Will Google be the second-best AI lab at the end of October 2026?

I could not read the resolution page. Arena's page returned a bot challenge and then HTTP 403, so every leaderboard figure below comes from secondary sources. I did not find the "Labs" view's Lab Rank column in any source. - [2026-10-12] A Kucoin digest of Arena's weekly update says gemini-4-argon-high (Google) still holds #1 overall in Text at 1,525. It says claude-opus-5.5-high rose two places to second at 1,507, and is statistically tied with third-place claude-opus-4-6-high . It also says Anthropic models occupy four of the top five spots . https://www.kucoin.com/news/flash/arena-ai-model-rankings-claude-opus-5-5-max-debuts-at-top-chinese-models-maintain-mid-to-top-positions - [2026-10-02] A Manifold market's creation note describes the Oct 2 board. #1 was gemini-4-argon-high (Google) at 1525 ±9 on about 4.9k votes, with the next five all Anthropic models at 1501–1505. The note also says the best OpenAI model was gpt-5.6-sol-xhigh at #20 (1484) . The best xAI model was #36. https://manifold.markets/Terminator2/which-company-will-have-the-1-model - [2026-10-02, same source] The Manifold creator expects Argon's score to drift down as votes accumulate. Its own odds were Google 50%, Anthropic 32%, OpenAI 13%, xAI 3% for the #1 model. The market price was about 86% Google. These are model-level #1 odds, not lab-rank #2. https://manifold.markets/Terminator2/which-company-will-have-the-1-model - [2026-09-30] Google launched Gemini 4 Argon and Arena listed it first in Text. Arena's Sept 30 snapshot had Argon High first at 1,525 ±9 on 4,942 votes . The score was marked Preliminary. https://kingy.ai/blog/frontier-ai-models-gemini-4-argon-gpt-6-astra-sol-claude/ - [2026-10 (undated)] One discussion citing Arena's CEO said Argon fell from first overall text to seventh among experts and tenth on agentic tasks. This is secondhand and refers to other Arena views, not the overall Text board. https://kie.ai/blog/gemini-4-argon-vs-claude-opus-5-5 - [2026-10 (undated)] A roundup says GPT-6 Sol sits at #67 on Arena Text at 1455.9. It gives Opus 5.5 as second at 1507.1. Its statement that Gemini 4 Argon leads is also in the same roundup. OpenAI is not near the top of Text. https://felloai.com/best-ai-models/ - [2026-10-06] The Arena changelog lists claude-sonnet-5.5-xhigh as added to the Text Arena. Claude Haiku 5.5 was reported released on Oct 7. https://news.lmarena.ai/leaderboard-changelog/ - [2026-09-27] The changelog added gpt-6-sol-max, gpt-6-luna-max, grok-4.7-xhigh, deepseek-v4.1-flash-max and claude-opus-5.5-high to the Text Arena. That is the list as written in the changelog. https://arena.ai/company/leaderboard-changelog - [2026-09-01] Anthropic released Claude Fable 5.1 and Mythos 5.1. Fable 5.1 is the generally available twin. On Sept 13 it scored 1498 in Text, on only 5.8k votes. https://aibusiness.vc/models - [2026-10-12] Arena's Text board had the leader at about 1525 and Anthropic models at about 1501–1507. A secondary Arena-score source reported on Oct 12 that the llm-stats page was last updated in October 2026 , but its content looked stale (it listed only Grok-4.1). Disregard it. https://llm-stats.com/benchmarks/lmarena-text - [2026-07-21] Gemini 3.6 Flash entered the Text Arena at #12 with 1485. Google's other models are well below Argon. https://x.com/arena/status/2079594271045455947?lang=en - No scheduled release before Oct 31 was confirmed. Manifold's creator names GPT-6/6.1 or a new Claude release as the things to watch. https://manifold.markets/Terminator2/which-company-will-have-the-1-model BOTTOM LINE: As of about Oct 12, Google is #1 in Text at 1525 and Anthropic is #2 at about 1507. The 18-point gap sits on a preliminary score from about 5k votes, and Anthropic has several models clustered around 1500. Google would be second if Argon slipped below Anthropic's best model, or if a new model overtook Google. If the lab ranking uses best model per lab, that is the only route to Yes. NOT FOUND: The live Labs-view Lab Rank table (403). The ordering of labs beyond Google and Anthropic. Any confirmed release dates before Oct 31 for GPT-6.x, Gemini 4 variants, Claude or Grok that would be listed on Arena Text.

- [2026-10-08] The arena.ai Labs table (28 labs, 8.73M votes) has Google at lab rank 1 (gemini-4-argon-high, 1525±9, tagged "Preliminary"). Anthropic is lab rank 2 (claude-opus-5.5-high, 1507±8). Meta is 3rd (1494), Moonshot 4th (1488) and OpenAI 5th (1485). So Google is currently first, not second. The question needs Google to fall below Anthropic, or below another lab. Note this page was fetched without the "overall-no-style-control" URL path, so it is the default view and may use style control. https://arena.ai/leaderboard/chat/text?rankBy=labs - [2026-10-02] A Manifold market describes the Oct 2 board the same way. Gemini-4-argon-high is #1 at 1525 on only about 4.9k votes. The next five models are all Anthropic, at 1501–1505. The best OpenAI model is #20 and GPT-6 is not yet listed. A new, low-vote entry like Gemini 4 can drift as votes accumulate. https://manifold.markets/Terminator2/which-company-will-have-the-1-model - [2026-10-13] Polymarket's sibling market "best AI model end of October" had Google at about 70% and Anthropic at about 29% (Kalshi has a similar market). Google at #2 therefore mostly means Google losing #1 to Anthropic. A third lab overtaking both is unlikely given the 18-point gap to Meta. https://defirate.com/odds/best-ai-model/ - [2026-10-13] A Seeking Alpha report on Polymarket odds for the best model at the end of October says Google is about 70%, Anthropic 23% and OpenAI under 1%. It also says Meta rose after a "Muse Wonder" launch. https://seekingalpha.com/news/4652226-google-holds-big-lead-over-anthropic-meta-openai-in-race-for-best-october-ai-model (search snippet only; page not accessible) - [2026-10-13] A Polymarket "Best AI model on Oct 26" market has gemini-4-argon-high at about 68–70% and claude-opus-5.5-high at about 16%. Claude-fable-5.1-max is about 9%, and "Other" is 20–27%. It notes no major releases are expected before Oct 26. https://polymarket.com/event/best-ai-model-on-october-26/will-any-other-model-be-the-best-ai-model-on-october-26-2026 - [2026-10-13] For the year-end 2026 "best model" market, Anthropic is about 56–63% and Google about 37%. The longer horizon favours Anthropic, but the end-of-October market favours Google. https://defirate.com/prediction-markets/best-ai-model-odds-this-year/ - [2026-10-06] A benchmark-history aggregator's snapshot of the Arena dataset (taken about Sept 2026, probably style-control boards) had Anthropic models at #1–5 and Google's best at #6 (gemini-3.7-flash-high, 1491). Anthropic led through Aug–Sept; Google's Gemini 4 lead is recent. https://benchlm.ai/llm-leaderboard-history - [2026-10-12] Historical base rate for the #1 spot, in months at #1 since May 2023: OpenAI 15 of 41 (37%), Anthropic 9 (22%), Google 8 (20%). The crown changed hands 19 times in 41 months. That is about one change every 2 months, so a change in a given 3-week window is a minority outcome. https://benchlm.ai/llm-leaderboard-history - [2026-08] In early 2026 Anthropic led the text board (Opus 4.6 about 1502–1506), with Google's Gemini 3 Pro and 3.1 Pro at about 1486–1493. Anthropic has been Google's closest rival at the top for most of 2026. https://www.codesota.com/arena/text - [2025-10-31] A prior Polymarket "second best AI model end of October" market (2025) resolved to Alibaba, not a big-name lab. That shows the #2 slot can resolve to an unexpected lab when the rule is ambiguous. Whether it counted models or labs is unknown. That version used the old model-level rule; the current Labs ranking rule is different. https://polymarket.com/event/which-company-has-second-best-ai-model-end-of-october - [2026-10-08] The Google–Anthropic gap on the Labs table is 18 points, with ±9 and ±8 confidence intervals. The Google score is marked "Preliminary" and is based on few votes. https://arena.ai/leaderboard/chat/text?rankBy=labs BOTTOM LINE: As of Oct 8, Google is lab #1 and Anthropic is #2, so "Google second" needs a reversal in the next 18 days. Reversal paths are Gemini 4's preliminary score regressing below Anthropic's, an Anthropic or other new release, or Gemini 4 being delisted or flagged. Sibling-market pricing of about 70% Google #1 and about 29% Anthropic #1 sets the rough outside view. In the Labs ranking, Google at #2 mostly means Anthropic at #1, since no third lab is close. NOT FOUND: The exact live price of this contract (deliberately not searched). A fetch of the specified "overall-no-style-control" URL, which was blocked by a Cloudflare check. The Arena changelog and any announcement of upcoming releases (GPT-6, Claude or Gemini updates) before Oct 31. Historical records of Labs-ranking #2 outcomes, because the Labs view appears to be recent.

YES means: On Oct 31, 2026 at 12:00 PM ET, Google is lab rank #2 on the arena.ai Text Arena (Overall, style control off, Labs filter). Google is currently #1, so this requires Google to fall behind exactly one lab, and the only credible lab is Anthropic. - [2026-09-26] Claude Opus 5.5 (High) debuted at #1 in Text with 1509 ±12. Anthropic held the top six spots, and Opus 4.6 High was 4 points behind. Anthropic was the Text leader until Gemini 4 Argon arrived on Sept 30, so Google's lead is only about two weeks old. Source: https://cryptobriefing.com/claude-opus-5-5-text-arena-number-one/ and Arena's own post https://x.com/arena/status/2103893011164017018 - [2026-10-12] The weekly Arena digest (fetched) says Anthropic holds four of the top five overall spots. Opus 5.5 High is at 1,507, which is 18 points behind Argon. It is also described as statistically tied with the third-placed Opus 4.6 High. The digest says the new-model score shown is not yet final. https://www.kucoin.com/news/flash/arena-ai-model-rankings-claude-opus-5-5-max-debuts-at-top-chinese-models-maintain-mid-to-top-positions - [2026-10-12] The same digest shows Anthropic's lower-ranked Text scores have been drifting up. Opus 5.5 High rose two places that week. Its Code score reached 1550, up seven places. Anthropic's best Text model is therefore still gaining votes while Argon is flat at 1,525. https://www.kucoin.com/news/flash/arena-ai-model-rankings-claude-opus-5-5-max-debuts-at-top-chinese-models-maintain-mid-to-top-positions - [2026-10-08] A comparison page's Oct 8 snapshot has Argon at 1525, marked preliminary, on 4,892 votes, versus 4,942 votes on Sept 30. Votes fell slightly while the score held. It does not look like a score that has stabilised. A new model's preliminary score can regress, and an 18-point gap is under 2x Argon's ±9 interval. https://www.foma.news/p/gemini-4-argon-vs-claude-opus-5-5 (search snippet; page not fetchable) - [2026-10-12] Third-party results do not favour Argon. Arena's own agent board has Opus 5.5 Max at #1 and Argon High eighth. On Artificial Analysis, Opus 5.5 scores 58 and Argon 53. A secondhand report cites Arena's CEO saying Argon drops to seventh among experts. Anthropic's best-liked model therefore has a broader base of support than Argon, and the Text gap may close as more voters join. https://kie.ai/blog/gemini-4-argon-vs-claude-opus-5-5 and https://apidog.com/blog/gemini-4-argon-vs-gpt-6-astra-vs-claude-opus-5-5/ - [2026-10-07] Anthropic is releasing quickly. Opus 5.5 came Sept 22, Sonnet 5.5 Sept 28 and Haiku 5.5 Oct 7. Its Fable 5.1 and Mythos 5.1 tier sits above these. A further Anthropic model in the last 3 weeks of October would add another entry above 1507. I found no announced date for one. https://9to5mac.com/2026/10/07/anthropic-upgrades-claude-with-new-haiku-5-5-model-details-here/ - [2026-10-12] Meta released Muse Wonder on Oct 12. Its Artificial Analysis score is 56 (Full) and 52 (standard), against Opus 5.5 at 58 and Argon at 53. This is a third-lab threat to Google's slot. I found no Arena Text score for it yet. Meta was already third on the Labs table (1494). So Meta overtaking Google is only a remote route, but it would also produce a YES. https://artificialanalysis.ai/articles/muse-wonder - [2026-10-12] Access is limited. Per The Rundown, Gemini 4 Argon is initially limited to vetted cybersecurity users. Apidog notes that you can buy Opus 5.5 but not Argon. If Google adds a wider release, or changes or re-lists the Argon entry on Arena, its preliminary entry could be re-rated, and Arena has not said so. https://www.therundown.ai/news/google-gemini-4-argon-benchmarks-limited-rollout - [2026-10-12] Resolution mechanics help Anthropic if Google loses #1. Anthropic has several 1,500+ models, and Google's next-best Text models are far below Argon. Google would still be second if Argon fell below Anthropic's top model, because Google's next-best score is about 1485 (Gemini 3.6 Flash, July). That is also why there is no scenario where Google drops below #2 once Anthropic passes it, short of a third lab leaping past it. https://www.kucoin.com/news/flash/arena-ai-model-rankings-claude-opus-5-5-max-debuts-at-top-chinese-models-maintain-mid-to-top-positions BOTTOM LINE: The single path to YES is Argon's preliminary 1525 regressing below Anthropic's Opus 5.5 High (about 1507 and rising) or a new Anthropic model overtaking it, with Google staying ahead of every other lab. Both need an 18-point swing in 18 days against a score that has held steady, so this is a minority-probability outcome. NOT FOUND: The live Labs-view Lab Rank table for the exact resolution URL (Arena blocks access). Any dated Claude, GPT or Gemini release before Oct 31. A Meta Muse Wonder Arena Text score. Any record of Argon's score trend after Oct 8.

YES means: Google holds the second-highest Lab Rank on arena.ai Text Arena (Overall, style control off, Labs filter) at the 12:00 PM ET check on Oct 31, 2026. - [2026-10-13] The Polymarket "second-best AI lab" page for this market shows Anthropic at about 67–69% and Google at about 25–26%. The traders' text attributes Anthropic's lead to the late-September Opus 5.5 and Sonnet 5.5 releases. The fetched copy of the page was an older Sept 24 snapshot (Google 54%, Meta 33%, Anthropic 8%), so the market has swung hard toward Anthropic since then. That shift matches Argon's #1 listing on Sept 30. https://polymarket.com/event/second-best-ai-lab-end-of-october - [2026-10-12] Status quo means NO. Anthropic holds Lab #2 behind Google's Argon (earlier reports). Google gets to #2 only if Argon falls below Anthropic's best model, which is a reversal. A secondary index on Oct 12 had Anthropic's best (Fable 5 at 1506, Opus 5.5 at 1504, Fable 5.1 at 1501) clustered within about 5 points. Google's best non-Argon entries sit at 1494 or lower (Gemini 3.8 Flash, 1494). So Google's fallback if Argon slips is #2 only if Anthropic also rises. https://anotherwrapper.com/tools/llm-pricing/evals/arena-text-elo - [2026-09-30] Arena's own post says Argon (High) is +20 over the #2 model, and ranks #1 in Coding, Hard Prompts, Instruction Following and Creative Writing, among other categories. A lead that broad is less likely to vanish through noise. That cuts against a quick drop to #2. It does not help the NO case. https://x.com/arena/status/2105394855644139908 - [2026-10-08] Argon's 1525 was still listed as #1 on Oct 8 (hokai.io, citing a 2 Oct snapshot of 4,932 votes). The preliminary tag and the drift of new models toward the mean are the main routes to Yes. A fall of about 18–20 points would be needed. Typical drift is smaller, though I found no data on Arena drift sizes. https://hokai.io/hub/models/gemini-4-argon - [2026-10-13] A third lab is a distinct Yes route. Meta rose in the best-model market after "Muse Wonder." Meta's Muse Spark 1.2 was about 1498 on Oct 12, ahead of every Google model except Argon. That makes Meta, not just Anthropic, a possible second behind Anthropic. If Meta (or Anthropic) took #1 and the other took #2, Google would be third or lower. https://seekingalpha.com/news/4652226-google-holds-big-lead-over-anthropic-meta-openai-in-race-for-best-october-ai-model - [2026-10-13] The best-model market (sibling) has Google about 70% and Anthropic about 29%. The Oct 26 snapshot market has Argon about 68% and "Other" 20–27%, which signals some risk of an unlisted new model. For this question, Google is #2 only if Google loses #1, since no third lab is close. https://polymarket.com/event/best-ai-model-on-october-26/will-any-other-model-be-the-best-ai-model-on-october-26-2026 - [2026-10-12] Release pipeline: Opus 5.5 and GPT-6 Sol/Luna launched on Sept 22. Gemini 4 Pro was rumoured for October (Geeky Gadgets, Sept 20; low-quality source). Argon itself is limited-access via Google's Fairwind program (Google, Sept 30). A new Google release could add a stronger Google model, which would help Google stay #1 and so hurt Yes. Nothing confirmed was found. https://www.geeky-gadgets.com/gemini-4-pro-release-date/ - [2026-10-13] A sibling "second-best Text Arena Math lab" market (about Sept 5 in the snippet) had Google at 64% and called Google the consistent #2 behind Anthropic. That was before Argon, so it is stale. It also shows Google was #2 in other Arena views when Anthropic led overall. That favours a Google-#2 outcome if Anthropic retakes #1, and it is not NO-supportive. https://polymarket.com/event/second-best-text-arena-math-ai-lab-end-of-october - [2026-10-12] Resolution technicality in favour of NO: ties are broken by Arena score, then alphabetically, where Google would win. That helps Yes only in an exact tie, which is vanishingly unlikely. The "AutoEval" exclusion could delist a preliminary Argon score. If so, Google would be ranked by its next-best model (about 1494) and likely fall to #3 or lower (behind Anthropic and Meta). That is a route to NO as well. I found no evidence that Argon is marked AutoEval. https://polymarket.com/event/second-best-ai-lab-end-of-october - [2026-10-12] The leaderboard is "no style control", and my colleagues' Labs table was fetched from a different URL. Rankings can differ between the two views. I could not verify the exact resolution view. Anthropic's lead is likely larger or equal without style control, but that is unconfirmed. https://anotherwrapper.com/tools/llm-pricing/evals/arena-text-elo BOTTOM LINE: The case for NO is that Google is #1 and Anthropic is #2, with a 18–20 point gap, broad category leads, and a roughly 70/30 Google/Anthropic split for #1. Yes needs Argon to be overtaken, and Google then has to land at #2 with no third lab ahead of it. Delisting of Argon or a Meta or Anthropic surge would also push Google below #2. NOT FOUND: The live Labs-view Lab Rank table at the specified URL (blocked). Any confirmed release date before Oct 31 for Gemini 4 Pro, GPT-6.x, a Claude model or Meta Muse. Historical data on how much preliminary Arena scores drift in the first 3 weeks.