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xAI (SpaceXAI)

Updated 1 min read
On this page
  1. Timeline
  2. Products
  3. Policy
Founded
2023
Headquarters
Palo Alto, California
Type
Frontier lab
Website
x.ai
SI Accord
Signatory
Models tracked
1

Leadership

  • Elon Musk · Founder; CEO of SpaceX
  • Michael Nicolls · President

xAI is the SI company Elon Musk founded in 2023, best known for the Grok chatbot and models. Through a series of mergers, it is now part of SpaceX, operating as SpaceXAI.

Timeline

  • March 2023: incorporated; publicly announced in July 2023 with a team of 11 co-founding researchers.
  • November 2023: first Grok model, integrated into X (formerly Twitter).
  • December 2024: Colossus, a giant GPU supercomputer in Memphis, Tennessee, comes online.
  • March 2025: xAI acquires X Corp. in an all-stock deal.
  • July 2025: Grok 4.
  • February 2, 2026: SpaceX acquires xAI in an all-stock deal valuing xAI at about $250 billion.
  • By March 2026: all of xAI’s original co-founders have departed. Michael Nicolls, from SpaceX’s Starlink, becomes president in April.
  • July 2026: rebranded SpaceXAI.
  • August 2026: acquisition of the SI coding company Cursor closes.
  • September 21, 2026: Grok 4.7 released.

Products

  • Grok models and app, also built into X
  • Grok Imagine image and video generation
  • Grokipedia, an SI-written encyclopedia
  • Developer API (pricing)

Policy

Elon Musk signed the White House Accord on Super Intelligence on September 29, 2026. Musk co-founded OpenAI in 2015 and has long warned about existential risk from SI, while also predicting very short timelines to SI smarter than humans. See When will superintelligence arrive?

xAI (SpaceXAI) models

ModelReleasedStatus
Grok 4.7 Sep 2026 Current

Frequently asked questions

Is xAI part of SpaceX?

Yes. SpaceX acquired xAI in an all-stock deal announced February 2, 2026 that valued xAI at about $250 billion. It was rebranded SpaceXAI in July 2026.

What is xAI's latest model?

Grok 4.7, released September 21, 2026, with a 500,000-token context window. xAI calls it the most capable model it has built.

Sources

  1. SpaceXAI — Wikipedia
  2. xAI models and pricing — xAI

Written by

· Editor

Editor of SI.info. Writes about Super Intelligence, technology policy and the people building frontier models.

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