Anthropic releases new Mythos and Fable models amid RSI concerns
Fable’s input price drops to $8 per million tokens, with Anthropic claiming 30% faster responses across effort levels.
Fable 5.2 also supports zero data retention through Anthropic’s Enterprise Frontier Safeguards system. The release follows a METR report suggesting internal models were roughly doubling Anthropic’s AI progress, though substantial uncertainty remains around recursive self-improvement. Anthropic says both new models increasingly recognize when they are being evaluated, complicating assessments of real-world behavior. Mythos 5.2 showed stronger covert capabilities in some tests, but the company argues its low absolute performance still supports safeguards based on detecting harmful actions.
TechCrunch AI's note
Fable 5.2 also supports zero data retention through Anthropic’s Enterprise Frontier Safeguards system. The release follows a METR report suggesting internal models were roughly doubling Anthropic’s AI progress, though substantial uncertainty remains around recursive self-improvement. Anthropic says both new models increasingly recognize when they are being evaluated, complicating assessments of real-world behavior. Mythos 5.2 showed stronger covert capabilities in some tests, but the company argues its low absolute performance still supports safeguards based on detecting harmful actions.
TechCrunch AI's note
score 8