xAI
xAI is Elon Musk's AI company developing the Grok large-language-model family and the Colossus supercomputer cluster. Headquartered in the Bay Area, xAI absorbed X (formerly Twitter) in 2025 and has raised more than $25B across equity and debt rounds, with a late-2025 round valuing the combined xAI–X entity at roughly $200B.
Company snapshot
- Active
- Total funding
- $25B
- Funding rounds
- 7
- Last round (Series E)
- $10B
- Last round date
- Sep 2025
- Founded
- 2023
- Employees
- 1001-5000
- Headquarters
- Palo Alto, California, United States
Founders
Elon Musk
Industries
- Artificial Intelligence
- Generative AI
- Social Media
Notable investors
| Investor | Role |
|---|---|
| Sequoia Capital | Lead |
| Andreessen Horowitz | Co-investor |
| Valor Equity Partners | Lead |
| Fidelity Investments | Co-investor |
| Vy Capital | Co-investor |
| Kingdom Holdings | Co-investor |
| Lightspeed Venture Partners | Co-investor |
Frequently asked questions
How much funding has xAI raised?
xAI has raised $25B in total funding across 7 rounds.
What was xAI's most recent funding round?
xAI's most recent round was a Series E of $10B in Sep 2025.
When was xAI founded?
xAI was founded in 2023.
Where is xAI headquartered?
xAI is headquartered in Palo Alto, California, United States.
How many employees does xAI have?
xAI has 1001-5000 employees.
Who are xAI's investors?
xAI's notable investors include Sequoia Capital, Andreessen Horowitz, Valor Equity Partners, Fidelity Investments, Vy Capital, Kingdom Holdings.