company
xAI
xAI is an American artificial intelligence company founded by Elon Musk in March 2023. It makes the Grok family of AI models and, through subsidiaries, operates the X social network. SpaceX acquired xAI in February 2026, and the company was later rebranded as SpaceXAI and then SpaceXSI.
President
Michael Nicolls
Key facts
- Founded
- March 9, 2023source
- Ownership
- Acquired by SpaceX in February 2026 at a valuation of US$250 billionsource
- Later names
- Rebranded as SpaceXAI in July and as SpaceXSI in October, after the SpaceX acquisitionsource
- Revenue
- US$3.2 billion (2025)source
- Employees
- 1,200+ (2025)source
- Headquarters
- San Francisco Bay Area (as of May 2026)source
WYDE coverage of xAI
Newsletter
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AINeuralink's VOICE Trial Turns a Participant's Thoughts Into His Own Voice, Using xAI's Grok Voice
Sep 18, 2026 · 2 min read
Sources
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