The US allows Anthropic to release a limited number of Mythos 5 models

Reuters citing the content of a letter dated June 26 from US Secretary of Commerce Howard Lutnick, which said Anthropic had coordinated with the US government to handle “threats related to the mentioned models” since receiving the notice two weeks ago.

A source said more than 100 companies and organizations have access to Mythos 5, including many Fortune 500 businesses.

“For two weeks, we have worked diligently to ensure that the United States remains a world leader in AI and ensures our own security,” a US Department of Commerce spokesperson told the website. Traffic lights.

The White House and Anthropic have not commented on the information.

CNBC The new decision marks an important step in negotiations between President Donald Trump’s administration and the AI ​​company, revolving around the Mythos 5 and Fable 5 models.

Anthropic in early June announced Fable 5 and Mythos 5, two models that the company advertises as the most modern by many scales in the AI ​​industry. They are built on the Claude Mythos Preview platform, which once made US officials worried because of its advanced cybersecurity capabilities.

On June 12, Anthropic received instructions from the US government to suspend access to Fable 5 and Mythos 5 for “foreign citizens, whether in the US or other countries, including Anthropic employees”. This AI startup said that the US government cited “national security” reasons, but did not provide details.

David Sacks, co-chair of the US President’s Council of Science and Technology Advisors, said “a trusted partner” of the US government and Anthropic tested Fable and discovered a jailbreak method to overcome the security barrier that separates this commercial model from Mythos’ unlimited cybersecurity capabilities.

The US government then asked Anthropic to patch or recall Fable 5 until it was resolved, but CEO Dario Amodei reportedly refused. “The government then had to reluctantly issue export control instructions. They were ready to lift restrictions as soon as the problem was resolved,” he said.

Sacks criticized Anthropic’s actions as inconsistent with the position of a laboratory that always puts safety first, and has called for Mythos to be regulated as a cybersecurity weapon.

He said the decision to restrict was not related to previous conflicts between Anthropic and the government, adding that Washington always valued this AI startup’s technology and considered the problem “very easy to solve”.

This is the latest friction between Anthropic and the US government since the conflict with the Pentagon earlier this year. The US Department of Defense then declared Anthropic a “supply chain risk”, meaning the company was considered a threat to national security. This designation is usually only used for America’s foreign competitors, requiring defense businesses to certify that they do not use the Claude model in contracts with the military. Anthropic sued President Donald Trump’s administration to overturn this decision, and the proceedings are not yet over.