Redeploying Claude Fable 5

Anthropic News ● Covered by 5 sources

Anthropic restored access to Claude Fable 5 and Mythos 5 after the US government lifted export controls that had been imposed on June 12 following a jailbreak vulnerability discovered by Amazon researchers. The new safety classifier blocks the reported bypass technique in over 99% of cases, though it increases false positives during routine coding tasks. Fable 5 becomes available globally starting July 1, with Anthropic, Amazon, Microsoft, Google and others now developing a shared industry framework for assessing AI jailbreak severity to standardize future responses.

Why it matters

Anthropic is redeploying Claude Fable 5 starting July 1 following the lifting of export controls, with updated cybersecurity safeguards and a new industry jailbreak framework.