Technology & Science

U.S. Export-Control Order Halts Anthropic’s Fable/Mythos AI and Catalyzes Drive for Government-Defined AI Security Rules

On 12 June 2026 Washington invoked emergency export controls that forced Anthropic to shut off its Fable 5 and Mythos 5 models worldwide within 90 minutes, and within a week moved—alongside G7 tech leaders—to draft a U.S-led framework for testing and governing frontier AI security.

By Underlines Team

Focusing Facts

  1. Commerce Secretary Howard Lutnick’s 5:21 p.m. ET letter of 12 June 2026 barred access to the two models by any foreign national, compelling Anthropic to deactivate them for all users by 10 p.m.
  2. Anthropic had closed a $65 billion round in May 2026 at a $965 billion valuation, making this the first time a near-trillion-dollar product was disabled by direct U.S. order.
  3. At a 18 June 2026 G7 closed-door lunch in Évian, CEOs Dario Amodei, Demis Hassabis, and Sam Altman urged a U.S.-led coalition—explicitly excluding China—to set global AI standards.

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Perspectives in this article

  • US tech industry leaders and business press supportive of a US-led democratic AI coalition
  • US national-security officials and hawkish outlets defending the export-control crackdown
  • International and civil-liberties-minded commentators alarmed by US overreach
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