Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
Gemma 4 31B
73
2/8 categoriesQwen3.5 397B (Reasoning)
77
Winner · 2/8 categoriesGemma 4 31B· Qwen3.5 397B (Reasoning)
Pick Qwen3.5 397B (Reasoning) if you want the stronger benchmark profile. Gemma 4 31B only becomes the better choice if coding is the priority or you need the larger 256K context window.
Qwen3.5 397B (Reasoning) is clearly ahead on the aggregate, 77 to 73. 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 reasoning, where it averages 82 against 66.4. The single biggest benchmark swing on the page is LiveCodeBench, 80% to 60%. Gemma 4 31B does hit back in coding, so the answer changes if that is the part of the workload you care about most.
Gemma 4 31B gives you the larger context window at 256K, compared with 128K for Qwen3.5 397B (Reasoning).
BenchLM keeps the benchmark table and the operator tradeoffs on the same page so a better score does not hide a materially slower, pricier, or smaller-context model.
Runtime metrics show N/A when BenchLM does not have a sourced snapshot for that exact model. The scoring rules and freshness policy are documented on the methodology page.
| Benchmark | Gemma 4 31B | Qwen3.5 397B (Reasoning) |
|---|---|---|
| Agentic | ||
| OSWorld-Verified | — | 70% |
| CodingGemma 4 31B wins | ||
| LiveCodeBench | 80% | 60% |
| HumanEval | — | 83% |
| SWE-bench Verified | — | 60% |
| SWE-bench Pro | — | 65% |
| SWE-Rebench | — | 59.9% |
| Multimodal & GroundedGemma 4 31B wins | ||
| MMMU-Pro | 76.9% | 64% |
| OfficeQA Pro | — | 79% |
| ReasoningQwen3.5 397B (Reasoning) wins | ||
| BBH | 74.4% | 91% |
| MRCRv2 | 66.4% | 82% |
| MuSR | — | 85% |
| LongBench v2 | — | 80% |
| KnowledgeQwen3.5 397B (Reasoning) wins | ||
| GPQA | 84.3% | 89% |
| MMLU-Pro | 85.2% | 81% |
| HLE | 26.5% | 29% |
| HLE w/o tools | 19.5% | — |
| MMLU | — | 91% |
| SuperGPQA | — | 87% |
| FrontierScience | — | 81% |
| SimpleQA | — | 87% |
| Instruction Following | ||
| IFEval | — | 89% |
| Multilingual | ||
| MGSM | — | 91% |
| MMLU-ProX | — | 86% |
| Mathematics | ||
| AIME 2023 | — | 93% |
| AIME 2024 | — | 95% |
| AIME 2025 | — | 94% |
| HMMT Feb 2023 | — | 89% |
| HMMT Feb 2024 | — | 91% |
| HMMT Feb 2025 | — | 90% |
| BRUMO 2025 | — | 92% |
| MATH-500 | — | 93% |
Qwen3.5 397B (Reasoning) is ahead overall, 77 to 73. The biggest single separator in this matchup is LiveCodeBench, where the scores are 80% and 60%.
Qwen3.5 397B (Reasoning) has the edge for knowledge tasks in this comparison, averaging 71.5 versus 61.3. Inside this category, GPQA is the benchmark that creates the most daylight between them.
Gemma 4 31B has the edge for coding in this comparison, averaging 80 versus 61.2. Inside this category, LiveCodeBench is the benchmark that creates the most daylight between them.
Qwen3.5 397B (Reasoning) has the edge for reasoning in this comparison, averaging 82 versus 66.4. Inside this category, BBH is the benchmark that creates the most daylight between them.
Gemma 4 31B has the edge for multimodal and grounded tasks in this comparison, averaging 76.9 versus 70.8. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.
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