Anthropic’s recent Claude 5-series releases, including Opus 5 in July and Fable 5 plus Mythos 5 in June, have propelled its models to the top of multiple August 2026 leaderboards for intelligence, agentic coding, and reasoning benchmarks, driving the 67.5% implied probability it retains the #1 position through October. Traders see sustained momentum from rapid iteration and strong performance on tasks like long-horizon workflows, outpacing OpenAI’s GPT-5.6 family and Google’s Gemini 3 variants in composite scores. Rival labs continue closing gaps with frequent updates, yet no confirmed breakthrough has shifted the consensus yet. Key catalysts ahead include potential Q3 releases or capability jumps from OpenAI, xAI, or DeepSeek that could alter resolution criteria before the October 31 deadline.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedAnthropic 68%
Meituan 8.8%
Amazon 5.9%
Meta 6%
NEW
NEW
Oct 31, 2026
Anthropic
68%
Meituan
9%
Amazon
6%
Meta
6%
OpenAI
5%
5%
DeepSeek
4%
SpaceXAI
4%
Alibaba
4%
StepFun
3%
ByteDance
3%
MiniMax
3%
Z.ai
3%
Moonshot
3%
Mistral
2%
Xiaomi
2%
Nvidia
10%
Tencent
8%
Microsoft
9%
Baidu
1%
Thinky
9%
Anthropic 68%
Meituan 8.8%
Amazon 5.9%
Meta 6%
NEW
NEW
Oct 31, 2026
Anthropic
$324 Vol.
68%
Meituan
$110 Vol.
9%
Amazon
$106 Vol.
6%
Meta
$92 Vol.
6%
OpenAI
$39 Vol.
5%
$39 Vol.
5%
DeepSeek
$65 Vol.
4%
SpaceXAI
$39 Vol.
4%
Alibaba
$39 Vol.
4%
StepFun
$77 Vol.
3%
ByteDance
$93 Vol.
3%
MiniMax
$120 Vol.
3%
Z.ai
$47 Vol.
3%
Moonshot
$39 Vol.
3%
Mistral
$112 Vol.
2%
Xiaomi
$195 Vol.
2%
Nvidia
$106 Vol.
10%
Tencent
$110 Vol.
8%
Microsoft
$108 Vol.
9%
Baidu
$54 Vol.
1%
Thinky
$110 Vol.
9%
This market will resolve according to the company which owns the model which has the highest arena rank based on the arena.ai Text Arena (Overall) (Style Control On) when the table under the "Leaderboard" tab is checked on October 31, 2026, 12:00 PM ET.
Results from the "Rank" column under the "Text Arena | Overall" Leaderboard tab at https://arena.ai/leaderboard/text/overall with style control on (Adjustments: Style Control) 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".Anthropic’s recent Claude 5-series releases, including Opus 5 in July and Fable 5 plus Mythos 5 in June, have propelled its models to the top of multiple August 2026 leaderboards for intelligence, agentic coding, and reasoning benchmarks, driving the 67.5% implied probability it retains the #1 position through October. Traders see sustained momentum from rapid iteration and strong performance on tasks like long-horizon workflows, outpacing OpenAI’s GPT-5.6 family and Google’s Gemini 3 variants in composite scores. Rival labs continue closing gaps with frequent updates, yet no confirmed breakthrough has shifted the consensus yet. Key catalysts ahead include potential Q3 releases or capability jumps from OpenAI, xAI, or DeepSeek that could alter resolution criteria before the October 31 deadline.
This market will resolve according to the company which owns the model which has the highest arena rank based on the arena.ai Text Arena (Overall) (Style Control On) when the table under the "Leaderboard" tab is checked on October 31, 2026, 12:00 PM ET.
Results from the "Rank" column under the "Text Arena | Overall" Leaderboard tab at https://arena.ai/leaderboard/text/overall with style control on (Adjustments: Style Control) 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".
Results from the "Rank" column under the "Text Arena | Overall" Leaderboard tab at https://arena.ai/leaderboard/text/overall with style control on (Adjustments: Style Control) 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, 8:03 PM ET
Volume
$2,023End Date
Oct 31, 2026Market Opened
Aug 12, 2026, 8:03 PM ETResolver
0x69c47De9D...This market will resolve according to the company which owns the model which has the highest arena rank based on the arena.ai Text Arena (Overall) (Style Control On) when the table under the "Leaderboard" tab is checked on October 31, 2026, 12:00 PM ET.
Results from the "Rank" column under the "Text Arena | Overall" Leaderboard tab at https://arena.ai/leaderboard/text/overall with style control on (Adjustments: Style Control) 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".Anthropic’s recent Claude 5-series releases, including Opus 5 in July and Fable 5 plus Mythos 5 in June, have propelled its models to the top of multiple August 2026 leaderboards for intelligence, agentic coding, and reasoning benchmarks, driving the 67.5% implied probability it retains the #1 position through October. Traders see sustained momentum from rapid iteration and strong performance on tasks like long-horizon workflows, outpacing OpenAI’s GPT-5.6 family and Google’s Gemini 3 variants in composite scores. Rival labs continue closing gaps with frequent updates, yet no confirmed breakthrough has shifted the consensus yet. Key catalysts ahead include potential Q3 releases or capability jumps from OpenAI, xAI, or DeepSeek that could alter resolution criteria before the October 31 deadline.
This market will resolve according to the company which owns the model which has the highest arena rank based on the arena.ai Text Arena (Overall) (Style Control On) when the table under the "Leaderboard" tab is checked on October 31, 2026, 12:00 PM ET.
Results from the "Rank" column under the "Text Arena | Overall" Leaderboard tab at https://arena.ai/leaderboard/text/overall with style control on (Adjustments: Style Control) 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".
Results from the "Rank" column under the "Text Arena | Overall" Leaderboard tab at https://arena.ai/leaderboard/text/overall with style control on (Adjustments: Style Control) 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".
Volume
$2,023End Date
Oct 31, 2026Market Opened
Aug 12, 2026, 8:03 PM ETResolver
0x69c47De9D...Anthropic’s recent Claude 5-series releases, including Opus 5 in July and Fable 5 plus Mythos 5 in June, have propelled its models to the top of multiple August 2026 leaderboards for intelligence, agentic coding, and reasoning benchmarks, driving the 67.5% implied probability it retains the #1 position through October. Traders see sustained momentum from rapid iteration and strong performance on tasks like long-horizon workflows, outpacing OpenAI’s GPT-5.6 family and Google’s Gemini 3 variants in composite scores. Rival labs continue closing gaps with frequent updates, yet no confirmed breakthrough has shifted the consensus yet. Key catalysts ahead include potential Q3 releases or capability jumps from OpenAI, xAI, or DeepSeek that could alter resolution criteria before the October 31 deadline.
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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