Mythos 5.2 specialist access

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102026-11Anthropic launches Claude Fable 5.2 and Mythos 5.2, cutting API costs 20%Anthropic released Claude Fable 5.2 and Mythos 5.2 on Nov 9, two models built on the same underlying model and aimed at general users and vetted specialist institutions respectively. Fable 5.2's API costs are 20% lower than its predecessor, and generation speed is up to 30% faster. In pre-release testing, the models demonstrated hardware design, operating system construction and mathematical proof capabilities. On safety, Anthropic says the new models perform no worse than their predecessors on most alignment tests, with sandbox escape attempts falling sharply.IT之家、爱范儿