AI Lab Profile · United States
xAI
xAI is independent AI lab (merged with X Corp in 2025), founded in 2023 and headquartered in Palo Alto, California, USA. Grok models integrated with X; Musk-founded; Colossus-scale compute.
Founded 2023 · Palo Alto, California, USA · x.ai · Financials: Epoch AI (as of 2026-08-17) · Updated 2026-08-17
Overview
To understand the true nature of the universe.
Founded in 2023 by Elon Musk with a team of researchers recruited from DeepMind, OpenAI, Google and other labs.
Flagship AI models
Key models released by xAI, most recent last. Dates are the public release month where confirmed.
- 2023-11 Grok-1First Grok model; weights later open-sourced under Apache 2.0
- 2025-02 Grok-3Trained on the Colossus supercomputer
- 2025-07 Grok 4Reasoning-focused frontier release
- 2026-07 Grok 4.5Latest release; positioned as a top-tier coding and agent model
Funding & financials
Quantitative figures from Epoch AI's Data on AI Companies (CC BY 4.0). Each is the latest dated figure Epoch holds; private labs disclose selectively, so undisclosed values are marked as such — never estimated.
| Total equity funding | $37.0bn | |
| Latest valuation | $230.0bn | as of 2026-01-06 |
| Est. annualised revenue | $428m | as of 2025-09-30 |
| Staff | 300 | as of 2025-03-12 |
| Active users | 64m | |
| Revenue / employee | $1m |
Key facts
- In March 2025 xAI acquired X (formerly Twitter) in an all-stock deal, combining the two companies under xAI Holdings.
- Operates the 'Colossus' supercomputer cluster in Memphis, Tennessee, built around 100,000+ GPUs.
- Open-sourced the Grok-1 base model weights (Apache 2.0) in March 2024.
- Grok is tightly integrated into the X social platform as its native assistant.
Frequently asked
- When was xAI founded?
- xAI was founded in 2023, by Elon Musk. It is headquartered in Palo Alto, California, USA.
- How much funding has xAI raised?
- xAI has raised about $37.0bn in total equity funding, at a latest valuation of about $230.0bn (2026-01-06). Source: Epoch AI.
- What are xAI's main AI models?
- xAI's notable models include Grok-3, Grok 4, Grok 4.5. Grok models integrated with X; Musk-founded; Colossus-scale compute.
Sources
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Affärslivet Research. (2026). xAI — company profile. Affärslivet. https://xn--affrslivet-s5a.com/en/ai/labs/xai
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