By Echo Wang and Joey Roulette Feb 2 (Reuters) - Elon Musk said on Monday that SpaceX has acquired his artificial-intelligence startup xAI in a record-setting deal that unifies Musk's AI and space ambitions by combining the rocket-and-satellite company with the maker of the Grok chatbot.

SpaceX, the rocket and satellite maker led by Elon Musk, has acquired xAI, the artificial intelligence company controlled by Mr. Musk, according to a memo viewed by The New York Times and three people...