Anthropic's Fable 5 AI Model Resumes Availability After US Export Control Lift

Anthropic's Fable 5 AI model, a public version of its Mythos system, has been reinstated following the U.S. government's decision to lift export controls. The model was initially suspended in June due to national security concerns regarding potential 'jailbreak' methods that could bypass safety protocols. Its return on July 1, 2026, came after two weeks of negotiations and the implementation of a new safety classifier, alongside an industry-wide jailbreak framework developed by Anthropic with Amazon, Microsoft, and Google.