**Claude Opus 5's strong July 24 release continues to anchor trader sentiment for the September 7 "best AI model" market.** Released with near-Fable 5 frontier performance on coding, agentic, and knowledge-work benchmarks at half the price, it quickly set new state-of-the-art marks on Frontier-Bench, ARC-AGI-3, CursorBench, and OSWorld while becoming the default on Claude Max and strongest option on Pro. As of mid-to-late August 2026 leaderboards, Opus 5 variants lead or tie for top spots in practical metrics like SWE-bench coding and broad intelligence indices, ahead of or competitive with Mythos/Fable 5 and GPT-5.6 models. High and max effort settings further optimize its results without raising costs, reinforcing the 67% and 25.5% implied probabilities. With no major competing releases imminent before early September, recent verified benchmark gains and efficiency advantages sustain the clear market consensus around these Claude Opus 5 configurations.
Experimentelle KI-generierte Zusammenfassung mit Polymarket-Daten. Dies ist keine Handelsberatung und spielt keine Rolle bei der Auflösung dieses Marktes. · Aktualisiertclaude-opus-5-high 67%
claude-opus-5-max 26%
Andere 6.3%
claude-opus-4-6-high 5%
claude-opus-5-high
67%
claude-opus-5-max
26%
Andere
6%
claude-opus-4-6-high
5%
claude-opus-5-high 67%
claude-opus-5-max 26%
Andere 6.3%
claude-opus-4-6-high 5%
claude-opus-5-high
67%
claude-opus-5-max
26%
Andere
6%
claude-opus-4-6-high
5%
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 “-high” and “-max”) will be used as a final tiebreaker (e.g., if two models remain tied, “claude-opus-5-high” would be ranked ahead of “claude-opus-5-max”). 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".
Markt eröffnet: Aug 21, 2026, 2:42 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.
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 “-high” and “-max”) will be used as a final tiebreaker (e.g., if two models remain tied, “claude-opus-5-high” would be ranked ahead of “claude-opus-5-max”). 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".
Resolver
0x69c47De9D...**Claude Opus 5's strong July 24 release continues to anchor trader sentiment for the September 7 "best AI model" market.** Released with near-Fable 5 frontier performance on coding, agentic, and knowledge-work benchmarks at half the price, it quickly set new state-of-the-art marks on Frontier-Bench, ARC-AGI-3, CursorBench, and OSWorld while becoming the default on Claude Max and strongest option on Pro. As of mid-to-late August 2026 leaderboards, Opus 5 variants lead or tie for top spots in practical metrics like SWE-bench coding and broad intelligence indices, ahead of or competitive with Mythos/Fable 5 and GPT-5.6 models. High and max effort settings further optimize its results without raising costs, reinforcing the 67% and 25.5% implied probabilities. With no major competing releases imminent before early September, recent verified benchmark gains and efficiency advantages sustain the clear market consensus around these Claude Opus 5 configurations.
Experimentelle KI-generierte Zusammenfassung mit Polymarket-Daten. Dies ist keine Handelsberatung und spielt keine Rolle bei der Auflösung dieses Marktes. · Aktualisiert

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