[xAI, Elon Musk's AI company, reaches agreement with the Pentagon to use the Grok system in classified systems] BlockBeats reports, on February 25, according to Axios, Elon Musk's AI company xAI has reached an agreement with the Pentagon to use the Grok system in classified systems. This is the first AI model, apart from Anthropic Claude, to be granted access to the military's most sensitive intelligence and weapons development workflows.