DeepSeek V4.1-Flash vs V4-Pro Benchmarked: 3x Cheaper but Slower and Weaker Output
Arindam_1729 · x · 2026-09-18
A same-task benchmark (Game / Design / Code, each model builds, self-reviews, up to 3 repair attempts) compared DeepSeek's two models. V4.1-Flash costs 3x less but V4-Pro was faster in all three modes, with better game visuals and much faster dashboard builds (15.3s vs 70.8s); Flash matched quality on design at lower cost. A quoted earlier test of Kimi-K3 vs GLM-5.2 on the same suite showed GLM-5.2 winning on speed, cost and visual quality.
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