Anthropic's July 2026 releases of Claude Opus 5, Fable 5, and Mythos 5, which quickly topped Artificial Analysis Intelligence and Agentic Indices along with coding leaderboards, have driven the market's strong 88.5% implied probability for the company. These models demonstrated clear gains in agentic workflows, reasoning benchmarks, and production-scale tasks relative to OpenAI's GPT-5 variants and Google's Gemini 3.x series, which currently sit at much lower odds. Traders appear to view Anthropic's recent capability lead and release cadence as durable through October, though any surprise frontier launch from competitors could still narrow the gap before resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedAnthropic 66%
Google 14.6%
OpenAI 3.5%
Meituan 2.5%

Anthropic
72%

15%

OpenAI
3%

Meituan
3%

SpaceXAI
2%

Mistral
2%

Microsoft
1%

Moonshot
1%

Nvidia
1%

Meta
1%

DeepSeek
1%

Z.ai
1%

Amazon
1%

Thinky
1%

Baidu
1%

Xiaomi
1%

ByteDance
1%

MiniMax
1%

Tencent
1%

StepFun
1%

Alibaba
<1%
Anthropic 66%
Google 14.6%
OpenAI 3.5%
Meituan 2.5%

Anthropic
72%

15%

OpenAI
3%

Meituan
3%

SpaceXAI
2%

Mistral
2%

Microsoft
1%

Moonshot
1%

Nvidia
1%

Meta
1%

DeepSeek
1%

Z.ai
1%

Amazon
1%

Thinky
1%

Baidu
1%

Xiaomi
1%

ByteDance
1%

MiniMax
1%

Tencent
1%

StepFun
1%

Alibaba
<1%
Results from the "Rank" column under the "Text Arena | Overall" Leaderboard tab at https://arena.ai/leaderboard/text/overall-no-style-control with style control off (Adjustments: None) and filtered for "Models" will be used to resolve this market.
Note: Models marked “AutoEval” at the applicable check time will not be considered, regardless of whether they display a rank or score.
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 still 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 “SpaceXAI”). This market will resolve based on the company that occupies first place under this ranking.
The resolution source for this market is the arena.ai Text Arena (Overall). 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 to "Other".
Market Opened: Aug 12, 2026, 8:01 PM ET
Resolver
0x69c47De9D...Results from the "Rank" column under the "Text Arena | Overall" Leaderboard tab at https://arena.ai/leaderboard/text/overall-no-style-control with style control off (Adjustments: None) and filtered for "Models" will be used to resolve this market.
Note: Models marked “AutoEval” at the applicable check time will not be considered, regardless of whether they display a rank or score.
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 still 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 “SpaceXAI”). This market will resolve based on the company that occupies first place under this ranking.
The resolution source for this market is the arena.ai Text Arena (Overall). 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 to "Other".
Resolver
0x69c47De9D...Anthropic's July 2026 releases of Claude Opus 5, Fable 5, and Mythos 5, which quickly topped Artificial Analysis Intelligence and Agentic Indices along with coding leaderboards, have driven the market's strong 88.5% implied probability for the company. These models demonstrated clear gains in agentic workflows, reasoning benchmarks, and production-scale tasks relative to OpenAI's GPT-5 variants and Google's Gemini 3.x series, which currently sit at much lower odds. Traders appear to view Anthropic's recent capability lead and release cadence as durable through October, though any surprise frontier launch from competitors could still narrow the gap before resolution.
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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