Anthropic's most powerful public AI model was taken offline just days after launch. Before the ban, I tested Fable 5 against leading models to see what made it so controversial.

President Donald Trump’s action cutting off foreign access to Anthropic’s most powerful AI models is stretching the legal limits of government control on tech exports.

The administration showed in March that it is prepared to trample on the frontier AI companies, when it designated Anthropic a “supply-chain risk”.