US orders Anthropic to disable AI models for all foreign nationals
The US government has ordered AI firm Anthropic to suspend access to its Fable 5 and Mythos 5 models for all foreign nationals, citing national security concerns. Anthropic received the export control directive on Friday and immediately blocked access for affected users, including foreigners currently in the US and those working at the company.

Briefing Summary
AI-generatedThe US government has ordered AI firm Anthropic to suspend access to its Fable 5 and Mythos 5 models for all foreign nationals, citing national security concerns. Anthropic received the export control directive on Friday and immediately blocked access for affected users, including foreigners currently in the US and those working at the company. The Mythos 5 model is noted for its ability to detect software vulnerabilities, a capability that could be a concern if it falls into the wrong hands. The Fable 5 model, based on Mythos technology, has its cybersecurity and biotechnology capabilities blocked. Anthropic stated it received limited details regarding the specific security concerns from the government.
Article analysis
Model · rule-basedKey claims
5 extractedThe ban affects foreign nationals currently in the US, including those working at Anthropic.
Anthropic received the order on Friday and stated the letter did not explain the specific security concern in detail.
US government ordered Anthropic to suspend access to AI models Fable 5 and Mythos 5 for foreign nationals.
The AI models Fable 5 and Mythos 5 are being restricted due to national security concerns.
The AI behind Mythos 5 is adept at detecting software vulnerabilities, raising concerns it could become a cyberweapon.