Anthropic’s June 2026 release of Claude Mythos 5 and Fable 5 established a verified 1531 Elo baseline on the Text Arena leaderboard, setting an exceptionally high floor that subsequent Mythos-class iterations are expected to exceed given incremental gains in long-horizon reasoning and agentic capabilities. Trader consensus at 98.6% implied probability for a #1 debut reflects this performance trajectory, Anthropic’s consistent frontier positioning, and typical three-to-five-month release cadence, with the September 1 announcement of Mythos 5.1 reinforcing momentum in targeted benchmarks. Remaining uncertainty centers on potential delays past the December 31, 2026 resolution, a deliberate choice to skip leaderboard registration, or regulatory constraints on full capability demonstrations that could alter entry timing or scoring.
Riepilogo sperimentale generato dall'AI con riferimento ai dati di Polymarket. Questo non è un consiglio di trading e non ha alcun ruolo nella risoluzione di questo mercato. · AggiornatoIl prossimo modello Mythos-Class debutterà come #1? (Text Arena)
Sì
Sì
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".
Mercato aperto: Sep 1, 2026, 11:27 AM ET
Fonte di risoluzione
https://arena.ai/leaderboard/text/overall-no-style-controlRisolutore
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".
Fonte di risoluzione
https://arena.ai/leaderboard/text/overall-no-style-controlRisolutore
0x65070BE91...Anthropic’s June 2026 release of Claude Mythos 5 and Fable 5 established a verified 1531 Elo baseline on the Text Arena leaderboard, setting an exceptionally high floor that subsequent Mythos-class iterations are expected to exceed given incremental gains in long-horizon reasoning and agentic capabilities. Trader consensus at 98.6% implied probability for a #1 debut reflects this performance trajectory, Anthropic’s consistent frontier positioning, and typical three-to-five-month release cadence, with the September 1 announcement of Mythos 5.1 reinforcing momentum in targeted benchmarks. Remaining uncertainty centers on potential delays past the December 31, 2026 resolution, a deliberate choice to skip leaderboard registration, or regulatory constraints on full capability demonstrations that could alter entry timing or scoring.
Riepilogo sperimentale generato dall'AI con riferimento ai dati di Polymarket. Questo non è un consiglio di trading e non ha alcun ruolo nella risoluzione di questo mercato. · Aggiornato
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