xAI / SpaceX Super Intelligence
The Grok model family began at xAI. SpaceX acquired xAI in February 2026. The current company site and service terms use SpaceX Super Intelligence. This page retains xAI in its name so readers can connect earlier releases with the current provider.
Company & leadership
- Public company announcement
- 12 July 2023
- Current service company
- SpaceX Super Intelligence LLC, a Nevada company
- Principal place of business
- Austin, Texas, United States
- Parent company
- SpaceX; acquisition announced 2 February 2026
- Parent CEO
- Elon Musk
Founder
- Elon Musk
How xAI became part of SpaceX
The company timeline starts with its July 2023 announcement and the first Grok release that November. It published Grok-1 weights in March 2024 and opened its API beta in November 2024. The product range later expanded to voice, generated images, video and agent tools.
Current company and leadership
The October 2026 consumer terms identify SpaceX Super Intelligence LLC as the service company and give Austin as its principal place of business. SpaceX announced the xAI acquisition on 2 February 2026. Elon Musk is SpaceX's CEO. These facts describe the present parent and service entity; an old xAI office address does not establish the current headquarters.
Older API names can point elsewhere
The May 2026 migration retired several Grok 3, Grok 4 and Fast endpoints. Some old names now redirect to replacement models. Grok Code Fast 1 names map to Grok Build 0.1. Treat an alias as a routing name, and record the version returned by the service when comparing results.
Coverage of this catalog
Practical guidance. The entries cover the current named Grok API models reviewed here and the Grok-1 and Grok-2 weight releases. They exclude consumer subscription plans, Grok Bot workflows, Cursor models and unnamed text-to-speech service versions. A released weight model does not imply that an equivalent managed endpoint remains available.