Anthropic was the Pentagon's choice for AI. Now it's banned and experts are worried

The U.S. Defense Department banned Anthropic's AI models after a review by Pentagon technology leadership, designating the company a supply chain risk (a classification historically reserved for foreign adversaries) and requiring defense contractors to certify they don't use its technology. The decision surprised many officials who considered Anthropic's models superior and had deployed them in classified military networks, and defense experts worry it sets a troubling precedent while removing a trusted AI vendor that military personnel relied on.