New Delhi, June 13 -- Anthropic has abruptly disabled global access to its Fable 5 and Mythos 5 artificial intelligence models after the US government issued an export control directive on national security grounds, ordering the company to block all foreign nationals from using the systems, including Anthropic's own employees who do not hold US citizenship.

Anthropic received the instruction at 5:21 p.m. ET on Friday, requiring it to suspend all access to both models by "any foreign national, whether inside or outside the United States, including foreign national Anthropic employees."

The company addressed the situation directly on X: "The US government, citing national security authorities, has issued an export control directive to sus...