Trader consensus on Polymarket heavily favors Anthropic at 86% implied probability to hold the #1 spot on the LMSYS Chatbot Arena leaderboard (Style Control On) by May 31, driven by Claude Opus 4.7's sustained lead with an Elo score of 1,503 as confirmed in the Stanford AI Index Report exported in March 2026—outpacing xAI (1,495), Google (1,494), and OpenAI (1,481). Recent buzz around resolved throttling issues and new features like Claude Skills has reinforced its substance-over-style edge in blind evaluations, isolating reasoning depth from superficial flair. Google's 12.5% reflects hopes for a Gemini 3.1 update, but no firm timelines exist; OpenAI trails amid perceived delays in GPT-5 iterations. Watch for unannounced model drops before resolution, as leaderboard volatility remains high in this frontier AI race.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedAnthropic 86%
Google 13%
OpenAI 1.2%
Meta <1%
$384,599 Vol.
$384,599 Vol.

Anthropic
86%

13%

OpenAI
1%

Meta
<1%

xAI
<1%

ByteDance
<1%

Baidu
<1%

DeepSeek
<1%

Alibaba
<1%

Amazon
<1%

Moonshot
<1%

Z.ai
<1%

Mistral
<1%

Meituan
<1%

Microsoft
<1%
Anthropic 86%
Google 13%
OpenAI 1.2%
Meta <1%
$384,599 Vol.
$384,599 Vol.

Anthropic
86%

13%

OpenAI
1%

Meta
<1%

xAI
<1%

ByteDance
<1%

Baidu
<1%

DeepSeek
<1%

Alibaba
<1%

Amazon
<1%

Moonshot
<1%

Z.ai
<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 on 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, 5:18 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 on 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 heavily favors Anthropic at 86% implied probability to hold the #1 spot on the LMSYS Chatbot Arena leaderboard (Style Control On) by May 31, driven by Claude Opus 4.7's sustained lead with an Elo score of 1,503 as confirmed in the Stanford AI Index Report exported in March 2026—outpacing xAI (1,495), Google (1,494), and OpenAI (1,481). Recent buzz around resolved throttling issues and new features like Claude Skills has reinforced its substance-over-style edge in blind evaluations, isolating reasoning depth from superficial flair. Google's 12.5% reflects hopes for a Gemini 3.1 update, but no firm timelines exist; OpenAI trails amid perceived delays in GPT-5 iterations. Watch for unannounced model drops before resolution, as leaderboard volatility remains high in this frontier AI race.
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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