Elon Musk
@elonmusk
The Colossus 2 supercomputer for @Grok is now operational.
First Gigawatt training cluster in the world. Upgrades to 1.5GW in April.
X Freeze@XFreeze· Jan 17, 2026xAI has officially become the first to bring a gigawatt-scale coherent AI training cluster online
That’s more electricity than the peak demand of San Francisco
While competitors are still drafting roadmaps for 2027, xAI is already operating at major city–level power today
The
12:23 PM · January 17, 2026 · 4M views
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