US Export Control Order Halts Anthropic's Fable 5 and Mythos 5 for All Users

Anthropic on June 12 immediately suspended access to its most advanced models, "Claude Fable 5" and "Claude Mythos 5," for all users after receiving an export control directive from the US Commerce Department. The government ordered restrictions on access for all foreign nationals—including Anthropic's foreign employees—citing national security concerns, but because the company cannot verify users' nationalities in real time, it disabled both models across the board to ensure compliance. Other Claude models, such as Opus 4.8, are unaffected.