Anthropic's Fable 5 and Mythos 5 AI models regain global access after US export controls lifted

In June 2026 the U.S. Department of Commerce imposed export controls on Anthropic’s advanced AI models Fable 5 and Mythos 5, citing a potential "jailbreak" vulnerability that could pose national‑security risks. The controls required foreign users to obtain export licences, effectively suspending access for about three weeks.

After direct talks between Anthropic executives and U.S. officials, including Commerce Secretary Howard Lutnick, the department announced on 5 July that the restrictions were removed. Anthropic confirmed that global access to Claude Fable 5 would be restored on its Claude platform, while Mythos 5 would be returned only to a vetted set of U.S. organisations.

Anthropic said it had fixed the reported vulnerability, though some tasks will now be redirected to lower‑performance models and usage pricing will increase. The episode unfolded amid broader tensions with the Trump administration, a supply‑chain risk label from the Defense Department, and ongoing legal challenges. The company is also moving toward a public listing, aiming for a valuation of $1.75‑$1.80 trillion and a potential $75 billion IPO.