Claude Opus 5’s July 24 release by Anthropic established it as the market leader for August 31 evaluations, delivering near-frontier performance on coding, agentic, and novel-reasoning benchmarks like Frontier-Bench, ARC-AGI-3, and SWE-Bench Pro at half the token price of higher-tier siblings such as Fable 5. The model quickly became the default on Claude Max and Pro tiers, with sustained leaderboard dominance through late August confirming its edge in practical developer and enterprise workflows. Trader consensus at 97.9% implied probability for claude-opus-5-max reflects this verified capability gap. A surprise new model launch or benchmark shift favoring a competitor on an untested dimension could still alter the outcome before resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updatedclaude-opus-5-max 97.0%
claude-opus-5-high 2.7%
Other <1%
claude-opus-4-6-high <1%
$59,704 Vol.
$59,704 Vol.
Aug 31, 2026
claude-opus-5-max
97%
claude-opus-5-high
3%
Other
<1%
claude-opus-4-6-high
<1%
claude-opus-5-max 97.0%
claude-opus-5-high 2.7%
Other <1%
claude-opus-4-6-high <1%
$59,704 Vol.
$59,704 Vol.
Aug 31, 2026
claude-opus-5-max
$23,139 Vol.
97%
claude-opus-5-high
$14,378 Vol.
3%
Other
$10,994 Vol.
<1%
claude-opus-4-6-high
$11,194 Vol.
<1%
This market will resolve according to the model that has the highest arena rank based on the arena.ai Text Arena (Overall) when the table under the "Leaderboard" tab is checked on the specified date, 12:00 PM ET.
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.
No new model will be added to this market after market creation. Any model not explicitly listed in this market will be encompassed under the "Other" option.
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 model names as listed in this market group (full string, including suffixes such as “-thinking”) will be used as a final tiebreaker (e.g., if two models remain tied, “claude-opus-4-6” would be ranked ahead of “claude-opus-4-6-thinking”). This market will resolve to the model that comes first according to this order.
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".Claude Opus 5’s July 24 release by Anthropic established it as the market leader for August 31 evaluations, delivering near-frontier performance on coding, agentic, and novel-reasoning benchmarks like Frontier-Bench, ARC-AGI-3, and SWE-Bench Pro at half the token price of higher-tier siblings such as Fable 5. The model quickly became the default on Claude Max and Pro tiers, with sustained leaderboard dominance through late August confirming its edge in practical developer and enterprise workflows. Trader consensus at 97.9% implied probability for claude-opus-5-max reflects this verified capability gap. A surprise new model launch or benchmark shift favoring a competitor on an untested dimension could still alter the outcome before resolution.
This market will resolve according to the model that has the highest arena rank based on the arena.ai Text Arena (Overall) when the table under the "Leaderboard" tab is checked on the specified date, 12:00 PM ET.
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.
No new model will be added to this market after market creation. Any model not explicitly listed in this market will be encompassed under the "Other" option.
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 model names as listed in this market group (full string, including suffixes such as “-thinking”) will be used as a final tiebreaker (e.g., if two models remain tied, “claude-opus-4-6” would be ranked ahead of “claude-opus-4-6-thinking”). This market will resolve to the model that comes first according to this order.
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-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.
No new model will be added to this market after market creation. Any model not explicitly listed in this market will be encompassed under the "Other" option.
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 model names as listed in this market group (full string, including suffixes such as “-thinking”) will be used as a final tiebreaker (e.g., if two models remain tied, “claude-opus-4-6” would be ranked ahead of “claude-opus-4-6-thinking”). This market will resolve to the model that comes first according to this order.
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 14, 2026, 5:27 PM ET
Volume
$59,704End Date
Sep 1, 2026Market Opened
Aug 14, 2026, 5:27 PM ETResolver
0x69c47De9D...This market will resolve according to the model that has the highest arena rank based on the arena.ai Text Arena (Overall) when the table under the "Leaderboard" tab is checked on the specified date, 12:00 PM ET.
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.
No new model will be added to this market after market creation. Any model not explicitly listed in this market will be encompassed under the "Other" option.
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 model names as listed in this market group (full string, including suffixes such as “-thinking”) will be used as a final tiebreaker (e.g., if two models remain tied, “claude-opus-4-6” would be ranked ahead of “claude-opus-4-6-thinking”). This market will resolve to the model that comes first according to this order.
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".Claude Opus 5’s July 24 release by Anthropic established it as the market leader for August 31 evaluations, delivering near-frontier performance on coding, agentic, and novel-reasoning benchmarks like Frontier-Bench, ARC-AGI-3, and SWE-Bench Pro at half the token price of higher-tier siblings such as Fable 5. The model quickly became the default on Claude Max and Pro tiers, with sustained leaderboard dominance through late August confirming its edge in practical developer and enterprise workflows. Trader consensus at 97.9% implied probability for claude-opus-5-max reflects this verified capability gap. A surprise new model launch or benchmark shift favoring a competitor on an untested dimension could still alter the outcome before resolution.
This market will resolve according to the model that has the highest arena rank based on the arena.ai Text Arena (Overall) when the table under the "Leaderboard" tab is checked on the specified date, 12:00 PM ET.
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.
No new model will be added to this market after market creation. Any model not explicitly listed in this market will be encompassed under the "Other" option.
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 model names as listed in this market group (full string, including suffixes such as “-thinking”) will be used as a final tiebreaker (e.g., if two models remain tied, “claude-opus-4-6” would be ranked ahead of “claude-opus-4-6-thinking”). This market will resolve to the model that comes first according to this order.
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-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.
No new model will be added to this market after market creation. Any model not explicitly listed in this market will be encompassed under the "Other" option.
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 model names as listed in this market group (full string, including suffixes such as “-thinking”) will be used as a final tiebreaker (e.g., if two models remain tied, “claude-opus-4-6” would be ranked ahead of “claude-opus-4-6-thinking”). This market will resolve to the model that comes first according to this order.
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
$59,704End Date
Sep 1, 2026Market Opened
Aug 14, 2026, 5:27 PM ETResolver
0x69c47De9D...Claude Opus 5’s July 24 release by Anthropic established it as the market leader for August 31 evaluations, delivering near-frontier performance on coding, agentic, and novel-reasoning benchmarks like Frontier-Bench, ARC-AGI-3, and SWE-Bench Pro at half the token price of higher-tier siblings such as Fable 5. The model quickly became the default on Claude Max and Pro tiers, with sustained leaderboard dominance through late August confirming its edge in practical developer and enterprise workflows. Trader consensus at 97.9% implied probability for claude-opus-5-max reflects this verified capability gap. A surprise new model launch or benchmark shift favoring a competitor on an untested dimension could still alter the outcome 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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