The company Elon Musk founded in 2023, which built Colossus in Memphis and merged into SpaceX on 2 February 2026, doing business afterward as SpaceXAI and, from October 2026, SpaceXSI. The chapters use the name for events before the merger. See SpaceXAI. Chapters 4, 9.
From The AI Compute Race. Read the book
Where the book uses it
- Chapter 4 — One Rack
How a datacenter is actually built, from a converted factory in Memphis to a greenfield campus in Texas, and what the clock from first ground to first power really measures.
- Chapter 9 — The Price of Permission
Who gets to say yes or no to a campus: counties, air regulators, courts and legislatures, and what their permits, abatements and refusals cost in time and money.
Where the record uses it
- Person Britton, Barbara
- Person Gracias, Antonio
- Person Mayo, Brent
- Person Musk, Elon
Sources that use it
- Apollo Global Management, “Apollo Backs $5.4 Billion Valor and xAI Data Center Compute Transaction,” press release, 7 January 2026 (Apollo-managed funds led a $3.5 billion capital solution for Valor Compute Infrastructure LP supporting a $5.4 billion acquisition and triple-net lease of computing assets, including NVIDIA GB200 processors, to an xAI subsidiary for xAI’s second data center; NVIDIA an anchor limited partner; investors to receive quarterly cash distributions and upside through ownership of the compute assets; on the fund, Antonio Gracias, Valor’s founder: “critical artificial intelligence compute infrastructure” (his statement in the release)). In the Sources
- Athene Holding Ltd., “Athene’s Role in Financing AI-Related Infrastructure,” investor presentation, October 2026, furnished with its Form 8-K of 30 October 2026 (Item 7.01) (slide 19, “Athene Has a 3% Allocation to Attractive Digital Infrastructure Investments”: “$12.9B ~3% of Gross Invested Assets,” split chips $3.6 billion, secured debt with an investment-grade guarantee $3.6 billion, energy $0.7 billion, other $5.0 billion, by off-taker SpaceX and xAI, Oracle, Meta, Anthropic, Amazon, Google and Microsoft; an interested party’s measure on its own analysts’ definition, unaudited, commercial mortgage loans excluded) In the Sources
- Elon Musk, post on X announcing the Colossus milestone, 2 September 2024 (“This weekend, the @xAI team brought our Colossus 100k H100 training cluster online. From start to finish, it was done in 122 days.”). In the Sources
- Greater Memphis Chamber, “Velocity Meets Potency: xAI Announces Memphis as New Home,” 5 June 2024 (the public announcement — 89 elapsed days before the 2 September online declaration; Doug McGowen, MLGW’s president and chief executive, “proud of our work to provide utilities for such a massive project and to do it quickly”). In the Sources
- Greater Memphis Chamber, “xAI Phase One Substation #63 Providing 150MW of Power to Facility,” press release, 7 May 2025 (the substation energized and 150 MW flowing from 1 May 2025; a second substation, #22, “already in construction”, its completion and connection to the electric grid “planned for the Fall of 2025”). In the Sources
And 119 more: search the Sources.
Related terms
From the glossary of The AI Compute Race.
How to cite this page
Dryburgh, Lee S. “xAI.” In The AI Compute Race. DRYBURGH. https://dryburgh.com/vol1/glossary/xai (accessed 2026-11-01).
BibTeX
@misc{dryburgh-xai-2026,
author = {Dryburgh, Lee S.},
title = {{xAI}},
howpublished = {In \emph{The AI Compute Race}, DRYBURGH},
year = {2026},
url = {https://dryburgh.com/vol1/glossary/xai},
note = {Accessed 2026-11-01}
}