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

- [2026-10-12] The resolution page, rendered live, shows a Labs table dated Oct 8, 2026 (704,232 votes, 27 labs). It ranks #1 Google (gemini-4-argon-high, 1536±35, tagged "Preliminary", model rank 1), #2 Anthropic (claude-opus-5-high, 1531±12, model rank 2), and #3 Z.ai (glm-5.3-flash, 1500, model rank 14). Google is #1 and Anthropic is #2, so on this snapshot Google is not second. https://arena.ai/leaderboard/text/math-no-style-control?rankBy=labs - [2026-10-12] The gap between Google and Anthropic is 5 points, and the confidence bands overlap (±35 vs ±12). Rank Spread is 1–24 for Google and 1–15 for Anthropic. Google's score is marked Preliminary, so it can still move as votes accumulate. The Z.ai/Alibaba tier sits about 31–37 points below Anthropic, so a third lab is unlikely to take #2 without a new release. Same URL. - [2026-10-12] OpenAI's best entry in the Math Labs table is gpt-5.4-high at 1488 (lab rank 9, model rank 24). No GPT-6 model appears there yet. Same URL. - [2026-10-02] On the overall Text board, gemini-4-argon-high led at 1525 ±9 on about 4.9k votes. The next five entries were Anthropic models at 1501–1505. OpenAI's best, gpt-5.6-sol-xhigh, was #20. The Manifold creator noted new-model scores tend to drift down as votes accumulate. This is the overall board, not Math. https://manifold.markets/Terminator2/which-company-will-have-the-1-model - [2026-10-07] OpenAI began rolling out GPT-6 Sol and Luna in ChatGPT to everyone. Astra launched on 2026-09-03, and Sol and Luna followed on 2026-09-22. Per OpenAI's own page, GPT-6 Sol and Luna were released on September 22. https://openai.com/research/index/release/ - [2026-10-08] GPT-6 models (Astra, Sol, Luna) were not on the Math Labs board as of the Oct 8 snapshot. Any later addition would be a risk to Google's and Anthropic's positions. They released in September but are absent from the board, which may be a lag or a sign they are listed under different names. I could not confirm which. Source: arena.ai table above. - [2026-10-12] A third-party tracker (benchlm.ai, published about 39 days ago, so around early September) listed claude-fable-5 as the Arena math leader at 1530. Claude has led or been near the top of Math for much of 2026. https://benchlm.ai/llm-leaderboard-history - [2026-07-21] Gemini 3.6 Flash entered the Text Arena at #12 overall. Arena reported it #4 in the Occupational mathematics category. Google's Flash models are also in the Math view; gemini-3.5-flash-high was ranked 7th in a Math snapshot of unknown date. https://x.com/arena/status/2079594271045455947?lang=en - [2026-03] Arena introduced "AutoEval" model labels in March 2026. Models marked AutoEval at check time are excluded from the resolution. I did not see any AutoEval tags on the top Math rows on Oct 8. https://arena.ai/blog/march-2026-arena-updates - [2026-10-31] The check is at 12:00 PM ET on Oct 31. I found no scheduled event between now and then, such as a known Gemini, Claude or GPT-6 listing date. Arena publishes models at irregular intervals. BOTTOM LINE: As of the Oct 8 snapshot, Google is #1 and Anthropic is #2 in the Math Labs ranking, so "Google second" is currently not the case. It would need Anthropic to overtake Google, or a new entrant (OpenAI GPT-6 is the obvious candidate) to land above Google. The 5-point gap and the Preliminary tag on Google's score keep a swap plausible. NOT FOUND: Any Arena listing of GPT-6 Astra/Sol/Luna on the Math board. Any announced date for new Gemini or Claude model additions before Oct 31. A Polymarket-specific history of this market's resolution.

- [2026-10-12] The Arena Math "Labs" board (style control off) currently has Google #1 (gemini-4-argon-high, 1536±35, rank spread 1–24). Anthropic is #2 (claude-opus-5-high, 1531±12, spread 1–15). Z.ai is #3 at 1500. The Google–Anthropic gap is 5 points and the confidence intervals overlap heavily, so the #1/#2 order could flip. If Anthropic overtakes Google, Google becomes #2, which is the YES case. https://arena.ai/leaderboard/text/math-no-style-control?rankBy=labs - [2026-10-12] Third-best Math market, sibling contract: Z.ai 46.7%, Meta 25%, Alibaba 13%, Google 8%, Anthropic 4%. Its page text says Google and Anthropic hold the top two spots, so the market treats those two as near-certain. Google at #3 would only happen if two labs passed it. https://polymarket.com/event/third-best-text-arena-math-ai-lab-end-of-october - [2026-10-11] Polymarket's related-market panel showed "Google second-best Math" at 47% and "Anthropic second-best (overall text)" at 69%. This is the contract's own price, which I was told not to rely on. https://polymarket.com/event/third-best-text-arena-math-ai-lab-end-of-october - [2026-10-08] Sibling market, overall text second-best (style control on), about 4 days old when seen: Anthropic 65–69%, Google 25–26%, Meta ~3–9%. In overall text, Google is the challenger for #2, not the leader. https://polymarket.com/event/second-best-ai-lab-end-of-october - [2026-10-02] Overall text board: gemini-4-argon-high was #1 at 1525±9 on only about 4.9k votes. The next five were all Anthropic at 1501–1505. The best OpenAI model was #20. Manifold's creator said new-model scores usually drift down as votes accumulate, and that Argon could lose 15+ points. Manifold priced Google at 86% for #1 overall. https://manifold.markets/Terminator2/which-company-will-have-the-1-model - [2026-10-02] Base-rate evidence on volatility: in the Math board, Gemini 3 Pro took #1 in February 2026 (1484), with Gemini 3 Flash second. OpenAI and Anthropic were close behind. The top spots in Math have changed hands repeatedly. https://kearai.com/leaderboard/math - [2026-09] BenchLM, which reads Arena data, says the Math category leader changed 17 times across 21 monthly snapshots. That implies frequent top-slot turnover in the reference class. Its current math leader is claude-fable-5 at 1530. This conflicts with the live board above, where Fable is not the listed Anthropic top model. https://benchlm.ai/llm-leaderboard-history - [2026-10-12] Lab Rank is one row per lab, so each lab is represented by its best model. Google's lead rests on one new, high-variance model (±35). Anthropic's model has a tighter interval (±12). New-model scores typically settle toward the mean, so Argon's 1536 could fall below Anthropic's 1531. A Google decline would put Google at #2. A new Anthropic release (Haiku 5.5 was reported Oct 7) or a GPT-6 listing could also change the order. https://arena.ai/leaderboard/text/math-no-style-control?rankBy=labs - [2026-08-22] Earlier pricing of the overall "second-best lab" market was Google 17% to Anthropic 66%. Odds have since moved only modestly. https://www.lines.com/prediction-markets/tech/second-best-ai-lab-end-of-october BOTTOM LINE: The question comes down to whether Google stays #1 or drops to #2 behind Anthropic. A third lab overtaking both looks unlikely (about 8% for Google at #3 in the sibling market). The 5-point gap with overlapping error bars and the history of Math leaders changing often suggest a real chance of a flip, with Google's high-variance new model the main uncertainty. NOT FOUND: Resolved outcomes of earlier months' Math second-best markets (for example the September edition). Daily history of the Math Lab Rank. Any expert forecast specific to the Math board.

YES means: On the arena.ai Text Arena (Math) Labs table (style control off), checked 12:00 PM ET on Oct 31, 2026, Google holds Lab Rank #2. Google must sit below exactly one lab, and AutoEval-tagged models don't count. - [2026-10-12] A fresh render of the resolution table matches the Oct 8 snapshot. Anthropic's listed entry is claude-opus-5-high (1531±12). The Opus 5.5, Fable 5/5.1 and GPT-6 models are not in the Math Labs table. The next lab, Z.ai, is at 1500, so a third lab is 31+ points behind Anthropic and 36 behind Google. https://arena.ai/leaderboard/text/math-no-style-control?rankBy=labs - [2026-10-12] The Arena changelog says claude-opus-5.5-high, gpt-6-sol-max, gpt-6-luna-max, grok-4.7-xhigh and deepseek-v4.1-flash-max were added to the Text Arena on Sep 25. Muse Spark 1.3 was added Sep 13, and gpt-6-astra-max on Sep 11. Claude Sonnet 5.5 (xhigh) went on the Text Arena on Oct 2 and mistral-large-4 on Oct 8. None of these appear in the Math Labs table, so it is not an obvious mirror of the main Text board. Anthropic's newer models, Opus 5.5 and Fable 5.1 with Sonnet 5.5, could still show up in Math and lift Anthropic above Argon. https://arena.ai/company/leaderboard-changelog - [2026-09-26] Arena said Opus 5.5 (High) debuted at #1 in overall Text at 1509, 18 points above Opus 5 (High). Opus 5 is the model currently representing Anthropic in Math at 1531. If Math is refreshed with Opus 5.5, an 18-point gain would put Anthropic roughly 15 points above Argon's 1536. This is an inference, not a confirmed Math score. https://x.com/arena/status/2103893011164017018 - [2026-10-02] On Sep 30 Arena called Argon's Text #1 preliminary, on 4,942 votes. The orcarouter write-up of Oct 10 says Argon still carries the preliminary marker. Argon's Math band is ±35 against ±12 for Opus 5. Its Math rank spread of 1–24 means a low-end Math rating is plausible. https://www.therundown.ai/news/google-gemini-4-argon-benchmarks-limited-rollout - [2026-10-10] A write-up citing Arena's CEO says Argon fell from first overall to seventh among experts and tenth on agentic tasks. In Agent Arena it ranked 8th (rank range 3–16) on about 3.4k sessions. Math prompts are expert-type work, so the weakening in expert slices points toward Argon's Math score drifting down. https://kie.ai/blog/gemini-4-argon-vs-claude-opus-5-5 - [2026-10-01] Google's own Math-adjacent claims are mixed. The R&D World comparison shows Argon beating Opus 5.5 on LABBench2 and RiemannBench. It trails GPT-6 Astra on Terminal-Bench Science and sits below Opus 5.5 on the AA Intelligence Index (53 vs 58). So Argon is not a decisive Math leader in independent measures. https://www.rdworldonline.com/googles-overdue-gemini-4-argon-reaches-the-frontier-with-mixed-results-for-science/ - [2026-10-12] This path keeps Google at #2 rather than letting it fall. Google needs to stay above Z.ai at 1500 and Alibaba at 1499. Argon would have to drop 36+ points to lose that, and the Gemini Flash line is a fallback Google entry. The prelim band (±35) is wide, but the Google-#3 case needs a second lab to pass it. https://arena.ai/leaderboard/text/math-no-style-control?rankBy=labs - [2026-10-08] A second YES path exists. If OpenAI's GPT-6 Sol/Luna/Astra, or any other lab, is added above Argon while Anthropic is not ahead of Google, Google would also be #2. Today OpenAI's listed entry, gpt-5.4-high, is 48 points behind Google, so this needs a jump from the GPT-6 family. Nothing confirms a Math listing date. Source: the Arena changelog showing GPT-6 in the Text Arena since Sep 25. https://arena.ai/company/leaderboard-changelog - [2026-10-10] Anthropic holds the top six overall Text spots (Opus 5.5 at 1507, per the Fello AI tracker). That indicates a deep Anthropic bench for the Math view. The Opus 5.5 listing includes a ±12 band, so Anthropic's top Math entry is likely to be well-measured when it arrives. https://felloai.com/best-ai-models/ - [2026-10-12] There are no scheduled events before Oct 31. The Oct 8–9 changelog entries were Vision/Text additions only, with no Gemini additions. Argon only entered Arena on Sep 30, with limited Fairwind access, which means Google's Math vote count should still be growing. A general release could add many more votes. https://www.orcarouter.ai/blog/gemini-4-release-date BOTTOM LINE: The strongest YES case is that the Math board's Anthropic row (Opus 5, 1531±12) is stale relative to Opus 5.5, which beat Opus 5 by 18 points in overall Text. Google's preliminary Argon score (±35) has more room to fall than Anthropic's, so Anthropic overtakes it while Google stays well above the ~1500 third tier. Google also reaches #2 if a new entrant such as GPT-6 outranks it, but no source confirms that. NOT FOUND: Any Math-specific score for Opus 5.5, Fable 5.1 or GPT-6 on Arena. A scheduled date for Math-board updates. Any historical record of how Argon's Math score has moved since the Sep 30 debut.

YES means: On the Oct 31, 2026 12:00 PM ET check of the arena.ai Text Arena (Math) "Labs" table with style control off, Google is ranked #2. Any other lab at #2 resolves NO, including Google at #1. - [2026-10-12] I re-rendered the resolution page. Google is #1 (gemini-4-argon-high, 1536±35) and Anthropic is #2 (claude-opus-5-high, 1531±12). Google is also model-rank 1 overall in Math, so the "Models"-view fallback does not help YES. Third place is Z.ai at 1500, 31+ points behind Anthropic. The status quo is Google #1, which is NO. https://arena.ai/leaderboard/text/math-no-style-control?rankBy=labs - [2026-10-08] Fello AI says Arena ranked Argon first on text, creative writing and math within a day of launch. Its Math lead is therefore a launch-time result and not a one-snapshot fluke. The page also says Argon gets only limited access (vetted Fairwind cyber teams). That limits how much new vote traffic it takes. Vote-driven drift therefore comes mostly from Arena's own battle sampling. https://felloai.com/best-ai-models/ - [2026-10-02] Arena put Argon at 1525 on 4,942 votes. Arena marked it preliminary, and it ranked #1 on the overall text board 20 points above the #2 model. The overall-text margin was larger than the 5-point Math margin. Argon also leads every occupational domain and ranks #1 on Hard Prompts. Hard Prompts is the category closest to Math. https://x.com/arena/status/2105394855644139908 - [2026-10-08] Argon's Math lead has a large buffer against Anthropic's tighter score. The overall text board shows Argon at ~1525 and Claude Opus 5.5 at ~1507. Opus 5.5 is Anthropic's newest flagship, and it has no row on the Math board I rendered. A Math listing for Opus 5.5 would likely land near that 18-point text deficit. That would still leave Google ahead. Anthropic's current Math entry is the older Opus 5. https://felloai.com/best-ai-models/ - [2026-10-10] Anthropic's cadence points away from a surprise flip before Oct 31. Opus 5.5 shipped Sep 22, Sonnet 5.5 Sep 28 and Haiku 5.5 Oct 7, so the 5.5 family is complete. Arena has rated Haiku 5.5 only on WebDev. A further flagship is not announced in the sources I found. https://felloai.com/best-ai-models/ - [2026-10-12] OpenAI is not a #1 or #2 threat in Math. Its best listed Math entry is gpt-5.4-high at 1488. GPT-6.1 Sol was listed Sep 29 with a third-party-tracked text score of ~1446, about 88 points behind Argon. Arena's GPT-6 posts so far cover Agent and Code Arena. OpenAI's GPT-6.1 Astra was reported cancelled for October. https://17nas.com/llm-model.php?id=openai%2Fgpt-6.1-sol&lang=en-US - [2026-10-08] Fello AI reports the WSJ saw OpenAI's October release (GPT-6.1 Astra) cancelled after internal safety tests. That removes the one plausible third-party leapfrog. A new entrant above Google would send Google to #2 and resolve YES, but not toward NO. A NO path therefore needs Google to hold #1 or to fall to #3 or lower, and the sibling third-place market gives that only ~8% (colleague report). https://felloai.com/best-ai-models/ - [2026-10-12] The "preliminary" tag and the ±35 band are the main YES risk, but the tag has not tracked actual changes of rank. Arena's own Argon posts said the Agent Arena score was preliminary on ~3k sessions and the text score on ~4.9k votes. The Math board shows the 1536 score on a wider band than the overall board. Ranks use confidence intervals and sit on a Rank Spread of 1–24. The Lab Rank view still orders by point score. Any drift would need to exceed 5 points net. https://arena.ai/leaderboard/text/math-no-style-control?rankBy=labs - [2026-10-12] There is little time for Argon to drift. About 19 days remain from Oct 12 to Oct 31, and the board is a rolling aggregate. A board with 704k Math votes (Oct 8 snapshot, colleague report) takes new-model votes slowly. A change from 1536 to <1531 would be a late move of about 5 points on an unchanged model. https://arena.ai/leaderboard/text/math-no-style-control?rankBy=labs - [2026-10-11] Skeptical third-party reports exist, so I give them no weight for Math. Bloomberg reported (via Medium, Google disputed it) that employees saw weaker real-world work and some weaker front-end coding. Argon is only #8 in Code Arena WebDev and #8 in Agent Arena. Those are coding and agent boards, not Math or text. A kie.ai summary says an Arena CEO discussion had Argon dropping to #7 among experts, but I could not verify that. https://medium.com/@sohamnayak04/gemini-4-argon-benchmarks-what-people-are-building-and-what-theyre-saying-dc9281499b5b - [2026-10-12] The tie-break rules favor Google. A Lab Rank tie would go to Arena score and then alphabetical order. "Google" is listed ahead of Anthropic alphabetically on a final tie. The AutoEval exclusion does not obviously affect the top two. Neither top row is marked AutoEval in my render. https://arena.ai/leaderboard/text/math-no-style-control?rankBy=labs BOTTOM LINE: The NO case is status quo. Google is #1 on the live resolution table with a bigger text-board cushion, so it must slip below Anthropic by Oct 31 to resolve YES. OpenAI's October flagship is reportedly cancelled and Anthropic's 5.5 family is already out, which leaves little room for a new entrant. The main caveats are the 5-point Math gap and the wide ±35 band on a preliminary score. NOT FOUND: Any Math-board listing for Claude Opus 5.5, Sonnet 5.5, GPT-6 Astra, or GPT-6.1 Sol. A dated history of the Math Lab Rank since Oct 1. Confirmation of the "Arena CEO" #7-among-experts claim. A scheduled Arena or Gemini 4 update before Oct 31.