Elon Musk's xAI Becomes SpaceX Subsidiary Amid Rapid AI Expansion
xAI, the artificial intelligence company founded by Elon Musk, now operates as a subsidiary of SpaceX and focuses on products like the Grok chatbot and the X social network. The rapidly growing firm also builds massive supercomputers and explores virtual assistant technologies.
xAI operates as an American artificial intelligence subsidiary of SpaceX, focusing on advanced AI development and social media integration. Founded by Elon Musk in March 2023, the company employs over 1,200 people and generates billions in revenue from its flagship products, including the generative AI chatbot Grok and the X social network.
The company builds massive technological infrastructure to support its AI ambitions, notably constructing the Colossus supercomputer and launching a dedicated data center business. Although xAI initially plans to develop a humanoid AI platform called Macrohard for a robotic workforce, the company currently focuses its efforts on developing advanced virtual assistants.
SpaceX officially acquires xAI in February 2026, transitioning the standalone corporation originally known as X.AI Corp. into a integrated subsidiary. Under Musk's leadership as CEO and Michael Nicolls as president, xAI continues to expand its product offerings like Grokipedia and Grok Build while leveraging the resources of its parent company.