Anthropic’s September 1, 2026 launch of Claude Mythos 5.1 and Fable 5.1, which posted leading Humanity’s Last Exam scores of 59.1–65% on the official leaderboard, anchors trader expectations for the next Mythos-class model to clear 50–55% thresholds upon debut. These gains stem from continued scaling, tool-augmented reasoning, and targeted improvements in cybersecurity and biology domains, outpacing OpenAI’s GPT-6 Astra (54.7%) and other frontier entries clustered in the mid-40s to low-50s. HLE’s resistance to saturation and its 2,500 expert-authored questions across math, physics, and multimodal tasks keep outcomes sensitive to any new Anthropic release before year-end, with market-implied odds reflecting the lab’s recent cadence and competitive pressure from Google DeepMind and Meta.
Experimentelle KI-generierte Zusammenfassung mit Polymarket-Daten. Dies ist keine Handelsberatung und spielt keine Rolle bei der Auflösung dieses Marktes. · Aktualisiert$20,823 Vol.
45%+
97%
50 %+
99%
55 %+
5%
60%+
2%
$20,823 Vol.
45%+
97%
50 %+
99%
55 %+
5%
60%+
2%
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.
The percentage displayed as "HLE Accuracy" for the model in its result card on the "AI Progress on Humanity's Last Exam" chart at https://agi.safe.ai/ will be used to resolve this market. This market will resolve solely based on the displayed HLE Accuracy, regardless of the model's Calibration Error, chart position, other configuration scores, or any underlying granular or unrounded data presented elsewhere.
If multiple qualifying models are added to the Humanity's Last Exam results on the same calendar date (ET), the model with the highest HLE Accuracy will be used for resolution. Models added to the results on the calendar date following the initial qualifying model's first appearance will not be considered. If a model is first added to the Humanity's Last Exam results but is subsequently removed and not re-added, such that it is not displayed on the site at 12:00 PM ET on the calendar date following its first appearance, its appearance will not qualify as added to the Humanity's Last Exam results.
A qualifying model must be newly added to the Humanity's Last Exam results at https://agi.safe.ai/. Whether the model was previously released, publicly accessible, in beta, or otherwise available before appearing on the site is irrelevant for this market.
The resolution source for this market is the official Humanity's Last Exam website found at https://agi.safe.ai/. 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 site, this market will resolve based on the first subsequent instance at which the model's HLE Accuracy becomes available on the site. If it remains unavailable through the end of the seventh day after the qualifying model first appears on the site or if no qualifying model is added by December 31, 2026, 11:59 PM ET, this market will resolve to "No".
Markt eröffnet: Sep 1, 2026, 11:31 AM ET
Abwicklungsquelle
https://agi.safe.ai/Abwickler
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.
The percentage displayed as "HLE Accuracy" for the model in its result card on the "AI Progress on Humanity's Last Exam" chart at https://agi.safe.ai/ will be used to resolve this market. This market will resolve solely based on the displayed HLE Accuracy, regardless of the model's Calibration Error, chart position, other configuration scores, or any underlying granular or unrounded data presented elsewhere.
If multiple qualifying models are added to the Humanity's Last Exam results on the same calendar date (ET), the model with the highest HLE Accuracy will be used for resolution. Models added to the results on the calendar date following the initial qualifying model's first appearance will not be considered. If a model is first added to the Humanity's Last Exam results but is subsequently removed and not re-added, such that it is not displayed on the site at 12:00 PM ET on the calendar date following its first appearance, its appearance will not qualify as added to the Humanity's Last Exam results.
A qualifying model must be newly added to the Humanity's Last Exam results at https://agi.safe.ai/. Whether the model was previously released, publicly accessible, in beta, or otherwise available before appearing on the site is irrelevant for this market.
The resolution source for this market is the official Humanity's Last Exam website found at https://agi.safe.ai/. 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 site, this market will resolve based on the first subsequent instance at which the model's HLE Accuracy becomes available on the site. If it remains unavailable through the end of the seventh day after the qualifying model first appears on the site or if no qualifying model is added by December 31, 2026, 11:59 PM ET, this market will resolve to "No".
Abwicklungsquelle
https://agi.safe.ai/Abwickler
0x65070BE91...Anthropic’s September 1, 2026 launch of Claude Mythos 5.1 and Fable 5.1, which posted leading Humanity’s Last Exam scores of 59.1–65% on the official leaderboard, anchors trader expectations for the next Mythos-class model to clear 50–55% thresholds upon debut. These gains stem from continued scaling, tool-augmented reasoning, and targeted improvements in cybersecurity and biology domains, outpacing OpenAI’s GPT-6 Astra (54.7%) and other frontier entries clustered in the mid-40s to low-50s. HLE’s resistance to saturation and its 2,500 expert-authored questions across math, physics, and multimodal tasks keep outcomes sensitive to any new Anthropic release before year-end, with market-implied odds reflecting the lab’s recent cadence and competitive pressure from Google DeepMind and Meta.
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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