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Policy & Standards
3 min read

U.S. Security Order Halts Anthropic Fable 5 and Mythos 5 Access Abroad

A U.S. national-security export-control order has forced Anthropic to pause foreign access to Fable 5 and Mythos 5, including some employees, making frontier model availability a policy-controlled variable rather than a commercial choice. The event forces enterprise buyers to treat model procurement as supply-chain risk management: backup models, audit trails, and emergency switching are now as important as benchmarks and price.