US Places Anthropic's Fable 5 and Mythos 5 Under Export Controls; Models Halted Worldwide

The US Commerce Department on June 12, 2026 issued an export-control order barring non-US persons from accessing Anthropic's frontier AI models Fable 5 and Mythos 5, and Anthropic halted both models for all users worldwide the same day. The company says it suspended access immediately to comply and that its other Claude models are unaffected. The shutdown took effect around 17:21 ET on June 12 globally, rendering the models unavailable across all major platforms including the Anthropic API and AWS Bedrock, and affecting millions of users.