Anthropic pulls Fable 5, Mythos 5 offline after US export directive

Anthropic took its Claude Fable 5 and Mythos 5 AI models offline after a US export-control directive barred foreign nationals from using them. The company had warned of the models' dual-use cybersecurity capabilities, and the administration acted over concerns that Fable 5's guardrails could be removed to access Mythos 5.