Claude Fable 5.1 Max holds a 92.5% market-implied probability as the best AI model on September 21 because Anthropic released it on September 1 as its flagship frontier model, delivering measurable gains in long-horizon agentic coding, multistep research, and complex knowledge work over the prior Fable 5. The update added a 1M-token context window, 75% cheaper cache reads, and stronger benchmark results across coding and reasoning suites while maintaining the same token pricing. No competing lab has announced a comparable release in the narrow window before resolution. A last-minute model drop from OpenAI or Google, or an unexpected benchmark reversal, remains the only realistic path to shifting the outcome.
Experimentelle KI-generierte Zusammenfassung mit Polymarket-Daten. Dies ist keine Handelsberatung und spielt keine Rolle bei der Auflösung dieses Marktes. · Aktualisiertclaude-fable-5.1-max 93%
Andere 6%
claude-opus-5-max 1.3%
claude-opus-4-6-high <1%
$28,739 Vol.
$28,739 Vol.
claude-fable-5.1-max
93%
Andere
6%
claude-opus-5-max
1%
claude-opus-4-6-high
1%
claude-opus-5-high
<1%
claude-fable-5.1-max 93%
Andere 6%
claude-opus-5-max 1.3%
claude-opus-4-6-high <1%
$28,739 Vol.
$28,739 Vol.
claude-fable-5.1-max
93%
Andere
6%
claude-opus-5-max
1%
claude-opus-4-6-high
1%
claude-opus-5-high
<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.
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: Sep 3, 2026, 10:16 AM ET
Abwickler
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".
Abwickler
0x69c47De9D...Claude Fable 5.1 Max holds a 92.5% market-implied probability as the best AI model on September 21 because Anthropic released it on September 1 as its flagship frontier model, delivering measurable gains in long-horizon agentic coding, multistep research, and complex knowledge work over the prior Fable 5. The update added a 1M-token context window, 75% cheaper cache reads, and stronger benchmark results across coding and reasoning suites while maintaining the same token pricing. No competing lab has announced a comparable release in the narrow window before resolution. A last-minute model drop from OpenAI or Google, or an unexpected benchmark reversal, remains the only realistic path to shifting the outcome.
Experimentelle KI-generierte Zusammenfassung mit Polymarket-Daten. Dies ist keine Handelsberatung und spielt keine Rolle bei der Auflösung dieses Marktes. · Aktualisiert


Vorsicht bei externen Links.
Vorsicht bei externen Links.
Häufig gestellte Fragen