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Anthropic launched Claude Fable 5.2 and Mythos 5.2 on Nov 9, 2026. Fable 5.2 costs $8 per million input tokens and $40 per million output tokens, offering 30% faster speeds than predecessors. It scored 49.1% on FrontierCode 2.0 benchmarks. Mythos 5.2 lacks safeguards for authorized organizations only.
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