Artificial intelligence company Anthropic has filed a lawsuit against the U.S. Department of Defense and other federal agencies. The action stems from a "supply chain risk" designation imposed by the Trump administration, which has significantly hampered Anthropic's ability to conduct business with defense contractors.

The designation followed a breakdown in negotiations. Anthropic refused to permit its AI systems for use in mass surveillance of Americans or autonomous weapons. This refusal led the government to halt the adoption of Anthropic's systems, potentially jeopardizing a Pentagon deal valued at up to $200 million.

The Pentagon maintains that Anthropic's AI models must be capable of supporting all lawful military purposes. Despite attempts at last-minute negotiations by Anthropic CEO Dario Amodei to de-escalate tensions, a formal blacklist was largely unavoidable.

The San Francisco-based company asserts that the classification lacks legal basis. Anthropic argues the lawsuit is essential to safeguard its business operations and existing partnerships while continuing dialogue with the government.

A spokesperson stated, "Seeking judicial review does not change our longstanding commitment to harnessing AI to protect our national security, but this is a necessary step to protect our business, our customers, and our partners."

Meanwhile, Anthropic's consumer-facing AI application, Claude, has demonstrated strong performance. Following news of the Pentagon contract termination, Claude surpassed OpenAI's ChatGPT in Apple's App Store rankings. By early March, Anthropic reported over one million daily user sign-ups for Claude.

Major tech firms Google and Microsoft have confirmed they will continue to provide Anthropic's AI technology to their cloud customers for non-defense applications. Amazon has also indicated its intention to continue offering Anthropic's services outside of defense-related work.