Anthropic PBC vowed to legally contest a Pentagon decision to declare the company a threat to the US supply chain under an authority normally reserved for foreign adversaries, escalating a showdown with the Trump administration over artificial intelligence safeguards.

Anthropic chief executive Dario Amodei has said the company has "no choice" but to challenge in court the Pentagon's formal designation of the artificial intelligence firm as a risk to US national security.

Microsoft is the first major company to say it will keep using Anthropic models in its products.

A top Pentagon official says a fight with Anthropic centered on how the military could someday use artificial intelligence in autonomous weapons.

After refusing the Pentagon’s demand for unrestricted access to its AI, Anthropic nearly faced a “supply chain risk” designation that could have cut the company off from defense contracts.

Anthropic CEO Dario Amodei is reportedly back at the negotiating table with the U.S. Department of Defense after the breakdown of talks on Friday.

Anthropic’s moral stand on U.S. military use of artificial intelligence is reshaping the competition between leading AI companies but also exposing a growing awareness that maybe chatbots just aren’t capable enough for acts of war.