Pentagon Cuts Ties with Anthropic Over AI Safety Concerns

Anthropic vows to challenge the supply chain risk designation in court

Mar. 3, 2026 at 3:15am

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A high-stakes dispute over military use of artificial intelligence has erupted between the Pentagon and Anthropic, a rising AI company. Defense Secretary Pete Hegseth has terminated the Pentagon's work with Anthropic, citing national security concerns after Anthropic's CEO Dario Amodei refused to back down on issues around the potential use of the company's products for mass surveillance or autonomous armed drones. Anthropic has vowed to sue over the supply chain risk designation, which would prohibit other defense contractors from doing business with the company.

Why it matters

This clash highlights the growing tensions between the military's desire to leverage AI technology and the concerns of AI companies about the ethical implications of their products being used for potentially harmful purposes. The outcome of this dispute could have significant implications for the balance of power in the AI industry and the rules governing military use of AI.

The details

The Department of Defense has moved to designate Anthropic as a supply chain risk, a designation typically used for companies with ties to adversaries like Huawei or Kaspersky. This would end Anthropic's up to $200 million contract with the Pentagon and prohibit other defense contractors from doing business with the company. Anthropic argues that Hegseth lacks the legal authority to stop business relationships with other defense contractors, and the company plans to challenge the designation in court.

  • On March 1, 2026, the dispute between the Pentagon and Anthropic erupted into public view.
  • The Pentagon has given the military a six-month grace period to phase out the use of Anthropic's technology that is already embedded in military platforms.

The players

Pete Hegseth

The Defense Secretary who terminated the Pentagon's work with Anthropic, citing national security concerns.

Dario Amodei

The CEO of Anthropic, who has refused to back down on issues around the potential use of the company's products for mass surveillance or autonomous armed drones.

Anthropic

A rising AI company that has vowed to sue over the Pentagon's supply chain risk designation, which would prohibit other defense contractors from doing business with the company.

Donald Trump

The former president who wrote on Truth Social that most government agencies must immediately stop using Anthropic's AI, but gave the Pentagon a six-month period to phase out the technology.

Sam Altman

The CEO of OpenAI, which has struck a deal with the Pentagon to supply its AI to classified military networks after Anthropic's dispute with the government.

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What they’re saying

“No amount of intimidation or punishment from the Department of War will change our position on mass domestic surveillance or fully autonomous weapons. We will challenge any supply chain risk designation in court.”

— Dario Amodei, CEO, Anthropic

“Disagreeing with the government is the most American thing in the world. And we are patriots. In everything we have done here, we have stood up for the values of this country.”

— Dario Amodei, CEO, Anthropic

“We have long believed that AI should not be used for mass surveillance or autonomous lethal weapons, and that humans should remain in the loop for high-stakes automated decisions. These are our main red lines.”

— Sam Altman

What’s next

The judge in the case will decide on whether to allow Anthropic's challenge to the supply chain risk designation.

The takeaway

This dispute highlights the growing tensions between the military's desire to leverage AI technology and the concerns of AI companies about the ethical implications of their products. The outcome could have significant implications for the balance of power in the AI industry and the rules governing military use of AI.