Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
DeepSeekMath V2 is clearly ahead on the aggregate, 66 to 56. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
DeepSeekMath V2's sharpest advantage is in coding, where it averages 47.3 against 27.6. The single biggest benchmark swing on the page is SWE-bench Verified, 45 to 24. Seed 1.6 Flash does hit back in multimodal & grounded, so the answer changes if that is the part of the workload you care about most.
Seed 1.6 Flash gives you the larger context window at 256K, compared with 128K for DeepSeekMath V2.
Pick DeepSeekMath V2 if you want the stronger benchmark profile. Seed 1.6 Flash only becomes the better choice if multimodal & grounded is the priority or you need the larger 256K context window.
DeepSeekMath V2
63.9
Seed 1.6 Flash
54.5
DeepSeekMath V2
47.3
Seed 1.6 Flash
27.6
DeepSeekMath V2
68.1
Seed 1.6 Flash
73.1
DeepSeekMath V2
75.9
Seed 1.6 Flash
66.8
DeepSeekMath V2
61
Seed 1.6 Flash
47.3
DeepSeekMath V2
83
Seed 1.6 Flash
81
DeepSeekMath V2
82.5
Seed 1.6 Flash
72.8
DeepSeekMath V2
84
Seed 1.6 Flash
67.1
DeepSeekMath V2 is ahead overall, 66 to 56. The biggest single separator in this matchup is SWE-bench Verified, where the scores are 45 and 24.
DeepSeekMath V2 has the edge for knowledge tasks in this comparison, averaging 61 versus 47.3. Inside this category, FrontierScience is the benchmark that creates the most daylight between them.
DeepSeekMath V2 has the edge for coding in this comparison, averaging 47.3 versus 27.6. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.
DeepSeekMath V2 has the edge for math in this comparison, averaging 84 versus 67.1. Inside this category, MATH-500 is the benchmark that creates the most daylight between them.
DeepSeekMath V2 has the edge for reasoning in this comparison, averaging 75.9 versus 66.8. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.
DeepSeekMath V2 has the edge for agentic tasks in this comparison, averaging 63.9 versus 54.5. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
Seed 1.6 Flash has the edge for multimodal and grounded tasks in this comparison, averaging 73.1 versus 68.1. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.
DeepSeekMath V2 has the edge for instruction following in this comparison, averaging 83 versus 81. Inside this category, IFEval is the benchmark that creates the most daylight between them.
DeepSeekMath V2 has the edge for multilingual tasks in this comparison, averaging 82.5 versus 72.8. Inside this category, MGSM is the benchmark that creates the most daylight between them.
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