Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
Qwen3.5 397B (Reasoning) is clearly ahead on the aggregate, 75 to 53. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Qwen3.5 397B (Reasoning)'s sharpest advantage is in coding, where it averages 62.3 against 24.7. The single biggest benchmark swing on the page is LiveCodeBench, 60 to 21. Seed-2.0-Mini does hit back in multimodal & grounded, so the answer changes if that is the part of the workload you care about most.
Qwen3.5 397B (Reasoning) is the reasoning model in the pair, while Seed-2.0-Mini is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. Seed-2.0-Mini gives you the larger context window at 256K, compared with 128K for Qwen3.5 397B (Reasoning).
Pick Qwen3.5 397B (Reasoning) if you want the stronger benchmark profile. Seed-2.0-Mini only becomes the better choice if multimodal & grounded is the priority or you need the larger 256K context window.
Qwen3.5 397B (Reasoning)
74.8
Seed-2.0-Mini
46.2
Qwen3.5 397B (Reasoning)
62.3
Seed-2.0-Mini
24.7
Qwen3.5 397B (Reasoning)
70.8
Seed-2.0-Mini
73.1
Qwen3.5 397B (Reasoning)
84.2
Seed-2.0-Mini
64.8
Qwen3.5 397B (Reasoning)
70.1
Seed-2.0-Mini
44.6
Qwen3.5 397B (Reasoning)
89
Seed-2.0-Mini
80
Qwen3.5 397B (Reasoning)
87.8
Seed-2.0-Mini
71.8
Qwen3.5 397B (Reasoning)
92.5
Seed-2.0-Mini
65.1
Qwen3.5 397B (Reasoning) is ahead overall, 75 to 53. The biggest single separator in this matchup is LiveCodeBench, where the scores are 60 and 21.
Qwen3.5 397B (Reasoning) has the edge for knowledge tasks in this comparison, averaging 70.1 versus 44.6. Inside this category, MMLU is the benchmark that creates the most daylight between them.
Qwen3.5 397B (Reasoning) has the edge for coding in this comparison, averaging 62.3 versus 24.7. Inside this category, LiveCodeBench is the benchmark that creates the most daylight between them.
Qwen3.5 397B (Reasoning) has the edge for math in this comparison, averaging 92.5 versus 65.1. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.
Qwen3.5 397B (Reasoning) has the edge for reasoning in this comparison, averaging 84.2 versus 64.8. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.
Qwen3.5 397B (Reasoning) has the edge for agentic tasks in this comparison, averaging 74.8 versus 46.2. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
Seed-2.0-Mini has the edge for multimodal and grounded tasks in this comparison, averaging 73.1 versus 70.8. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.
Qwen3.5 397B (Reasoning) has the edge for instruction following in this comparison, averaging 89 versus 80. Inside this category, IFEval is the benchmark that creates the most daylight between them.
Qwen3.5 397B (Reasoning) has the edge for multilingual tasks in this comparison, averaging 87.8 versus 71.8. Inside this category, MGSM is the benchmark that creates the most daylight between them.
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