Engineer Debunks Kimi K3 Memory Claims: Small State ≠ Flash Offload

AccBalanced · x · 2026-07-30

An engineer has strongly refuted recent claims that the Kimi K3 model's constant state leads to massive memory savings. While the recurrent state is indeed smaller, the system cannot simply reduce its memory dependence.

The core issue is that the model requires fetching, manipulating, and writing back memory multiple times for each linear layer and user. This high-frequency memory shuffling makes slower flash memory unworkable, increasing the necessity for faster, expensive memory like HBM. The narrative that a small state allows for easy flash offload completely ignores actual bandwidth bottlenecks.

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