AI news story

Anthropic shuts down Fable, Mythos models following Trump admin directive

Commerce dept. worries that a Fable 5 "jailbreak" could be a national security threat.

  • LLMs
  • Source: Ars Technica
  • Published: 2026-06-13

Editor's take

Anthropic has discontinued its Fable and Mythos large language models due to concerns raised by the U.S. Department of Commerce regarding potential national security risks, specifically the possibility of "jailbreaking" the Fable 5 model.

This decision highlights the growing tension between AI innovation and national security imperatives. The Commerce Department's intervention, stemming from a directive issued during the Trump administration, signifies a willingness to directly influence the development and deployment of powerful AI models if they are perceived to pose a threat, impacting not only Anthropic but also setting a precedent for other AI developers grappling with dual-use technologies.

Future developments to monitor include whether similar directives will be applied to other models capable of generating harmful content or facilitating malicious activities, and how AI companies will adapt their safety protocols and model release strategies in response to such regulatory scrutiny. The specific nature of the Fable 5 vulnerability and the technical measures Anthropic might implement to prevent future risks will also be critical.