After a “potential jailbreak,” Anthropic is closing access to its Mythos 5 and Fable 5 models in accordance with U.S. government national security orders.

• Access to Mythos 5 and Fable 5 has been removed by Anthropic
• This decision follows a directive from the US government
• A potential jailbreak is likely the reason for the access change

Under orders from the US government, Anthropic is removing access to its latest Mythos 5 and Fable 5 AI models. Access to other models is not affected and the company is working to “restore access as soon as possible.”

The White House directive, issued at 5:21 p.m. Eastern Time, sought to block access to next-generation AI models to “any foreign national, whether inside or outside the United States, including foreign Anthropic employees,” according to the Anthropic blog.