Three days after Fable 5 and Mythos 5 launched, the US government grounded them.
Thursday, 5:21 PM ET. Commerce Secretary Howard Lutnick's letter reached Dario Amodei with an immediate order: suspend all access to Fable 5 and Mythos 5 for any foreign national, inside or outside the United States, including Anthropic's own employees. Anthropic took both models offline for every customer worldwide.
The trigger, per Axios: a claim from another company that it had jailbroken Mythos, alarming the administration about national security risks. The Commerce Department's position was that a technique existed to bypass Fable 5's safety classifiers, which gate access to Mythos's cybersecurity capabilities. Anthropic disputes the characterization and says it is working to restore access as soon as possible.
Fable 5 and Mythos 5 launched June 9. That is 72 hours from general availability to global suspension, with no advance notice to Anthropic, and a restriction scope broad enough to cover the company's own employees worldwide.
Every confirmed Anthropic development in the past 24 hours, with primary sources.
language setting). Added footerLinksRegexes setting for regex-matched link badges in the footer row. Improved Bedrock credential caching to respect credential-native expiration rather than a fixed 1-hour window. Fixed availableModels enforcement so alias picks cannot redirect to blocked models. Fixed auto mode failing on Fable 5 for organizations without Opus 4.8 enabled. Fixed hook if conditions for Read/Edit/Write file path patterns. Multiple Remote Control and background session stability fixes.
claude update or reinstall.
Daily digest at 9 PM ET. Weekly magazine every Friday morning. Six labs, one feed. No spam, one-click unsubscribe.