OpenAI has struck a deal for the Department of Defense to use its AI models, CEO Sam Altman announced late on Friday. The news came just hours after the Pentagon severed its relationship with AI rival Anthropic over the company's concerns about how the technology would be used in surveillance and autonomous weapons. The Department of Defense is now moving to designate Anthropic a supply chain risk, a significant escalation by the government that could threaten how the AI startup does business