xAI

Founders

• Elon Musk (South Africa · ♂) — Disillusioned with OpenAI's direction after co-founding it, he launched xAI in 2023 to build a 'maximally truth-seeking' AI (Grok) as a rival lab.

Team & hubs

Around 4,781 people on the team.

In the network

xAI sits squarely in the a16z/Sequoia AI infrastructure cluster, backed by Andreessen Horowitz, Sequoia Capital, NVIDIA, Fidelity, BlackRock, and SpaceX across $39,135M raised over 6 rounds. Through shared capital it overlaps most heavily with the frontier-model labs OpenAI (4 shared investors) and Anthropic (4), and connects to the data and developer-tooling tier via Databricks (3), ElevenLabs (3), Crusoe (3), and Stripe (3), with a lighter tie to Kalshi (2). That overlap, plus a connection score of 70, places it at the center of a tightly cross-funded cluster of US AI and data-centre companies. The 4,781-person team is concentrated in the San Francisco Bay Area (25%) and New York (20%).