U.S. Orders Anthropic to Suspend Fable 5 and Mythos 5 Access for Foreign Nationals

Anthropic will abruptly disable its most advanced AI models, Claude Fable 5 and Mythos 5, for all users. This action follows a U.S. government export control directive ordering the suspension of access for foreign nationals, regardless of their location inside or outside the United States. The order includes foreign national Anthropic employees. Anthropic stated it received the instruction at 5:21 p.m. ET, though the government provided no specific details regarding the cited national security concerns.