Anthropic announced on July 1, 2026, that it will soon restore global access to its most advanced AI models, Claude Fable 5 and Claude Mythos 5, after the US Department of Commerce lifted export controls previously imposed earlier this month. The company posted on X, "We've received notice that the Department of Commerce has lifted export controls on Claude Fable 5 and Mythos 5."

Earlier in June, US authorities had abruptly blocked access to these models on national security grounds after identifying vulnerabilities in the safeguards designed to prevent misuse. On June 26, Secretary of Commerce Howard Lutnick wrote to Anthropic acknowledging that the company had worked closely with the US government to address risks associated with these "Covered Models," according to Politico.

The letter indicated that the Trump administration was satisfied, at least temporarily, with the steps Anthropic had taken in coordination with the government to mitigate risks related to Claude Mythos 5 and Claude Fable 5. Just four days prior to the lifting of restrictions, Anthropic had received authorization to allow a limited group of American cybersecurity firms access to Mythos 5.

This development follows an executive order issued on June 2 by the Trump administration, which called for federal action on AI and cybersecurity, including establishing a voluntary framework for private companies like Anthropic and OpenAI to test and release powerful "frontier" AI models in collaboration with the government.

OpenAI CEO Sam Altman commented on the process, stating, "This isn't quite the process that we think is optimal," in a post on X alongside the launch of GPT-5.6. Like Anthropic, OpenAI has complied with Washington's requests to restrict the release of GPT-5.6 to a limited set of approved partners.

At the AWS summit in Washington, officials highlighted ongoing discussions with national security and economic advisers regarding the impact of frontier AI models.

Sources