DeepSeek V4.1 Flash reportedly a ~718B sparse model at ~500GB on disk

zainhas · x · 2026-09-10

teortaxesTex tempers excitement over the rumored DeepSeek V4.1 Flash with a spec breakdown: despite the "Flash" branding it's reportedly a 718B-parameter sparse model, similar in size to GLM 5.3 — a 552B mostly-FP4 backbone (307GB) plus 196B FP8 E4M3 Engrams, 500GB on disk, much larger than V4 Flash or GLM 5.3 Flash. Unofficial numbers, but the most concrete technical detail circulating on the leak.

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