Recent releases of Claude Fable 5.1 and Mythos 5.1 on September 1 have positioned Anthropic’s latest frontier models at the top of multiple September 2026 leaderboards, including BenchLM and HLE, where Fable 5.1 leads with strong scores in coding, agentic workflows, and knowledge work. This underpins the near-even split between claude-fable-5.1-max and “Other” in trader consensus, as OpenAI’s GPT-5.6 variants and Google’s Gemini 3.8 series remain close on composite benchmarks while offering different pricing and context strengths. Claude Opus 5 continues to trade at lower implied odds due to its efficiency edge at roughly half Fable’s cost, though rapid iteration across labs creates ongoing uncertainty ahead of the September 21 resolution.
Résumé expérimental généré par IA à partir des données Polymarket. Ceci n'est pas un conseil de trading et ne joue aucun rôle dans la résolution de ce marché. · Mis à jourAutre 31%
claude-fable-5.1-max 28%
claude-opus-5-high 22%
claude-opus-5-max 13%
Autre
31%
claude-fable-5.1-max
28%
claude-opus-5-high
22%
claude-opus-5-max
13%
claude-opus-4-6-high
3%
Autre 31%
claude-fable-5.1-max 28%
claude-opus-5-high 22%
claude-opus-5-max 13%
Autre
31%
claude-fable-5.1-max
28%
claude-opus-5-high
22%
claude-opus-5-max
13%
claude-opus-4-6-high
3%
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".
Marché ouvert : Sep 3, 2026, 10:16 AM ET
Résolveur
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".
Résolveur
0x69c47De9D...Recent releases of Claude Fable 5.1 and Mythos 5.1 on September 1 have positioned Anthropic’s latest frontier models at the top of multiple September 2026 leaderboards, including BenchLM and HLE, where Fable 5.1 leads with strong scores in coding, agentic workflows, and knowledge work. This underpins the near-even split between claude-fable-5.1-max and “Other” in trader consensus, as OpenAI’s GPT-5.6 variants and Google’s Gemini 3.8 series remain close on composite benchmarks while offering different pricing and context strengths. Claude Opus 5 continues to trade at lower implied odds due to its efficiency edge at roughly half Fable’s cost, though rapid iteration across labs creates ongoing uncertainty ahead of the September 21 resolution.
Résumé expérimental généré par IA à partir des données Polymarket. Ceci n'est pas un conseil de trading et ne joue aucun rôle dans la résolution de ce marché. · Mis à jour

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