US approves Mythos 5 access for foreigners, holds Fable 5 pending review

The Trump administration cleared foreign-national access to Anthropic's Mythos 5 model but withheld approval for Fable 5. The capability-based approach—evaluating each model tier individually rather than imposing blanket restrictions—creates structural compliance burdens for AI labs and forces enterprise customers to plan around model-specific supply-chain delays.