DeepSeek-Math and Gemini 3.1 Flash don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. DeepSeek-Math shipped 694 days before Gemini 3.1 Flash, so benchmark comparisons should account for the intervening progress.

DeepSeek-Math is open weight, while Gemini 3.1 Flash is proprietary.

Direct benchmark comparisons are unavailable — DeepSeek-Math and Gemini 3.1 Flash don't publish scores on any of the same benchmarks.