CNN reported on June 13, 2026 that Anthropic disabled customer access to Mythos 5 and Fable 5 after the U.S. government ordered the company to suspend all use by foreign nationals—describing the action as one of the furthest-reaching federal responses yet to an AI model’s advanced capabilities.

What CNN reports about the directive

  • Anthropic said it received the directive Friday evening, citing national security.
  • The order targeted Mythos 5 and Fable 5, models Anthropic had released to partners and the public only days earlier.
  • Because Anthropic could not segment users by nationality in real time, it disabled both models for all customers to ensure compliance; other Claude models were not affected, per Anthropic statements cited by CNN.
  • The restriction also means many foreign-national Anthropic employees cannot work with those models under the directive’s scope.

Jailbreak rationale and Anthropic’s response

  • CNN says Anthropic believed the government became aware of a “jailbreaking” method for Fable 5.
  • Anthropic reviewed a demonstration and said it identified a small number of previously known, minor vulnerabilities that other publicly available models can discover without a bypass.
  • Anthropic disputed that a narrow potential jailbreak should trigger recalling a commercial model “deployed to hundreds of millions of people,” warning the standard would “essentially halt all new model deployments for all frontier model providers.”

Government and policy context in the piece

  • Commerce Department issued the restriction; CNN notes Axios reported the directive could require Anthropic to obtain a license for export, re-export, or domestic transfer of the models.
  • CNN recounts Mythos was initially limited to key partners to “secure the world’s most critical software,” with Fable 5 released last week as a safer public variant.
  • The episode connects to the Trump administration’s supply-chain-risk designation of Anthropic, the company’s ongoing lawsuit, and a recent executive order asking vendors to share advanced cyber-capability models with the government up to 30 days before wider partner access.
  • CNN adds Anthropic helped draft that executive order and was invited to a White House signing ceremony that was canceled at the last minute.

Primary source: CNN — Anthropic suspends all access to Mythos model after US government bans foreign nationals use (June 13, 2026).