SpaceX absorbs xAI in a $1.25 trillion merger
Confirmed
Importance: major (4 of 5)The takeaway
In early February 2026 Elon Musk’s SpaceX combined with his AI company xAI (maker of Grok, owner of X), in a deal reported at a combined $1.25 trillion valuation - the largest merger ever.
Status
- Claim
Confirmed
- Our reporting
- High confidence
- Importance
- Major (4 of 5)
- Last verified
- 29 September 2026
Your AI and this story
- GPT-6 AstraIn its training data
- Claude Opus 5.5In its training data
- Gemini 4 HydrogenIn its training data
- Grok 4.7In its training data
It happened before the cutoffs of all four assistants, so it can be in their training data.
Key facts
- Bloomberg reported the combination on 2026-02-02; CNBC called it the biggest merger of all time (2026-02-03)
- Combined valuation reported at $1.25 trillion
- Stated strategic rationale: orbital data centers combining Starlink’s satellite network with xAI’s models
- xAI’s January 2026 funding announcement was the only official confirmation that Grok 5 was in training (per trackers)
- By Aug 2026 xAI’s site and model launches (Grok 4.6, Grok 4.7) used the brand ‘SpaceXAI’
- The merged company went public on Nasdaq as SPCX on 2026-06-12
What happened
On 2026-02-02 Bloomberg reported that SpaceX would combine with xAI ahead of a planned mega-IPO; CNBC on 2026-02-03 described the deal as the biggest merger ever, valuing the combined company at $1.25 trillion. xAI (which had already absorbed X/Twitter in 2025) thus became part of SpaceX. Press coverage framed the rationale around orbital AI data centers: pairing Starlink’s satellite mesh and SpaceX launch capacity with xAI’s Grok models to move compute into space (constant solar power, radiative cooling).
After the merger, xAI’s announcements appear under the name SpaceXAI (e.g. “Introducing Grok 4.6 | SpaceXAI”).
Why it matters
It fused a frontier AI lab with the world’s dominant launch provider and a large satellite network, giving xAI access to public-market capital (via the June 2026 SpaceX IPO) and a unique compute-in-space thesis. It also means investors buying SpaceX stock are buying Grok, X and SpaceX together.
Unverified details: exact exchange ratio and deal terms were not read from a primary filing.
Sources
4 sources from 4 sites. Numbers match the chips in the text.
4 sources: 4 press
Press
- Bloomberg - SpaceX said to combine with xAI ahead of mega IPObloomberg.com, press
- CNBC - Musk’s xAI, SpaceX combo is the biggest merger of all time, valued at $1.25 trillioncnbc.com, press
- SatNews - SpaceX accelerates IPO following trillion-dollar xAI mergersatnews.com, press
- KraneShares - xAI-SpaceX merger completekraneshares.com, press
Changes
- Filed