Statement on the comments from Secretary of War Pete Hegseth. Anthropic's response to the Secretary of War and advice to customers.

Anthropic announced it will legally challenge a forthcoming "supply chain risk" designation from the Department of War, a move initiated by Secretary Pete Hegseth via a social media post. The public dispute stems from an impasse in negotiations where Anthropic refused to permit its AI model, Claude, to be used for fully autonomous weapons and mass domestic surveillance. This confrontation places a leading AI developer in direct opposition to its military partner, drawing a distinct line on the application of its technology for national security purposes.

In its statement, Anthropic argued that current AI models are not reliable enough for use in autonomous weapons, posing a risk to both military personnel and civilians, and that mass surveillance constitutes a violation of fundamental rights. The company, which has been providing models for the U.S. government's classified networks since June 2024, called the designation legally unsound. Anthropic asserts the Secretary's authority is limited to Department of War contracts and cannot legally prohibit contractors from using Claude in other parts of their business.

This conflict signals a new dynamic in the relationship between AI firms and government agencies, where developers are increasingly willing to enforce their own ethical policies, even at the risk of losing major defense contracts. The outcome could influence how other AI companies negotiate terms for government and military use. For customers, Anthropic clarified that the designation would only impact the use of Claude on Department of War projects, leaving commercial accounts and other contractor work unaffected, though the dispute introduces significant uncertainty for defense firms reliant on third-party AI.

Anthropic's public confrontation with the Department of War marks a critical inflection point where an AI developer is leveraging its market power to enforce ethical red lines against a major government partner, testing the limits of both corporate policy and federal procurement authority.