US Orders Anthropic to Cut Foreign Access to Its Two Most Advanced Models

The US Commerce Department on June 12, 2026 ordered Anthropic to immediately halt access to its most advanced models, Claude Fable 5 and Claude Mythos 5, for all foreign nationals, prompting Anthropic to disable both models for every user worldwide because such control was technically difficult to enforce. The unusual move, justified on national security grounds, is seen as carrying implications for the broader AI industry.