DeepSeek v4.1-Flash lands on MathArena: near Qwen-3.8 math scores at a fraction of the cost

teortaxesTex · x · 2026-09-18

DeepSeek v4.1-Flash has been added to MathArena. It doesn't quite reach Qwen-3.8-level math performance — landing around Muse Spark 1.3 — but the purported 40-layer, 8/16B-active model delivers sensible results and is remarkably cheap.

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