U.S. government authorized Anthropic to partially restore Claude Mythos 5 access June 27, 2026 after two weeks of talks. Model redeployed to 100+ vetted US companies, government agencies, critical infrastructure operators.
June 12 suspension of Mythos 5 and Fable 5 followed national security concerns. Anthropic X post: “Mythos 5, our strongest cybersecurity model, can be redeployed to US organizations that operate and defend critical infrastructure.”
Approved orgs no longer need export license for foreign-national employees. Fable 5 remains suspended. Restrictions continue for all other companies. Reuters: Fortune 500, government agencies, Project Glasswing participants included.
Commerce Secretary Lutnick June 26 letter revised Mythos 5 only — Annex A approved entities, Anthropic foreign staff, US gov labs exempt from license.