Anthropic said on Friday it has been ordered by the US government to suspend access for all foreign nationals to its Fable ‌5 ⁠and ⁠Mythos 5 artificial intelligence models, citing national security concerns.

The company said it received the export control directive on Friday from the government, which gave no specific details of its ⁠national security ‌concern.

It is Anthropic's understanding, however, that the government believes ⁠it has become aware of a method of bypassing, or "jailbreaking," Fable 5, according to the company's statement.


"The net effect of this order is that we must abruptly disable Fable 5 and Mythos ‌5 for all our customers to ensure compliance. Access to all other Anthropic ⁠models will not be affected," Anthropic said.

Anthropic added that it believed there was ​a "misunderstanding" and that it is working to restore access to the models as soon as possible.