Anthropic’s recent release of Claude Fable 5.1 and Mythos 5.1 on September 1, 2026, reinforces trader expectations that the next Mythos-class model will launch with frontier-level capabilities sufficient to claim the top Text Arena Elo position. The prior Mythos 5 variant already posted a verified 1531 score, well above typical leaderboard thresholds, while Anthropic’s cadence of major updates every three to five months and focus on long-horizon agentic and coding performance continue to drive competitive positioning against OpenAI and Google models. Market-implied odds near 74.5% for a #1 debut reflect this track record alongside ongoing safety reviews and compute constraints that could still shift timelines or final benchmark results before resolution.
Експериментальне резюме, згенероване ШІ з посиланням на дані Polymarket. Це не торгова порада і не впливає на вирішення цього ринку. · ОновленоWill the next Mythos-Class model debut as #1? (Text Arena)
Any model whose official name includes "Mythos," or "Fable" (e.g., Claude Fable 5.1 or Claude Fable 6), or that Anthropic officially describes as a "Mythos-class" model or similar, will qualify for this market's resolution. Anthropic's other model tiers, such as Opus, Sonnet, or Haiku, will not qualify.
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. This market will resolve solely based on the specified rank in the Rank column of the leaderboard, regardless of any underlying granular or unrounded data presented elsewhere.
A model marked "AutoEval" will not be considered added to the leaderboard. Only ranks displayed without the "AutoEval" label will be considered.
If multiple qualifying models are added to the leaderboard on the same calendar date (ET), the highest-ranking model will be used for resolution. Models added to the leaderboard on the calendar date following the initial qualifying model's first appearance will not be considered. If a model is first added to the Arena.AI Leaderboard but is subsequently removed and not re-added, such that it is not displayed on the leaderboard at 12:00 PM ET on the calendar date following its first appearance, its appearance will not qualify as added to the Arena.AI Leaderboard.
A qualifying model must be newly added to the Arena.AI Leaderboard. Whether the model was previously released, publicly accessible, in beta, or otherwise available before appearing on the leaderboard is irrelevant for this market.
The resolution source for this market is the Chatbot Arena LLM Leaderboard found at https://arena.ai/leaderboard/text/overall-no-style-control. If this resolution source is unavailable at 12:00 PM ET on the calendar date following the date on which the qualifying model first appears on the leaderboard, this market will resolve based on the first subsequent instance at which such a score becomes available on the leaderboard. If it remains unavailable through the end of the seventh day after the qualifying model first appears on the leaderboard or if no qualifying model release occurs by June 30, 2027, 11:59 PM ET, this market will resolve to "No".
Ринок відкрито: Sep 1, 2026, 11:27 AM ET
Джерело вирішення
https://arena.ai/leaderboard/text/overall-no-style-controlВирішувач
0x65070BE91...Any model whose official name includes "Mythos," or "Fable" (e.g., Claude Fable 5.1 or Claude Fable 6), or that Anthropic officially describes as a "Mythos-class" model or similar, will qualify for this market's resolution. Anthropic's other model tiers, such as Opus, Sonnet, or Haiku, will not qualify.
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. This market will resolve solely based on the specified rank in the Rank column of the leaderboard, regardless of any underlying granular or unrounded data presented elsewhere.
A model marked "AutoEval" will not be considered added to the leaderboard. Only ranks displayed without the "AutoEval" label will be considered.
If multiple qualifying models are added to the leaderboard on the same calendar date (ET), the highest-ranking model will be used for resolution. Models added to the leaderboard on the calendar date following the initial qualifying model's first appearance will not be considered. If a model is first added to the Arena.AI Leaderboard but is subsequently removed and not re-added, such that it is not displayed on the leaderboard at 12:00 PM ET on the calendar date following its first appearance, its appearance will not qualify as added to the Arena.AI Leaderboard.
A qualifying model must be newly added to the Arena.AI Leaderboard. Whether the model was previously released, publicly accessible, in beta, or otherwise available before appearing on the leaderboard is irrelevant for this market.
The resolution source for this market is the Chatbot Arena LLM Leaderboard found at https://arena.ai/leaderboard/text/overall-no-style-control. If this resolution source is unavailable at 12:00 PM ET on the calendar date following the date on which the qualifying model first appears on the leaderboard, this market will resolve based on the first subsequent instance at which such a score becomes available on the leaderboard. If it remains unavailable through the end of the seventh day after the qualifying model first appears on the leaderboard or if no qualifying model release occurs by June 30, 2027, 11:59 PM ET, this market will resolve to "No".
Джерело вирішення
https://arena.ai/leaderboard/text/overall-no-style-controlВирішувач
0x65070BE91...Anthropic’s recent release of Claude Fable 5.1 and Mythos 5.1 on September 1, 2026, reinforces trader expectations that the next Mythos-class model will launch with frontier-level capabilities sufficient to claim the top Text Arena Elo position. The prior Mythos 5 variant already posted a verified 1531 score, well above typical leaderboard thresholds, while Anthropic’s cadence of major updates every three to five months and focus on long-horizon agentic and coding performance continue to drive competitive positioning against OpenAI and Google models. Market-implied odds near 74.5% for a #1 debut reflect this track record alongside ongoing safety reviews and compute constraints that could still shift timelines or final benchmark results before resolution.
Експериментальне резюме, згенероване ШІ з посиланням на дані Polymarket. Це не торгова порада і не впливає на вирішення цього ринку. · Оновлено
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Обережно з зовнішніми посиланнями.
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