
Anthropic launched Claude Fable 5 to the public and Claude Mythos 5 under controlled access. Both models share the same foundation and pricing at $10 per million input tokens and $50 per million output tokens. Mythos 5 scored 80.3% on SWE-Bench Pro, outperforming prior models. Fable 5 includes new safeguards for high-risk areas like cybersecurity and biology.
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