The NSA is reportedly using Anthropic’s new model Mythos

Despite the months-long feud between Anthropic and the Pentagon, the National Security Agency is using the AI company’s new Mythos Preview, according to Axios, which spoke to two sources with knowledge of the matter. Anthropic announced Mythos Preview at the beginning of April, describing it as a general-purpose language model that is “strikingly capable at computer security tasks.” But back in February, Trump ordered all government agencies to stop using Anthropic’s services after the company refused to budge on certain safeguards for military uses during contract talks.

The news comes days after Anthropic CEO Dario Amodei met with White House chief of staff Susie Wiles and other officials, reportedly to discuss Mythos. The White House later said the meeting on Friday was “productive and constructive,” though President Trump said he had “no idea” about it when asked by reporters, Reuters reports. According to Axios’ sources, the NSA is one of the roughly 40 organizations Anthropic gave access to Mythos Preview, and one said it’s “being used more widely within the department” too.

The company is still embroiled in a legal battle with the US government. Anthropic filed lawsuits against the Department of Defense in two courts in March after the Trump administration labeled it a “supply chain risk,” and the Pentagon filed a response shortly after. While Anthropic was granted a preliminary injunction by one court to temporarily block this designation, federal judges in the other denied its motion to lift the label.