US directive pulls Fable 5 offline three days after launch

On 12 June 2026 Anthropic received a US export-control directive barring access to Fable 5 and the restricted Mythos 5 by any foreign national. The order was reportedly delivered as a letter from Commerce Secretary Howard Lutnick to CEO Dario Amodei (Bloomberg/WSJ). Because the scope covers foreign nationals everywhere — including Anthropic's own non-US staff — the only compliant path was a full shutdown for all users. Every other Anthropic model is unaffected. The directive is the first known use of export-control authority to disable a deployed consumer AI product already in active use, not a future distribution or hardware export.

Anthropic's public account is precise and blunt: it received only verbal notice of a 'potential narrow, non-universal jailbreak.' The demo it was shown surfaced a handful of previously-known minor vulnerabilities. The company disagrees the issue meets the bar for a model recall and says so publicly. The government's written technical reasoning has not been published. Anthropic's rebuttal names OpenAI's GPT-5.5 as sharing the same underlying capability — that model is still running, with no comparable directive reported. The timing sharpens the stakes: Anthropic is reportedly weeks from a major IPO, giving it every incentive to settle the dispute quickly and quietly — which is precisely why the unanswered questions are worth pressing now, before a resolution closes the window.