Anthropic pauses Fable 5 and Mythos 5 after US order
Technology
Anthropic just hit pause on its new AI models, Fable 5 and Mythos 5, after a US government order banned all foreign nationals, including some of Anthropic's own team, from using them.
The company called the situation a "misunderstanding" on X and reassured everyone that its other Claude models are still up and running.
Built on Claude Mythos preview
This all went down within days of Fable 5 and Mythos 5 being announced, with both described as cutting-edge AI, and Fable 5 noted for new safety safeguards.
They're built on the Claude Mythos Preview model from April 2026, which was mostly limited to select groups for cybersecurity work.
Anthropic says it's working to sort things out so people can access these new tools again soon.