US Gov asks Anthropic to ban 'foreign national' access to Fable, Mythos

The US government issued an export control directive requiring Anthropic to block access to its two most advanced AI models, Fable 5 and Mythos 5, for all foreign nationals worldwide, citing national security concerns. Anthropic complied by suspending these models for all users globally, though the company disputes the government's reasoning, which appears related to a reported jailbreak (a method to bypass the model's safety restrictions) that Anthropic says it reviewed and found to be minor and not unique to their system.