Will there be no next Google Gemini Pro model release by October 31, 2026?

- [2026-10-13] Google's Gemini API models page (last updated 2026-10-13) shows a banner "Gemini 4 Argon is now available". It lists gemini-4-argon as "Stable" and describes it as the "flagship reasoning model". The name carries no "Pro" label. No gemini-3.5-pro or gemini-4-pro entry appears on the page. https://ai.google.dev/gemini-api/docs/models - [2026-10-13] Google Cloud's model lifecycle page lists gemini-4-argon with a release date of October 13, 2026, and gemini-4-argon-cyber-permissive on the same date. It lists no Pro-labelled model among the latest models. The newest Flash model is gemini-3.8-flash (2026-09-02). https://docs.cloud.google.com/gemini-enterprise-agent-platform/models/model-versions - [2026-10-13] A secondary report (felloai, not fetched; the page returned 403) says Argon was announced on 2026-09-30 to vetted cyber defenders and opened publicly on 2026-10-13. Access is for Google AI Pro and Ultra subscribers and the paid API, not the free tier. The same report says Google's release notes describe the app rollout. https://felloai.com/all-we-know-about-google-gemini-4/ - [2026-09-30] Google announced Gemini 4 Argon, with initial access limited to trusted cyber defenders via the Fairwind Program. As of 2026-10-01 no public API entry existed. https://evolink.ai/blog/gemini-4-release-date - [2026-10-03] A secondary report says Gemini 3.5 Pro never shipped. The "3.5 Pro coming soon" label was still on the Gemini Pro page on that date, and Google has not formally cancelled it. https://aiwiz.uk/blog/gemini-3-5-pro - [2026-08-23] Gemini 3.5 Pro had missed three targets (June, mid-July, early August). Google DeepMind's page listed Gemini 3.1 Pro as the current Pro model. 3.1 Pro was released 2026-02-19. https://codersera.com/blog/gemini-3-5-pro-launch-guide-2026/ - [2026-09-20] Per a tracker, no gemini-3.5-pro entry existed in the API model list. Google had said at I/O on 2026-05-19 that Pro would roll out "next month". https://geotoolbox.ai/blog/gemini-3-5-pro - [2026-09-23] Koray Kavukcuoglu said Gemini 4 was in post-training and would launch "much earlier" than year-end. This is as reported by a third party. https://www.trendingtopics.eu/gemini-4-rumors-google/ - [2026-10-06] The Gemini API changelog shows the latest releases are Flash, TTS, Live and image models (Nano Banana 2.1 on 2026-10-06). None is Pro-labelled. https://releasebot.io/updates/google/gemini-api - [2026-10-01] The Gemini API model list has no Pro-labelled model. 3.1 Pro is not among the current models listed, and gemini-3-pro-preview was shut down on 2026-03-09. https://ai.google.dev/gemini-api/docs/deprecations - [2026-08 to 2026-09] Polymarket's sibling market "next Gemini Pro released by Oct 31" has a description that treats 3.5 Pro and Gemini 4 as the candidates for a Pro-labelled model. It notes Google prioritised Flash releases while Gemini 4 pre-training advanced. https://polymarket.com/event/when-will-the-next-google-gemini-pro-model-be-released-20260817144359068 - [2026-09 rumours] Some outlets use "Gemini 4 Pro" as a leaker or community name. A cellcog tracker says no Google product named "Gemini 4 Pro" or "Flash" exists. https://cellcog.ai/blog/gemini-4-release-date/ BOTTOM LINE: Google shipped Gemini 4 Argon publicly on 2026-10-13, which is after the market opened. Its name has no "Pro" label, though Google calls it the flagship. The outcome therefore turns on whether Argon counts as a "Pro" model, or whether Google releases a separately labelled Pro model (3.5 Pro or a Gemini 4 Pro) by Oct 31. No such Pro-labelled model has been announced, and no scheduled event before Oct 31 was found. NOT FOUND: Any official Google statement calling Argon a "Pro" tier or announcing a Pro variant. The Gemini app release-notes page text for Oct 13 (only the secondary report cites it). Any scheduled Google event before Oct 31. Any Pro-labelled model in the current API list.

- [2026-10-13] Google released Gemini 4 Argon to the public. The Gemini API changelog lists `gemini-4-argon` as GA on 2026-10-13. Google's own blog says it is globally available via the API, to Ultra and Pro subscribers in the Gemini app, and to Ultra subscribers in Antigravity. It carries no "Pro" label; the model name is Argon. This release is on the market's Oct 12–13 dates, but it is not obviously a qualifying "Pro" model. https://ai.google.dev/gemini-api/docs/changelog - [2026-10-13] Google's Gemini app release notes call Argon "our newest frontier model" and list it for Google AI Pro & Ultra subscribers. The word "Pro" there refers to the subscription tier, not the model name. This is a possible resolution ambiguity, but the rules require the model itself to be labeled "Pro". https://gemini.google/release-notes/ - [2026-09-30] Google announced Gemini 4 Argon. Trade press (Fello AI, Toloka, NeuralTrust) notes that it is the first Gemini with a codename instead of a Pro/Flash tier name. Google has not said what other Gemini 4 models will be called. https://neuraltrust.ai/blog/gemini-4-argon - [2026-10-03] Gemini 3.5 Pro was announced at I/O on 2026-05-19 and promised for June. It never shipped, and the rumored July 17 and August 12 dates passed. Engadget says Google chose to focus on Gemini 4 instead. Google has not formally cancelled 3.5 Pro. This is a secondary source (aiwiz.uk, checked Oct 3). https://aiwiz.uk/blog/gemini-3-5-pro/ - [2026-10-09] The newest Pro model on the API is still Gemini 3.1 Pro, a preview from 2026-02-19. Toloka says that between February and September 2026 Google shipped four Flash generations and no new GA Pro. https://toloka.ai/blog/gemini-models-explained/ - [2026-10-14] Google's deprecations page, fetched live, lists gemini-3.1-pro-preview (2026-02-19) with no shutdown date. The only new Gemini API entries since then are Flash, Flash-Lite, TTS, Live, image and Argon models. No Pro model appears. https://ai.google.dev/gemini-api/docs/deprecations - Base rate, Pro releases: 2.0 Pro exp 2025-02-05; 2.5 Pro 2025-03-25 (preview), 2025-05-06 and 2025-06-05 (updates), GA 2025-06-17; 3 Pro 2025-11-18; 3.1 Pro 2026-02-19. That is roughly 6 Pro-labeled releases in 12 months through Feb 2026, then none for about 8 months. Since the market opened on 2026-09-22 there has been no Pro release. https://www.scriptbyai.com/google-ai-timeline-biggest-moments/ - [2026-10-12] Another Polymarket market in the same event family, "Next Gemini Pro Model released on…?", was showing "No release by October 31" at about 90%, with Oct 12/20/31 dates at roughly 3–5% each. It had about $100k of volume. It was shown before the Oct 13 Argon release. These are Polymarket figures from a search snippet and may be stale. https://polymarket.com/event/next-gemini-pro-model-released-onptptpt-20260922131618444/will-the-next-google-gemini-pro-model-be-released-on-october-17-2026 - [2026-09-24] Rumor-mill track record is poor. Geeky Gadgets (2026-09-20) said "Gemini 4 Pro" would launch in October. The first Gemini 4 model arrived as Argon instead. Leaked dates for 3.5 Pro (Jul 17, Aug 12) also failed. https://www.geeky-gadgets.com/gemini-4-pro-release-date/ - [2026-10-13] Google's Cloud model-lifecycle table lists gemini-4-argon (Oct 13) and gemini-3.8-live (Sep 24) as the newest Gemini entries. It lists no Pro model newer than 2.5 Pro (which retires Oct 20), and its stub for 3.1 Pro is absent. https://docs.cloud.google.com/gemini-enterprise-agent-platform/models/model-versions - [2026-10-13] Wikipedia's infobox still lists 3.1 Pro (Feb 19, 2026) as the Pro model. It lists 3.8 Flash (Sep 2) and 3.5 Flash-Lite (Jul 21) as the latest Flash tiers. https://en.wikipedia.org/wiki/Google_Gemini BOTTOM LINE: Google has not shipped a Pro-labeled Gemini in about 8 months, and the 3.5 Pro it promised was displaced by the codename-labeled Argon, released Oct 13. A further "Pro" launch by Oct 31 would need a new, unsignaled release. The main risk is a resolver counting Argon as the "next Gemini Pro" model (via the "Pro and Ultra subscribers" wording) or a surprise 3.5/4 Pro drop. NOT FOUND: Any Google statement of a forthcoming Gemini 3.5 Pro or "Gemini 4 Pro" date. The current Polymarket price for this exact contract (deliberately not sought). Any Polymarket ruling on whether Argon counts. I could not fetch Fello AI (403).

YES means: no Google Gemini model labeled "Pro" is made publicly available between the market's creation (2026-09-22) and 2026-10-31. The 2026-10-13 Argon release would then not count as a Pro model. - [2026-10-13] The Gemini API changelog, fetched live, has an Oct 13 entry for `gemini-4-argon` as GA, described as "our most capable model." The Pro-labelled entries it carries are deprecation notices, such as the deep-research-pro-preview-12-2025 agent shutting down Oct 23. The list of new releases since Sept 22 contains Flash/TTS/image models and Argon only. This is the primary-source basis for "Argon is not Pro-labelled." https://ai.google.dev/gemini-api/docs/changelog - [2026-10-13] Google's launch post says Argon reaches "Google AI Ultra and Pro subscribers" in the Gemini app. "Pro" there is the subscription tier, and the model is named Argon. The resolution rule requires the model itself to be "labeled as 'Pro'". Argon is described in the Google docs as a "flagship reasoning model," with no Pro designation. https://blog.google/innovation-and-ai/models-and-research/gemini-models/introducing-gemini-4-argon/ - [2026-10-14] A third-party tracker (published Oct 14) found no second Gemini 4 model card after Argon. It found no Gemini 4 Pro model ID, rate card, release window, developer preview, waitlist or partner programme. Google's only forward-looking statement is that the rest of the Gemini 4 family is "still to come", with no names or dates. A Pro-labelled release before Oct 31 would therefore be unsignaled. https://www.orcarouter.ai/blog/gemini-4-pro - [2026-10-13] Google just spent its flagship launch on Argon. Argon was announced Sept 30 and opened publicly 13 days later. The 3.5 Pro label has been "coming soon" since May 19 with no model ID. Google would have to ship a second frontier model in 17 days. Its prior cadence was one Pro release in about 8 months. https://felloai.com/ultimate-gemini-model-comparison/ - [2026-10-14] Fello AI's comparison table calls 3.1 Pro (Feb 2026) "the newest model with Pro in its name." It tells readers to use Argon or 3.1 Pro, "not a 3.5 or 3.6 Pro that has not been released". Third-party trackers consistently treat Argon as a tier-less codename. https://felloai.com/ultimate-gemini-model-comparison/ - [2026-09-xx] Toloka says Google has not said how Argon relates to the existing tiers. It says "the next frontier model Google announced is not called Pro or Ultra at all". Between Feb and Sept 2026, Google shipped four Flash generations and no new GA Pro. https://toloka.ai/blog/gemini-models-explained/ - [2026-08-10] SemiAnalysis reportedly said 3.5 Pro was shelved in favour of Gemini 4. Google has not confirmed this. A Google spokesperson said only that it was "currently testing 3.5 Pro". Sept 20 geotoolbox notes the cancellation claim is unconfirmed. If 3.5 Pro was skipped, the Pro slot may be absorbed into the Argon naming. https://x.com/pankajkumar_dev/status/2086803310238167242 - [2026-10-13] The Cloud blog launch post describes Argon only as the "new frontier model," available "for everyone on Google Cloud." Nothing in it points to a Pro tier or a Pro follow-up. https://cloud.google.com/blog/products/ai-machine-learning/gemini-4-argon-available-on-google-cloud - [2026-10-14] Most likely path to YES: Google ships nothing else with "Pro" in the model name before Oct 31. The resolver reads the rules literally, as they say Flash, Flash-Lite and other non-Pro variants don't qualify. Argon, as a codename with no Pro tag, then falls outside "Pro." Gemini 3.1 Pro stays the only Pro-labelled model, and any follow-ups (Argon variants, Flash) don't qualify. BOTTOM LINE: Argon, the only new frontier release, carries no "Pro" label in any Google primary source I fetched, and no Pro-named successor has a date or model ID. Under a literal reading YES requires only that no unsignaled Pro-labelled model ships in the next 17 days. NOT FOUND: Any Google statement calling Argon a "Pro" model. Any Google date or preview for a 3.5 Pro or Gemini 4 Pro. Any official Google cancellation of 3.5 Pro. Any Polymarket ruling on whether Argon counts.

YES means: Google makes no new "Pro"-labelled Gemini model publicly available (with the Gemini 4 Argon launch not counted as one) between market open on 2026-09-22 and 2026-10-31. - [2026-10-13] The Gemini API changelog, fetched live, has one entry for the Argon launch. It reads "gemini-4-argon generally available (GA)" and describes it as "our most capable model". The entry has no Pro wording at all. Its 2026-09-02 through 2026-10-08 entries are Flash, TTS, Live, image and Antigravity models, and none is a Pro model. The 2026-10-08 notes deprecate 3.7 Flash and 3.5 Flash, and the only Pro item mentioned is a Deep Research agent being shut down. https://ai.google.dev/gemini-api/docs/changelog - [2026-10-01] Reuters, via Resultsense, says Google "no longer plans to release" 3.5 Pro and that Argon heads Gemini 4. A Google spokesperson said Argon is bigger than Google's earlier "Pro" models. That supports reading Argon as a separate, non-Pro class, and the same article says 3.5 Pro was dropped altogether. This is stronger than the Oct 3 aiwiz report that said Google had not formally cancelled it. Artificial Watch cites 9to5Google (Sep 30) for the cancellation and notes Google made no statement. https://www.resultsense.com/news/2026-10-01-google-gemini-4-argon-model/ - [2026-10-13] Engadget says that "Google was supposed to launch a 3.5 Pro model, but it moved on and released Argon instead." The Oct 13 launch is treated as the replacement for the Pro slot, not as a Pro release, and nothing is left queued behind it. https://www.engadget.com/2285023/google-gemini-4-argon-is-now-available-in-the-gemini-app-and-ai-mode-in-search/ - [2026-10-13] Artificial Analysis and press cover Argon under its codename only. Introductory API pricing is $2/$10 per million tokens until Nov 30, then double. The Google Cloud Model Garden page lists the model ID as "gemini-4-argon". None of these sources applies a "Pro" suffix to the model. Resolution needs a model "labeled as Pro", so Argon fails the label test. https://console.cloud.google.com/agent-platform/publishers/google/model-garden/gemini-4-argon - [2026-10-13] Android Police says Argon "succeeds the Gemini 3.5 Pro and Gemini 3.8 Flash models". Google AI Pro is a subscription tier. The Gemini app rollout covers Pro and Ultra subscribers. A resolver reading "Pro" literally would count the tier word as a plan name, not a model label. The model-name test therefore stays unmet. https://www.androidpolice.com/gemini-4-argon-available-pro-ultra-subscribers/ - [2026-10-01] The OrcaRouter check of Google's own site paths found `deepmind.google/models/gemini/pro/` still titled "Gemini 3.1 Pro". It found no Gemini 4 Pro page, no Gemini 4 Flash page and no Gemini 4 family page. It also found that Google's launch post names one model and no siblings. The post does not preview a Pro. There is therefore no signalled Pro successor to land before Oct 31. This is a third-party probe dated Oct 1, so Google may have changed its pages since. https://www.orcarouter.ai/blog/gemini-4-argon-tier-positioning - [2026-10-13] Rundown's comparison says the public API catalog still lists 3.8 Flash, 3.5 Flash-Lite and 3.1 Pro Preview alongside Argon. The cadence over the last 8 months has been Flash-only. Google's Sept 23 admission that it "took a little bit of a step back" to focus on Flash points the same way. https://app.therundown.ai/guides/gemini-4-argon-vs-flash-vs-pro - [2026-10-14] Deadline arithmetic: 17 days remain (Oct 14 to 31). The window has no scheduled Google event. The Argon launch was just completed on Oct 13, and Google's focus after a flagship launch is rollout (free tier, AI Plus, Search). Google has not shipped a Pro-labelled model in about 8 months, since 3.1 Pro on 2026-02-19. A "3.1 Pro GA" promotion is not suggested by anything found; the 3.1 Pro entry has no shutdown date and no GA notice. https://ai.google.dev/gemini-api/docs/changelog - [2026-10-13] A mechanism that favors NO: Google's top-tier release was explicitly renamed away from "Pro" (the first Gemini with a codename, per the Sep 30 trade press already noted). Any Gemini 4 sibling could carry another codename, and Flash tiers explicitly don't qualify. Only an unforeshadowed "Pro" label, or a rename of Argon itself, would resolve YES. The only open question is whether Polymarket resolves on the label or on Argon's flagship status. BOTTOM LINE: The release of Argon and the cancellation of 3.5 Pro mean no Pro-labelled model is queued or signalled for the next 17 days. That leaves the title's "no next Gemini Pro" outcome as the status quo unless the resolver counts Argon as the Pro successor. NOT FOUND: Any Google statement of a Gemini 4 Pro, a revived 3.5 Pro, or a 3.1 Pro GA date. Any Polymarket ruling or clarification on whether Argon counts. Google's primary Argon launch post and the Gemini app release notes, which I did not fetch. Any scheduled Google event before Oct 31.