Back-of-the-napkin estimate breaks down Kimi K3 training cost

yaroslavvb · x · 2026-07-22

A back-of-the-napkin estimate breaks down the likely training cost of Kimi K3 using chip counts, grid power, and rental-plus-energy costs.

The accompanying chart compares multiple GPU/accelerator options and their estimated costs, highlighting how the economics of large-scale model training depend heavily on hardware availability and power consumption.

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