xAI

Acquired

Palo Alto, California, United States · Founded 2023

1001-5000 employees · ~$6B+

Sourced & current · updated Oct 22, 20261 of 5 facts verifiedWebsite

AI company founded by Elon Musk in 2023 and maker of the Grok models. SpaceX acquired xAI on February 2, 2026; xAI owns X (formerly Twitter).

Where they sit

Stack tier: Ecosystem Services (A)

AI-Powered Platform

A leading frontier AI lab with a unique distribution advantage through ownership of X (formerly Twitter) and deep integration with Elon Musk's broader technology ecosystem, now operating under SpaceX.

Ownership

Parent: SpaceX

Subsidiaries

Grok