Anthropic announced that the Trump administration, citing national security concerns, issued an export control directive requiring the suspension of access to its Fable 5 and Mythos 5 models for all foreign nationals — both within and outside the United States, including Anthropic's own employees. In order to comply with the relevant U.S. government directives, Anthropic has revoked access to Fable 5 and Mythos 5 for all users.