Anthropic restores global access to Claude Fable 5 after export controls lifted

Redeploying Fable 5

US export controls on Claude Fable 5 and Mythos 5, imposed June 12, were lifted June 30. Fable 5 returns globally July 1. The controls followed an Amazon researcher's report showing a jailbreak that let Fable 5 identify and demonstrate a software vulnerability exploit. Anthropic confirmed older models including GPT-5.5 and Kimi K2.7 could do the same—no unique Mythos-level capability was exposed. A new safety classifier now blocks the reported technique in over 99% of cases, though false positives on routine coding requests will increase. Anthropic is also working with Amazon, Microsoft, and Google on a shared industry framework for assessing jailbreak severity, and deepening pre-release testing collaboration with the US government.

Why it matters: Anthropic officially announces the lifting of export controls on Fable 5 and its global redeployment — a major status change for a flagship model with strong cross-source signal. All three HKR axes hit: the reversal creates suspense, the timeline and usage numbers are concrete...