Musk reveals xAI's compute fleet: Colossus 2 packs 550k GB200/GB300 and keeps scaling
MickeySteamboat · x · 2026-09-25
Elon Musk disclosed the exact composition of xAI's supercomputer clusters: Colossus 1 holds 150k H100, 50k H200 and 30k GB200, while Colossus 2 currently runs 110k GB200 and 440k GB300.
He also laid out an expansion timeline: another 220k GB300 will be fully operational next week, another 220k in November, and possibly yet another 220k by late December — potentially pushing Colossus 2 close to a million GPUs by year-end.
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