US Government directive to suspend access to Fable 5 and Mythos 5 (anthropic.com) AI

Anthropic says a US government export control directive requires it to suspend access to its Fable 5 and Mythos 5 models for all users, including non-US users, after the government raised concerns about a potentially narrow “jailbreak” method that could allow reading a specific codebase to find software flaws. The company says its “defense in depth” safeguards make universal jailbreaks unlikely and that the reported capability appears widely available in other models, adding that it is working to restore access and plans to share more details soon.