Anthropic drops Fable 5.2 and Mythos 5.2: 10 wild agentic examples
minchoi · x · 2026-11-10
minchoi rounds up Anthropic's new Claude Fable 5.2 and Mythos 5.2 releases with 10 examples: Fable 5.2 building an entire OS from scratch, controlling real robots, writing over 90% of Anthropic's core codebase changes, a 26x faster Python-to-Rust migration, solving two open theoretical physics problems, and 1,000 agents formalizing Fermat's Last Theorem in 30 hours.
Related event: Anthropic Launches Claude Fable 5.2 and Mythos 5.2(45 posts)→
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