On the afternoon of June 12 the US government invoked national-security authorities to issue an export-control directive ordering Anthropic to suspend all access to its two most capable models, Fable 5 and Mythos 5, for any foreign national anywhere in the world, explicitly including Anthropic's own foreign-national employees. Because compliance at that scope cannot be enforced selectively, Anthropic disabled both models for every customer globally; all other Anthropic models remain available. The order arrived at 5:21pm Eastern and, by Anthropic's account, contained no specific technical detail about the concern.
Anthropic's understanding is that the government had been shown a method of jailbreaking Fable 5. The company says it reviewed a demonstration of the technique and found it surfaced only a small number of previously known, minor vulnerabilities, flaws it argues other publicly available models, including OpenAI's GPT-5.5, can discover without any bypass at all. To date Anthropic says it has received only verbal evidence of a narrow, non-universal jailbreak, essentially asking the model to read a codebase and fix software flaws, a capability it says defenders use every day.
The directive lands three days after Fable 5 and Mythos 5 shipped, and it is pointed precisely because Anthropic had built an unusually loud safety case around the launch. The company described defense-in-depth safeguards it called stronger than any previously deployed model's, so conservative that users complained they were overbroad, backed by thousands of hours of red-teaming with the US government, the UK AI Safety Institute and outside groups, plus a mandatory thirty-day data-retention policy specifically to detect and shut down jailbreak attempts. Anthropic's position is that perfect jailbreak resistance is not achievable by any provider today, that it said so explicitly at launch, and that recalling a model deployed to hundreds of millions of people over a single narrow jailbreak would, if applied as an industry standard, halt all new frontier deployments.
Anthropic is complying with the legal order while openly disputing it, characterizing the episode as a likely misunderstanding it hopes to resolve quickly and promising more detail within twenty-four hours. It reiterated its public stance that government should have statutory power to block unsafe deployments, but through a process that is transparent, fair, clear and grounded in technical facts, which it says this action was not. The precedent is the real story. For the first time a US administration has used national-security export authority to pull a commercial frontier model off the global market, and the technical legitimacy of the underlying claim remains contested.
- TechCrunch framed it as Anthropic's safety warnings backfiring: its own dangerous-capability posture handed the government the hook to pull the models.
- Latent Space's AINews stressed the precedent: models revoked for all customers worldwide, not just US-government users, three days after launch, on still-unverified grounds.
- Anthropic emphasized the evidence was only verbal and that GPT-5.5 and other public models surface the same vulnerabilities without any jailbreak.