The announcement of the $200 million contract to xAI comes less than a week after Grok came under fire for sharing antisemitic comments.

The U.S. Department of Defense will begin using Grok, the AI chatbot built by Elon Musk’s start-up xAI, the company announced in a post on Monday.

Built using huge amounts of computing power at a Tennessee data center, Grok is Musk's attempt to outdo rivals such as OpenAI's ChatGPT and Google's Gemini in building an AI assistant that shows its reasoning before answering a question.