Recent model releases from Anthropic have driven trader sentiment on Claude's Humanity's Last Exam performance, with Claude Fable 5 and Mythos 5 launching June 9 and quickly claiming leaderboard leads at 53–64% accuracy on the 2,500-question expert benchmark. These gains reflect iterative advances in reasoning and knowledge retrieval over prior Claude Opus variants, outpacing GPT-5 variants and Gemini previews amid intense frontier lab competition. However, Anthropic's June 12 suspension of access to both models introduces near-term uncertainty just 12 days before the June 30 cutoff, potentially constraining further evaluation, fine-tuning, or result submissions. Traders are watching for any resumption timeline or alternative Claude releases that could shift implied probabilities in this compressed window.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated$407,179 Vol.
30%+
Yes
35%+
Yes
45%+
No
50%+
No
55%+
No
$407,179 Vol.
30%+
Yes
35%+
Yes
45%+
No
50%+
No
55%+
No
The resolution source will be the official Humanity’s Last Exam leaderboard https://scale.com/leaderboard/humanitys_last_exam.
Market Opened: Jan 30, 2026, 12:00 AM ET
Resolver
0x65070BE91...Outcome proposed: Yes
No dispute
Final outcome: Yes
The resolution source will be the official Humanity’s Last Exam leaderboard https://scale.com/leaderboard/humanitys_last_exam.
Resolver
0x65070BE91...Outcome proposed: Yes
No dispute
Final outcome: Yes
Recent model releases from Anthropic have driven trader sentiment on Claude's Humanity's Last Exam performance, with Claude Fable 5 and Mythos 5 launching June 9 and quickly claiming leaderboard leads at 53–64% accuracy on the 2,500-question expert benchmark. These gains reflect iterative advances in reasoning and knowledge retrieval over prior Claude Opus variants, outpacing GPT-5 variants and Gemini previews amid intense frontier lab competition. However, Anthropic's June 12 suspension of access to both models introduces near-term uncertainty just 12 days before the June 30 cutoff, potentially constraining further evaluation, fine-tuning, or result submissions. Traders are watching for any resumption timeline or alternative Claude releases that could shift implied probabilities in this compressed window.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated



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