Crypto investors and builders say the censorship of Anthropic's Fable 5 proves their long-running argument: that AI should run on decentralized networks no company or government can switch off.

Anthropic has taken Fable offline after a US order to stop selling to non-American users. Cyber experts and customers are calling for it to reverse the ban.

Fable 5 was built to help with advanced cybersecurity work. Its sudden shutdown highlights a dilemma at the heart of AI security: the same tools can aid both defenders and…