# Gemma 4 31B vs Qwen3.5 397B

> Side-by-side benchmark comparison for Gemma 4 31B and Qwen3.5 397B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemma-4-31b-vs-qwen3-5-397b
- Last updated: October 17, 2026

- Shared sourced benchmarks: 6
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Qwen3.5 397B leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Qwen3.5 397B has the higher overall point estimate 55.34 to 39.89. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in agentic, where the averages are 19.7 for Gemma 4 31B and 43.8 for Qwen3.5 397B.
- The biggest single benchmark swing is Gert Labs in Agentic, with scores of 35.26% and 46.76%.
- Gemma 4 31B is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Gemma 4 31B also has the larger context window at 256K.

## Model Snapshot

| Property | Gemma 4 31B | Qwen3.5 397B |
|----------|----------|----------|
| Creator | Google | Alibaba |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Non-Reasoning |
| Context | 256K | 128K |
| Overall Score | 39.89 | 55.34 |
| Benchmarks Covered | 10 | 62 |
| Pricing (input/output) | $0.00 / $0.00 | $0.60 / $3.60 |

## Category Breakdown

### Agentic

- Winner: Directional only
- Gemma 4 31B public-lane score: 19.7 (Estimated · #109/128)
- Qwen3.5 397B public-lane score: 43.8 (Estimated · #61/128)

| Benchmark | Gemma 4 31B | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| Gert Labs | 35.26% | 46.76% | Qwen3.5 397B |
| Terminal-Bench 2.0 | Coming soon | 52.5% | Coming soon |
| BrowseComp | Coming soon | 69% | Coming soon |
| OSWorld-Verified | Coming soon | 62.2% | Coming soon |
| Claw-Eval | Coming soon | 56.8% | Coming soon |
| QwenClawBench | Coming soon | 51.8% | Coming soon |
| τ³-bench results | Coming soon | 68.4% | Coming soon |
| VITA-Bench | Coming soon | 43.7% | Coming soon |
| DeepPlanning | Coming soon | 37.6% | Coming soon |
| Toolathlon | Coming soon | 36.3% | Coming soon |
| MCP Atlas | Coming soon | 46.1% | Coming soon |
| MCP-Tasks | Coming soon | 74.2% | Coming soon |
| WideResearch | Coming soon | 74.0% | Coming soon |
| ResearchClawBench | Coming soon | 14.2% | Coming soon |

### Coding

- Winner: Not comparable
- Gemma 4 31B public-lane score: 31.7 (Supported · #89/150)
- Qwen3.5 397B public-lane score: Coming soon

| Benchmark | Gemma 4 31B | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench v6 | 80.0% | 83.6% | Qwen3.5 397B |
| SWE-Rebench | 41.6% | Coming soon | Coming soon |
| React Native Evals | 75.2% | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 76.2% | Coming soon |
| SWE-bench Pro | Coming soon | 50.9% | Coming soon |
| SWE Multilingual | Coming soon | 69.3% | Coming soon |
| NL2Repo | Coming soon | 32.2% | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 52.5% | Coming soon |

### Reasoning

- Winner: Not comparable
- Gemma 4 31B public-lane score: 66.6 (Unranked · 3 rankable rows)
- Qwen3.5 397B public-lane score: 74.9 (Unranked · 2 rankable rows)

| Benchmark | Gemma 4 31B | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| MRCRv2 | 66.4% | Coming soon | Coming soon |
| LongBench v2 | Coming soon | 63.2% | Coming soon |
| AI-Needle | Coming soon | 68.7% | Coming soon |

### Multimodal & Grounded

- Winner: Directional only
- Gemma 4 31B public-lane score: 74.3 (#26/54)
- Qwen3.5 397B public-lane score: 73.6 (#29/54)

| Benchmark | Gemma 4 31B | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 76.9% | 79% | Qwen3.5 397B |
| MMMU | Coming soon | 85.0% | Coming soon |
| RealWorldQA | Coming soon | 83.9% | Coming soon |
| OmniDocBench 1.5 | Coming soon | 90.8% | Coming soon |
| Video-MME (with subtitle) | Coming soon | 87.5% | Coming soon |
| Video-MME (w/o subtitle) | Coming soon | 83.7% | Coming soon |
| MathVision | Coming soon | 88.6% | Coming soon |
| We-Math | Coming soon | 87.9% | Coming soon |
| DynaMath | Coming soon | 86.3% | Coming soon |
| SimpleVQA | Coming soon | 67.1% | Coming soon |
| CharXiv | Coming soon | 80.8% | Coming soon |
| MMLongBench-Doc | Coming soon | 61.5% | Coming soon |
| CC-OCR | Coming soon | 82.0% | Coming soon |
| AI2D_TEST | Coming soon | 93.9% | Coming soon |
| CountBench | Coming soon | 97.2% | Coming soon |
| RefCOCO (avg) | Coming soon | 92.3% | Coming soon |
| ODINW13 | Coming soon | 47.0% | Coming soon |
| ERQA | Coming soon | 67.5% | Coming soon |
| VideoMMMU | Coming soon | 84.7% | Coming soon |
| MLVU (M-Avg) | Coming soon | 86.7% | Coming soon |
| ScreenSpot Pro | Coming soon | 65.6% | Coming soon |
| V* | Coming soon | 95.8% | Coming soon |

### Knowledge

- Winner: Directional only
- Gemma 4 31B public-lane score: 40.9 (Supported · #114/184)
- Qwen3.5 397B public-lane score: 53.1 (Estimated · #68/184)

| Benchmark | Gemma 4 31B | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 84.3% | 88.4% | Qwen3.5 397B |
| MMLU-Pro | 85.2% | 87.8% | Qwen3.5 397B |
| HLE | 26.5% | 28.7% | Qwen3.5 397B |
| HLE w/o tools | 19.5% | Coming soon | Coming soon |
| SuperGPQA | Coming soon | 70.4% | Coming soon |
| MMLU-Redux | Coming soon | 94.9% | Coming soon |
| C-Eval | Coming soon | 93% | Coming soon |

### Multilingual

- Winner: Not comparable
- Gemma 4 31B public-lane score: Coming soon
- Qwen3.5 397B public-lane score: 93.8 (#5/17)

| Benchmark | Gemma 4 31B | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| MMLU-ProX | Coming soon | 84.7% | Coming soon |
| NOVA-63 | Coming soon | 59.1% | Coming soon |
| INCLUDE | Coming soon | 85.6% | Coming soon |
| PolyMath | Coming soon | 73.3% | Coming soon |
| MAXIFE | Coming soon | 88.2% | Coming soon |

### Instruction Following

- Winner: Directional only
- Gemma 4 31B public-lane score: 92.9 (#15/148)
- Qwen3.5 397B public-lane score: 79.9 (#59/148)

| Benchmark | Gemma 4 31B | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| IFEval | Coming soon | 92.6% | Coming soon |
| IFBench | Coming soon | 76.5% | Coming soon |

### Mathematics

- Winner: Not comparable
- Gemma 4 31B public-lane score: Coming soon
- Qwen3.5 397B public-lane score: 81.7 (Unranked · 5 rankable rows)

| Benchmark | Gemma 4 31B | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | Coming soon | 93.3% | Coming soon |
| HMMT Feb 2025 | Coming soon | 94.8% | Coming soon |
| HMMT Nov 2025 | Coming soon | 92.7% | Coming soon |
| HMMT Feb 2026 | Coming soon | 87.9% | Coming soon |
| MMAnswerBench | Coming soon | 80.9% | Coming soon |

## FAQ

### Which is better overall, Gemma 4 31B or Qwen3.5 397B?

Qwen3.5 397B has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between Gemma 4 31B and Qwen3.5 397B?

The widest category gap is in agentic, where the averages are 19.7 for Gemma 4 31B and 43.8 for Qwen3.5 397B.

### How many benchmarks does Gemma 4 31B cover on BenchLM?

Gemma 4 31B currently has 10 sourced benchmark scores on BenchLM.

### How many benchmarks does Qwen3.5 397B cover on BenchLM?

Qwen3.5 397B currently has 62 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Gemma 4 31B vs Gemma 4 26B A4B](/compare/gemma-4-26b-a4b-vs-gemma-4-31b)
- [Qwen3.5 397B vs Gemma 4 26B A4B](/compare/gemma-4-26b-a4b-vs-qwen3-5-397b)
- [Gemma 4 31B vs Gemma 4 12B](/compare/gemma-4-12b-vs-gemma-4-31b)
- [Qwen3.5 397B vs Gemma 4 12B](/compare/gemma-4-12b-vs-qwen3-5-397b)

## Explore More

- [Gemma 4 31B profile](/models/gemma-4-31b)
- [Qwen3.5 397B profile](/models/qwen3-5-397b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)