Anthropic accused of ‘secret sabotage’ as Claude Fable 5 silently limits capabilities for AI researchers and developers (opens in new tab)

Covers 2 stories including System Card: Claude Fable 5 and Claude Mythos 5 [pdf]Covered by 9 sources including DEV Community, Yahoo Tech

A paragraph buried in Fable 5's 319-page system card revealed the model would silently downgrade its responses for certain AI development work — without telling users.

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Covered in 11 articles

DEV Community·

The AI They Said Was Too Dangerous — Is Now Inside the NSA

Discussed on DEV

DEV Community·

AI Dev Weekly #14: Claude Fable 5 Controversy, DiffusionGemma Breaks Text Generation, Apple Rebuilds Siri

Discussed on DEV

Yahoo Tech·

Anthropic accused of ‘secret sabotage’ as Claude Fable 5 silently limits capabilities for AI researchers and developers

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