The United States government has officially removed export restrictions on Anthropic's most advanced artificial intelligence models, Claude Fable 5 and Claude Mythos 5, after roughly three weeks during which they were flagged as national security threats by the Trump administration. The decision, announced today by Anthropic in a blog post, marks a turning point in the relationship between the AI company and the federal government.
Global access restored for Fable 5 and Mythos 5
With the lifting of curbs, Fable 5 is once again available worldwide to developers and enterprises, while Mythos 5, a model designed for defensive cybersecurity, had already been reactivated for US organizations as of June 26. Anthropic stated it is working with authorities to expand Mythos 5 access to a broader set of domestic and international partners under the Glasswing program, which allows cybersecurity researchers at trusted companies to use the model for defensive purposes.
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Safety measures that secured the green light
In a letter to Anthropic reviewed by Reuters and the New York Times, Commerce Secretary Howard Lutnick said the company would “no longer need a license for exports or in-country transfers of its Claude Mythos and Claude Fable AI models.” The letter acknowledged that Anthropic had “taken steps in close coordination with the US government to address the risks” posed by the models. These steps, detailed in a previous announcement, include new safety testing protocols and operational limitations. For more background, read the related article on Anthropic Adds New Security Measure for Fable 5 After Trump Administration Restrictions.
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Implications for AI governance and the global race
This episode highlights how AI regulation remains a hot topic, with delicate balances between innovation, national security, and economic competitiveness. The lifting of restrictions on Fable 5 and Mythos 5 comes after other models, such as Claude Opus 4.7, demonstrated capabilities that raised concerns. With the global green light, Anthropic can compete on an international scale, while the US government maintains oversight through programs like Glasswing. According to Ars Technica, the decision represents a compromise between the drive for innovation and security imperatives.
