Anthropic said it abruptly disabled its two most capable artificial intelligence (AI) models, Fable 5 and Mythos 5, for all customers worldwide after the U.S. government ordered it to cut off access for any foreign national, citing national security. Key TakeawaysThe U.S. ordered Anthropic on June 12 to cut foreign access to Fable 5 and Mythos 5 over national security concerns.Anthropic disabled both models worldwide for hundreds of millions of users, disputing the order’s rationale.Defillama tracks 14 pre-IPO perp markets, including Anthropic, so the shutoff is a live test for onchain AI bets.