AIVentureBeatabout 2 hours ago
Anthropic launches Claude Fable 5.1 and Mythos 5.1
14 min read
Anthropic released Claude Fable 5.1 and Claude Mythos 5.1, two names for the same underlying model. Fable 5.1 is the generally available version with production safeguards, while Mythos 5.1 is restricted to vetted cybersecurity and life-sciences organizations. Fable cache reads cost 75% less.
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