Anthropic restores Claude Fable 5 as US lifts export controls — single filter now blocks prompt that could identify software vulnerabilities and write code to exploit them

Anthropic has restored global access to Claude Fable 5 and Mythos 5 after the U.S. Department of Commerce withdrew export controls. A single filter now blocks prompts that identify software vulnerabilities or write exploit code. This move is expected to boost market confidence and accelerate AI innovation and deployment in the US. The restoration of these AI models occurred one day after the US government lifted the restrictions, ensuring broader availability while maintaining specific security safeguards.