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Claude Mythos

Claude Mythos is the same model as Claude Fable with fewer cyber and biology blocks, limited to organizations Anthropic verifies.

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Two black off-the-shelf robot arms on a wooden table reaching toward a colorful puzzle cube, with camera insets and an on-screen label reading Claude solves a puzzle cube

Two black off-the-shelf robot arms on a wooden table reaching toward a colorful puzzle cube, with camera insets and an on-screen label reading Claude solves a puzzle cube

Claude Fable 5.2 Drops to $8/$40 and Undercuts GPT-6 Astra. Its Robot Score Comes With a Footnote

November 10, 2026