Anthropic said it has received approval to restore access to Mythos 5 to a select group of organizations
The US government has authorized a limited release of Anthropic’s advanced AI model, Mythos 5, allowing a small group of trusted US cybersecurity firms and infrastructure providers to access it after concerns over national security led to its suspension earlier this month.Anthropic said Friday that it has received approval to restore access to Mythos 5 to a select group of organizations. The company added that it will continue discussions with US authorities to expand access to the model and eventually restore public availability for the less powerful Fable 5 model.The decision represents a partial reversal of restrictions imposed on June 12, when the US government ordered Anthropic to disable access to both Mythos 5 and Fable after identifying vulnerabilities in safeguards designed to prevent misuse of the technology.
Limited offering after additional guarantees
According to CNN, US Commerce Secretary Howard Lutnick informed Anthropic in a letter on Friday that the company had addressed risks associated with advanced AI models.“I have determined that there are appropriate safeguards in place to allow certain trusted partners access to Cloud Mythos Model 5,” Lutnick wrote.Anthropic confirmed the development, saying: “We have received notification from the US government that Mythos 5, our most powerful cybersecurity model, can be redeployed to a small group of cyber defenders and infrastructure providers.”
“We are working to get the provider pool approved and restore access to Mythos 5 as quickly as possible. We are pleased to see this progress and continue to work with the government to expand access to Mythos 5 and make Fable 5 available for public use again,” the company added.Discussions between Anthropic and the government are expected to continue over the weekend with the aim of restoring access to Fable as well.
Regulation of artificial intelligence is under increasing scrutiny
The restrictions imposed on Anthropic came amid growing concerns that advanced AI systems could be exploited by hackers and other malicious actors to quickly identify and exploit cybersecurity vulnerabilities.Earlier on Friday, rival OpenAI launched a GPT-5.6 model with access restricted on a client-by-client basis under government approval.The moves follow an executive order signed by US President Donald Trump earlier this month to create a voluntary federal review process for advanced AI models to assess national security risks before they are released.However, the White House has revealed few details about how the review system will work or which AI models will fall under its scope.Anthropic’s relationship with the Trump administration has become strained in recent months.According to Agence France-Presse, the company had previously opposed allowing its technology to be used for mass surveillance and autonomous weapons, a dispute that prompted the Pentagon to cancel contracts with Anthropic.Management had previously classified Anthropic as a “supply chain risk” due to controversies related to military applications of its AI technology, effectively blacklisting the company. Anthropic subsequently challenged the classification in court and secured at least one early legal victory in the ongoing case.Export restrictions and subsequent negotiations have highlighted the absence of a consistent regulatory framework for advanced artificial intelligence, even as the United States seeks to maintain its technological advantage over competitors such as China.