Claude Fable 5 Redeploys After Export Controls Lifted

The US government briefly restricted access to Anthropic‘s Claude Fable 5 and Mythos 5 after an Amazon researcher found a method to bypass Fable 5’s safeguards, prompting it to identify software vulnerabilities and produce exploit code.

The export controls, applied June 12 and lifted June 30, forced Anthropic to suspend both models for all users because they could not reliably verify nationality in real time.

The incident exposed a structural tension: how to release highly capable AI models without triggering government intervention over jailbreaks that turn out to be low-severity.