Anthropic releases two new models in the fifth Claude generation. Claude Fable 5 claims the top spot in nearly all benchmarks, while Claude Mythos 5 (no longer in preview) is still only available to select partners. Both models share the same base model. Fable 5 ships with conservative safety guardrails for general use. Mythos 5 drops those restrictions in areas like cybersecurity and is reserved for a small group of partners. Anthropic says Fable 5 beats every generally available model the comp...