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200,000 chips
Held by Grok 4. Set 2025-07-09, and has stood for 447 days. Written down here 2026-09-07.
A frontier model is trained on one connected machine assembled out of many chips, all working the same problem at once and all obliged to talk to each other constantly. This is the number of chips in the largest such machine anyone has disclosed. The hard part is not buying them. It is power, heat, and keeping tens of thousands of components in step for weeks without the entire run collapsing when one of them fails, which it will. This is the most physical number on the page. Everything else here is a score obtained by a program; this one is a building, with its own substation, and it can be photographed from the road.
That description was written when this frontier was opened, on 2026-09-07, and is never rewritten. Where it and the number above it disagree, the number is the reading and the description is history.
Where to check it: https://epoch.ai/data/notable-ai-models
The program reads it from https://epoch.ai/data/large_scale_ai_models.csv, which is the same figure in a form a script can parse.
Last checked: 2026-09-27
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