Gemini V4.1 pretraining estimated at ~5e24 FLOPs, two weeks on 4K B300s
teortaxesTex · x · 2026-09-10
Citing an Astra estimate, teortaxesTex puts Gemini V4.1's pretraining compute on the order of 5e24 FLOPs, somewhat above V3 — roughly 3.5M H100-hours, or two weeks on 4,000 B300s. For a 64B-active, 3-4T-total model that's about two months of training. The quoted post speculates a V4.1 Ultra is coming, arguing Google wouldn't emphasize Flash as the smallest tier unless bigger versions exist.
Related event: Estimate: V4.1 Pretraining Took ~5e24 FLOPs(2 posts)→
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