The U.S. government has authorized a limited release of Anthropic’s advanced artificial intelligence model Mythos 5, allowing a small group of trusted U.S. cybersecurity companies and infrastructure providers to access the model after national security concerns led to its suspension earlier this month.Anthropic said Friday it has received approval to restore access to Mythos 5 for some organizations. The company added that it would continue discussions with U.S. authorities to expand the model’s availability and eventually restore public availability of its less powerful Fable 5 model.The decision marks a partial reversal of restrictions imposed on June 12, when the U.S. government ordered Anthropic to block access to Mythos 5 and Fable after discovering flaws in security measures designed to prevent abuse of the technology.
Limited rollout after additional safeguards
U.S. Commerce Secretary Howard Lutnick told Anthropic in a letter on Friday that the company has addressed risks associated with its advanced artificial intelligence models, CNN reported.“I have determined that appropriate safeguards are in place to allow certain trusted partners to access the Claude Mythos 5 model,” Lutnick wrote.Anthropic confirmed the development, saying: “We have received notification from the U.S. government that Mythos 5, our most robust cybersecurity model, can be redeployed to a small group of cyber defenders and infrastructure providers.”The company added: “We are working to provide services to approved providers and restore their access to Myth 5 as quickly as possible. We are pleased to see this development and will continue to work with the government to expand access to Myth 5 and make Fable 5 available for general use again.”Discussions between Anthropic and the government are expected to continue over the weekend with the aim of restoring access to Fable.
Artificial Intelligence regulation comes under increasing scrutiny
The restrictions on Anthropic come amid growing concerns that advanced artificial intelligence systems could be exploited by hackers and other malicious actors to quickly identify and exploit cybersecurity vulnerabilities.Earlier on Friday, rival OpenAI launched its GPT-5.6 model, access to which is restricted on a client-by-client basis under government validation.The moves follow an executive order signed by U.S. President Donald Trump earlier this month establishing a voluntary federal review process for advanced artificial intelligence models to assess national security risks before release.However, the White House has not revealed details about how the review system will work or which artificial intelligence models will fall within its scope.Anthropic’s relationship with the Trump administration has been strained in recent months.The company had previously opposed allowing its technology to be used for mass surveillance and autonomous weapons, a dispute that led the Pentagon to cancel its contract with Anthropic, AFP reported.The government earlier designated Anthropic a “supply chain risk” over disagreements over military applications of its artificial intelligence technology, effectively blacklisting the company. Anthropic subsequently challenged that designation in court and scored at least one early legal victory in the ongoing case.The export restrictions and subsequent negotiations highlight the lack of a consistent regulatory framework for advanced artificial intelligence, even as the United States seeks to maintain technological advantages over rivals such as China.
