DeepSeek V4.1 Flash 552B (16B active)

Oct 3, 2026

Throughput

73.4 t/s gen · 1010.0 tokens/s prompt processing (prefill)Prompt processing measures input prefill speed; it does not tell you the time to first token.

Quant

Q3-G128-LSQ (MLX)

System RAM

256 GB

Summary

User asks whether oMLX benchmarks can be spoofed, citing a third-party oMLX benchmark entry for deepseek-v4.1-flash-q3-g128-lsq-mlx on an M5 Ultra with 256GB RAM, posted two days earlier, reporting about 73.4 tok/s generation and 1,010 tok/s prompt processing. The run is not the user's own; the figures come from a linked oMLX benchmark page and screenshot.

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