Anthropic’s June 2026 launch of Claude Mythos 5 and the safer Fable 5 variant established the current frontier baseline, with Mythos 5 restricted to Project Glasswing partners due to its advanced cybersecurity capabilities. Trader focus now centers on whether the next Mythos-class model (potentially Mythos 6 or an internally referenced “Model 2”) will appear on the LMSYS Chatbot Arena text leaderboard and clear specific Elo thresholds such as 1480+. Mid-August leaks highlighted a 12.5% Cobbench improvement alongside compute bottlenecks that could delay rollout, while Anthropic’s pattern of selective Arena submissions for blind human evaluation continues amid competition from OpenAI and Google models. Key catalysts include any official announcements, trusted-access expansions, or developer-conference updates before the December 31, 2026 resolution window.
Experimentelle KI-generierte Zusammenfassung mit Polymarket-Daten. Dies ist keine Handelsberatung und spielt keine Rolle bei der Auflösung dieses Marktes. · Aktualisiert1470+
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1480+
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1490+
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1510+
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$0.00 Vol.
1470+
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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 "Score" column under the "Text Arena | Overall" Leaderboard tab at https://arena.ai/leaderboard/text/overall-no-style-control with style control off will be used to resolve this market. This market will resolve solely based on the specified score in the Score 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 scores displayed without the "AutoEval" label will be considered.
If multiple models are added to the leaderboard on the same calendar date (ET), the highest-scoring 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 December 31, 2026, 11:59 PM ET, this market will resolve to "No".
Markt eröffnet: Aug 27, 2026, 6:39 PM ET
Abwicklungsquelle
https://arena.ai/leaderboard/text/overall-no-style-controlResolver
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 "Score" column under the "Text Arena | Overall" Leaderboard tab at https://arena.ai/leaderboard/text/overall-no-style-control with style control off will be used to resolve this market. This market will resolve solely based on the specified score in the Score 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 scores displayed without the "AutoEval" label will be considered.
If multiple models are added to the leaderboard on the same calendar date (ET), the highest-scoring 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 December 31, 2026, 11:59 PM ET, this market will resolve to "No".
Abwicklungsquelle
https://arena.ai/leaderboard/text/overall-no-style-controlResolver
0x65070BE91...Anthropic’s June 2026 launch of Claude Mythos 5 and the safer Fable 5 variant established the current frontier baseline, with Mythos 5 restricted to Project Glasswing partners due to its advanced cybersecurity capabilities. Trader focus now centers on whether the next Mythos-class model (potentially Mythos 6 or an internally referenced “Model 2”) will appear on the LMSYS Chatbot Arena text leaderboard and clear specific Elo thresholds such as 1480+. Mid-August leaks highlighted a 12.5% Cobbench improvement alongside compute bottlenecks that could delay rollout, while Anthropic’s pattern of selective Arena submissions for blind human evaluation continues amid competition from OpenAI and Google models. Key catalysts include any official announcements, trusted-access expansions, or developer-conference updates before the December 31, 2026 resolution window.
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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