Anthropic disables advanced AI models after US order restricting foreign access

Anthropic, the company behind the Claude AI assistant, has disabled its most advanced AI models—called Fable and Mythos—after the US government issued an order restricting foreign access to such technology. The order, linked to the Trump administration, effectively blocks non-citizens from using these top-tier models, citing national security concerns. Anthropic said it is complying with the directive and has taken the models offline for users outside the United States.

The move has sparked reactions from the company's founders, the Amodei brothers, who have previously clashed with the administration over AI regulation. The decision affects users globally and marks a significant escalation in the US government's efforts to control access to cutting-edge artificial intelligence.