Claude Instant 1.2 and DeepSeek-Math don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Claude Instant 1.2 shipped 238 days before DeepSeek-Math, so benchmark comparisons should account for the intervening progress.

Claude Instant 1.2 is proprietary, while DeepSeek-Math is open weight.

Direct benchmark comparisons are unavailable — Claude Instant 1.2 and DeepSeek-Math don't publish scores on any of the same benchmarks.