Anthropic has announced that Claude Fable 5 and Claude Mythos 5, its most advanced AI models, will return to global users after the US Department of Commerce lifted export restrictions. The company will begin restoring access from July 1, ending a ban that lasted just over two weeks.
The restrictions were first introduced on June 12 after the US government raised national security concerns about the powerful AI models. Anthropic was ordered to stop exporting Claude Fable 5 and Mythos 5 to users outside the United States unless it received a special license. As a result, international customers and some of the company’s foreign employees temporarily lost access.
Confirming the decision, Anthropic posted on X, “We’ve received notice that the Department of Commerce has lifted export controls on Claude Fable 5 and Mythos 5. We’ll begin restoring access tomorrow and will share an update soon. We’re grateful to our users for their patience, and to everyone who worked with us on redeploying the models.”
Why were the models restricted?
The US government believed the advanced capabilities of the models could pose security risks. Claude Fable 5 is designed for complex reasoning, coding, and advanced problem-solving, while Claude Mythos 5 is built for enterprise and cybersecurity tasks, including identifying software vulnerabilities. Officials feared these powerful features could be misused by malicious actors to discover and exploit security weaknesses.
The government also reviewed reports that some users had found ways to bypass certain safety protections in Claude Fable 5. Although Anthropic said these “jailbreak” methods were limited and similar techniques existed for other AI models, authorities decided to impose temporary export controls while reviewing the technology.
US Commerce Secretary Howard Lutnick said, “Over the past two weeks, we have worked closely with Anthropic to analyse and approve Fable 5 to ensure alignment across the US government and strengthen America’s leadership in AI.”
Anthropic also agreed to strengthen security measures, cooperate with the US government on AI safety standards, and report any malicious use of its models.
