Trader consensus on Polymarket assigns Anthropic a leading 64% implied probability for the best AI model by June 30, propelled by Claude Opus 4.7's April 16 release, which surged to the top of the LMSYS Chatbot Arena leaderboard with an Elo score around 1505, excelling in reasoning and coding benchmarks. Google's 26% trails closely, supported by Gemini 3.1 Pro's agentic strengths and Gemma 4's efficient open weights debut earlier in April. OpenAI's GPT-5.5, launched April 23, shows coding gains but lags in overall rankings, contributing to its 6.5% odds. Rapid release cycles and unreleased previews like Claude Mythos heighten uncertainty, with trader eyes on pre-June announcements amid intensifying U.S. AI lab competition.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedAnthropic 64.3%
Google 27%
OpenAI 7%
xAI 2.4%
$5,120,602 Vol.
$5,120,602 Vol.

Anthropic
64%

27%

OpenAI
7%

xAI
2%

Meta
1%

DeepSeek
<1%

Mistral
<1%

Microsoft
<1%

Amazon
<1%

Alibaba
<1%

Moonshot
<1%

Z.ai
<1%

ByteDance
<1%

Meituan
<1%

Baidu
<1%
Anthropic 64.3%
Google 27%
OpenAI 7%
xAI 2.4%
$5,120,602 Vol.
$5,120,602 Vol.

Anthropic
64%

27%

OpenAI
7%

xAI
2%

Meta
1%

DeepSeek
<1%

Mistral
<1%

Microsoft
<1%

Amazon
<1%

Alibaba
<1%

Moonshot
<1%

Z.ai
<1%

ByteDance
<1%

Meituan
<1%

Baidu
<1%
Results from the "Rank" section on the Leaderboard tab of https://lmarena.ai/leaderboard/text with the 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 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: Oct 10, 2025, 5:27 PM ET
Resolver
0x2F5e3684c...Results from the "Rank" section on the Leaderboard tab of https://lmarena.ai/leaderboard/text with the 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 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
0x2F5e3684c...Trader consensus on Polymarket assigns Anthropic a leading 64% implied probability for the best AI model by June 30, propelled by Claude Opus 4.7's April 16 release, which surged to the top of the LMSYS Chatbot Arena leaderboard with an Elo score around 1505, excelling in reasoning and coding benchmarks. Google's 26% trails closely, supported by Gemini 3.1 Pro's agentic strengths and Gemma 4's efficient open weights debut earlier in April. OpenAI's GPT-5.5, launched April 23, shows coding gains but lags in overall rankings, contributing to its 6.5% odds. Rapid release cycles and unreleased previews like Claude Mythos heighten uncertainty, with trader eyes on pre-June announcements amid intensifying U.S. AI lab competition.
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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