for-musk-spacex-is-not-competitive-at-the-frontier-at-least-not-yet
- [2026-10-12] SpaceXSI's focus this month is on products, not models. The X Subscription consolidation (Oct 12), Grok Bot shopping (Oct 10–12), and Grok Bot routing to rival models are all pushed. The Wccftech piece itself frames SpaceXAI as an orchestration layer. These launches take up product and docs bandwidth. They also lower the pressure to ship 4.8 on a fixed date. https://wccftech.com/elon-musk-warns-you-should-not-torture-ai-models-as-reasoning-traces-show-it-feels-like-a-gun-to-their-head-and-that-torturing-super-intelligence-might-spur-it-to-get-revenge/
- [2026-09-14] 4.8 is at an earlier stage than the trackers imply. On Sep 13–14 Musk said it would "finish training this week and start RL". RL was the exact phase that held 4.7 up for weeks. The delay was a bug that over-penalised response length and made the model quit hard tasks. It is also the first model on a brand-new C++ stack, which adds risk to a first run. A mid-September training finish followed by 40 days gives about Oct 24. If the RL needs another cycle, as it did for 4.7, the date moves toward mid-November. https://www.orcarouter.ai/blog/grok-4-8-leak
- [2026-10-06] I found no new Musk statement on 4.8 timing between Sep 14 and Oct 13. Fan accounts were still recirculating the Sep 14 post on Oct 6 as the latest news, and no progress update has been posted since. That is a month without a confirmed RL-complete signal. https://x.com/testerlabor/status/2107464436311273740
- [2026-10-13] Market pricing leaves roughly a 10–13% chance of an Oct 31 release and about 87–88% by Nov 30, as reported. The Oct 31 price fell from about 60% on Oct 3. That drop shows the market is pushing 4.8 out to November. The Nov 30 contract resolves 15 days after this question closes. The market also tests general-public availability, not a docs mention, so it does not directly set the Nov 15 odds. https://artificialwatch.com/model/grok-4-8
- [2026-09-21] Musk's slippage rule: Grok 4.7 ran about 10 days late against the Sep 11 "few more days" target, and missed at least five dates over about two months. A 4.8 that is four to eight weeks from its RL start is plausible but is not guaranteed. A launch of Nov 16–30 would resolve No, and it fits the Nov 30 market just as well. https://www.winzheng.com/en/article/xai-grok-4-8-2-5t-cpp-stack-agi-roadmap-grok-47-delay
- [2026-10-11] Naming and rebrand technicalities: the company is now "SpaceXSI". The docs page uses that name, and Musk said on Oct 4 "No more AI SI It's better". A fan suggested the name "Grok 4.8 SI". A suffix or rename would probably still contain "4.8". Skipping to 4.9 or 5, or shipping a variant with a different number, would resolve No under the literal wording. The "4.80" case named in the question is an unlikely formatting risk. https://x.com/mark_k/status/2109252215361716682
- [2026-10-13] The page-update cadence adds a lag risk. The last update stamp is Oct 10, and the 4.7 entry was dated the same day as the launch post, so a docs lag is not an issue. But an app-only or Cursor-only 4.8 preview in the window would not trigger a 4.8 entry. https://docs.x.ai/developers/release-notes

BOTTOM LINE: The status quo is No. There is no 4.8 on the docs page, no official date, and no Musk update since Sep 14, and the market has moved Oct 31 odds down to about 10%. The No path needs 4.8 to slip past Nov 15, to stay off the API (Cursor/app-only), or to be renumbered. Musk's 4.x record of weeks-long slips and the RL risk on a new stack make that credible, though not the most likely outcome.

NOT FOUND: Any Musk or SpaceXSI date for 4.8. Any Musk post on 4.8 since Sep 14 (I could not open the Oct 12 "not at par with Fable" source post). A Polymarket contract for Nov 15. Any mention of 4.8 on the release notes page. Any sourcing for the "this week / Friday" claims.

## Required pre-forecast walkthrough

Before giving probabilities, walk through these explicitly:
  (0) Resolution check: do the sources above show the resolving condition ALREADY met (or already impossible) as of today? If so, say which source and price it at the cap. Otherwise, name what would still have to happen and by when (the RESOLUTION date).
  (a) The time left until the question resolves.
  (b) The status quo outcome — what happens if nothing changes from today.
  (c) A brief scenario that results in NO.
  (d) A brief scenario that results in YES.

## Calibration guidance

- **Anchor on the status quo.** Require strong specific evidence to move far from it.
- 0.05 / 0.95 require strong, multi-source evidence. Avoid >0.97 or <0.03 unless the outcome is already settled or near-tautological — overconfident misses are punished heavily by the log score.
- **Prediction markets are a prior, not an anchor.** If the evidence lists a SAME QUESTION market, treat its price as a strong, well-calibrated prior and name the specific evidence the market lacks whenever you land more than ~15 percentage points from it. A RELATED market (different deadline, threshold or resolution) is context only — do not anchor on it. If no market is listed, there is none on this question; do not assume one.
- **Anchor on the resolution source.** If the evidence includes a RESOLUTION SOURCE block, the question resolves on what THAT page shows, not on what the world does. If it says the resolving condition is already met, the correct probability is at the cap (0.97-0.98); if definitively unmet with no path left, 0.02-0.03. Otherwise its current state is your status quo, and the gap between the source and reality (lagging updates, different metric, classification rules) is a first-class risk to price explicitly, not a footnote at 5%.
- **Treat research as fallible, not ground truth.** A single-source or "very recent" claim — especially one the evidence flags as unverified, possibly AI-generated, or low-credibility — must not drive you to near-certainty. When a load-bearing fact is unverified, list it in unverified_claims (it will be checked) and keep at least 10-15% on the chance it is wrong.

## Output

Return ONLY valid JSON, no markdown fences:

{
  "rationale": "<address (0) (a) (b) (c) (d) above — 5-8 sentences total>",
  "p_yes": <float in [0.01, 0.99]>,
  "what_would_change_my_mind": "<1-2 sentences: what new info would push you above 70% or below 30%>",
  "unverified_claims": ["<a fact your forecast depends on that no source above confirms, one that would move p_yes by 10+ points if false; [] if none>"]
}