Home to the US Defense Department, the Pentagon is one of the world's largest office buildings. The U.S. Department of Defense on Monday said it's granting contract awards of up to $200 million for artificial intelligence development at Anthropic, Google , OpenAI and xAI. OpenAI was previously awarded a year-long $200 million contract from the DoD in 2024, shortly after it said it would collaborate with defense technology startup Anduril to deploy advanced AI systems for "national security missions." In June, the company launched OpenAI for Government for U.S. federal, state, and local government workers. WATCH: US needs an allied strategy for AI investment in military and defense: Palantir