Anthropic’s June 2026 rollout of the public Claude Fable 5 and restricted Mythos 5 variants reset the Mythos-class baseline after earlier cybersecurity-restricted previews, with no official announcements, leaks, or new capability demonstrations reported since. Traders price the next model’s Text Arena (lmarena.ai/text) debut around historical frontier cadence of three to five months, tempered by ongoing safety evaluations, compute limits, and regulatory scrutiny of agentic or cyber features. Related Polymarket contracts show fragmented but elevated probabilities for an early-to-mid September release, while high implied odds on 1470+ and 1480+ Text Arena scores reflect expectations that any qualifying model will quickly post strong overall Elo once added to the leaderboard before the December 31, 2026 resolution.
Polymarket ডেটা রেফারেন্স করে পরীক্ষামূলক AI-জেনারেটেড সারাংশ। এটি ট্রেডিং পরামর্শ নয় এবং এই মার্কেট কীভাবে রেজলভ হয় তাতে কোনো ভূমিকা রাখে না। · আপডেটেড$14,122 Vol.
1470+
93%
1480+
88%
1490+
77%
1500+
54%
1510+
15%
$14,122 Vol.
1470+
93%
1480+
88%
1490+
77%
1500+
54%
1510+
15%
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".
মার্কেট ওপেন হয়েছে: Aug 27, 2026, 6:39 PM ET
রেজোলিউশন সোর্স
https://arena.ai/leaderboard/text/overall-no-style-controlরেজলভার
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".
রেজোলিউশন সোর্স
https://arena.ai/leaderboard/text/overall-no-style-controlরেজলভার
0x65070BE91...Anthropic’s June 2026 rollout of the public Claude Fable 5 and restricted Mythos 5 variants reset the Mythos-class baseline after earlier cybersecurity-restricted previews, with no official announcements, leaks, or new capability demonstrations reported since. Traders price the next model’s Text Arena (lmarena.ai/text) debut around historical frontier cadence of three to five months, tempered by ongoing safety evaluations, compute limits, and regulatory scrutiny of agentic or cyber features. Related Polymarket contracts show fragmented but elevated probabilities for an early-to-mid September release, while high implied odds on 1470+ and 1480+ Text Arena scores reflect expectations that any qualifying model will quickly post strong overall Elo once added to the leaderboard before the December 31, 2026 resolution.
Polymarket ডেটা রেফারেন্স করে পরীক্ষামূলক AI-জেনারেটেড সারাংশ। এটি ট্রেডিং পরামর্শ নয় এবং এই মার্কেট কীভাবে রেজলভ হয় তাতে কোনো ভূমিকা রাখে না। · আপডেটেড

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বাহ্যিক লিংক থেকে সাবধান।
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