Ask the model.
Grok
In productionThe chatbot, inside X and in other products. Treat model claims as marketing until a test you can rerun says otherwise.
05 · Ask the model.
xAI
xAI trains Grok and builds the machines under it. In February 2026 Reuters reported a combination with SpaceX. The product is still its own machine on this desk.
In productionGrokReportedSpaceX combination
Rack the chips.
Colossus
ReportedThe training cluster's public name. GPU counts change in posts. Cite the post, don't memorize it.
Own the wafer.
Terafab
DiscussedSame rumor as on the Tesla page. A fab that would feed the cluster. Not a street address.
Open questions
- What the SpaceX combination actually changed: product, cap table, or only a press line.
- Colossus power and where the building sits.
On the desk
ReportedxAI · Reuters / Bloomberg · 3 Feb 2026
SpaceX and xAI combination reported.
Reuters reported that SpaceX and xAI were combining, at a stated $1.25 trillion value for the enlarged company. Bloomberg's account, carried the same week, described it as Musk's announcement of a merger ahead of an expected IPO. This is not a Tesla deal.