Claude Fable 5.1 and Mythos 5.1: The System Card
Don't Worry About the Vase
Read the full articleAnthropic released Claude Fable 5.1 and Mythos 5.1, advanced AI models with improved safety, alignment, and capabilities. Fable 5.1 is seen as a leading model for frontier intelligence tasks, with ongoing comparisons to GPT-6-Astra. The models include detailed system cards covering risk, safeguards, alignment, and honesty assessments.

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