Trader consensus on Polymarket strongly favors Anthropic with an 85.5% implied probability for having the top AI model by May 31, driven by Claude Opus 4.7's dominant performance across Arena.ai leaderboards—formerly LMSYS Chatbot Arena—following Anthropic's recent Dev Day releases. The model leads in text, coding, domain-specific (e.g., gaming, simulations), and overall rankings, outpacing rivals by wide margins in crowdsourced battles, as updated May 8–12. Google DeepMind's Gemini 3.1 Pro holds second at 11.5% with strengths in creative writing and reasoning benchmarks, while OpenAI's GPT-5.5 debut trails slightly despite balanced capabilities. OpenAI and others linger below 3% amid stability concerns and narrower leads. With resolution tied to end-of-May Arena standings, traders eye potential last-minute model drops or leaderboard shifts from ongoing evaluations.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedAnthropic 86%
Google 12%
OpenAI 2.6%
xAI <1%
$6,209,861 Vol.
$6,209,861 Vol.

Anthropic
86%

12%

OpenAI
3%

xAI
<1%

Alibaba
<1%

ByteDance
<1%

Moonshot
<1%

Z.ai
<1%

DeepSeek
<1%

Meta
<1%

Baidu
<1%

Amazon
<1%

Mistral
<1%

Meituan
<1%

Microsoft
<1%
Anthropic 86%
Google 12%
OpenAI 2.6%
xAI <1%
$6,209,861 Vol.
$6,209,861 Vol.

Anthropic
86%

12%

OpenAI
3%

xAI
<1%

Alibaba
<1%

ByteDance
<1%

Moonshot
<1%

Z.ai
<1%

DeepSeek
<1%

Meta
<1%

Baidu
<1%

Amazon
<1%

Mistral
<1%

Meituan
<1%

Microsoft
<1%
Results from the "Rank" column under the "Text Arena | Overall" Leaderboard tab at https://lmarena.ai/leaderboard/text with style control off will be used to resolve this market.
Models will be ordered primarily by their leaderboard rank at the market’s check time. If two or more models are tied on rank, they will be ordered by their Arena score, including any underlying, unrounded, granular values reflected in the data below the leaderboard. If a tie remains, alphabetical order of company names as listed in this market group will be used as a final tiebreaker (e.g., if the two models are tied by exact arena score, “Google” would be ranked ahead of “xAI”). This market will resolve based on the company that occupies first place under this ranking system.
The resolution source for this market is the Chatbot Arena LLM Leaderboard found at https://lmarena.ai/. If this resolution source is unavailable at check time, this market will remain open until the leaderboard comes back online and will resolve based on the first check after it becomes available. If it becomes permanently unavailable, this market will resolve based on another resolution source.
Market Opened: Apr 14, 2026, 5:17 PM ET
Resolver
0x69c47De9D...Results from the "Rank" column under the "Text Arena | Overall" Leaderboard tab at https://lmarena.ai/leaderboard/text with style control off will be used to resolve this market.
Models will be ordered primarily by their leaderboard rank at the market’s check time. If two or more models are tied on rank, they will be ordered by their Arena score, including any underlying, unrounded, granular values reflected in the data below the leaderboard. If a tie remains, alphabetical order of company names as listed in this market group will be used as a final tiebreaker (e.g., if the two models are tied by exact arena score, “Google” would be ranked ahead of “xAI”). This market will resolve based on the company that occupies first place under this ranking system.
The resolution source for this market is the Chatbot Arena LLM Leaderboard found at https://lmarena.ai/. If this resolution source is unavailable at check time, this market will remain open until the leaderboard comes back online and will resolve based on the first check after it becomes available. If it becomes permanently unavailable, this market will resolve based on another resolution source.
Resolver
0x69c47De9D...Trader consensus on Polymarket strongly favors Anthropic with an 85.5% implied probability for having the top AI model by May 31, driven by Claude Opus 4.7's dominant performance across Arena.ai leaderboards—formerly LMSYS Chatbot Arena—following Anthropic's recent Dev Day releases. The model leads in text, coding, domain-specific (e.g., gaming, simulations), and overall rankings, outpacing rivals by wide margins in crowdsourced battles, as updated May 8–12. Google DeepMind's Gemini 3.1 Pro holds second at 11.5% with strengths in creative writing and reasoning benchmarks, while OpenAI's GPT-5.5 debut trails slightly despite balanced capabilities. OpenAI and others linger below 3% amid stability concerns and narrower leads. With resolution tied to end-of-May Arena standings, traders eye potential last-minute model drops or leaderboard shifts from ongoing evaluations.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated



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