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US orders Anthropic to halt foreign access to its most advanced AI models

Anthropic said the order could block access for foreign nationals and all customers, while the company disputes the government’s national security finding.

  • On Friday, Anthropic disabled access to Claude Fable and Claude Mythos for all customers following a U.S. government export control directive citing national security concerns.
  • Commerce Secretary Howard Lutnick sent a letter to Anthropic CEO Dario Amodei after Axios reported another company claimed it could perform a "jailbreak" on Mythos, alarming the administration about national security risks.
  • Anthropic argues the directive is based on a misunderstanding, noting the identified "jailbreaking" technique revealed only minor vulnerabilities also present in other models, including OpenAI's GPT-5.
  • The directive prevents access by any foreign national, whether inside or outside the United States, forcing Anthropic to disable the systems for all customers to ensure full compliance.
  • Anthropic launched the models on Tuesday, initially releasing Claude Fable publicly while restricting Claude Mythos to Project Glasswing participants, though other company models remain unaffected by the order.
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nexusnewsfeed.com broke the news on Friday, June 12, 2026.
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