Anthropic said on Friday it will “abruptly disable” its most advanced artificial intelligence (AI) models, Claude Fable 5 and Mythos 5, for all users after the U.S. government ordered it to suspend access to the models for foreign nationals, whether inside or outside the U.S., citing national security concerns.

The AI company said it received an order at 5:21 p.m. ET, instructing it to suspend