US Gov asks Anthropic to ban 'foreign national' access to Fable, Mythos

Anthropic suspended access to its Fable 5 and Mythos 5 models for all users after a U.S. government export-control directive ordered blocking access by foreign nationals; Anthropic says the action was prompted by a reported narrow jailbreak but disagrees that the issue warrants a full recall and is working to restore access. Other Anthropic models remain available and the company reported the directive affects customers globally.