# Gemini 3.1 Pro vs Qwen3.5 Flash

> Side-by-side benchmark comparison for Gemini 3.1 Pro and Qwen3.5 Flash across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-3-1-pro-vs-qwen3-5-flash
- Last updated: September 27, 2026

- Shared sourced benchmarks: 6
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

Pick Gemini 3.1 Pro if you want the stronger benchmark profile. Qwen3.5 Flash only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Gemini 3.1 Pro leads overall 64.45 to 45.49.
- The clearest category separation is in mathematics, where the averages are 54.2 for Gemini 3.1 Pro and 28.4 for Qwen3.5 Flash.
- The biggest single benchmark swing is FrontierMath v2 (Tiers 1-3) in Mathematics, with scores of 36.900% and 6.207%.
- Qwen3.5 Flash is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Gemini 3.1 Pro | Qwen3.5 Flash |
|----------|----------|----------|
| Creator | Google | Alibaba |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1M |
| Overall Score | 64.45 | 45.49 |
| Benchmarks Covered | 28 | 6 |
| Pricing (input/output) | $2.00 / $12.00 | $0.10 / $0.40 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- Gemini 3.1 Pro public-lane score: 39.3 (Supported · #47/105)
- Qwen3.5 Flash public-lane score: Coming soon

| Benchmark | Gemini 3.1 Pro | Qwen3.5 Flash | Winner |
|-----------|-----------|-----------|--------|
| Claw-Eval | 57.8% | Coming soon | Coming soon |
| DeepSearchQA | 69.7% | Coming soon | Coming soon |
| τ²-bench results | 95.6% | Coming soon | Coming soon |
| Gert Labs | 56.87% | Coming soon | Coming soon |
| ResearchClawBench | 13.3% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 70.8% | Coming soon | Coming soon |

### Coding

- Winner: Directional only
- Gemini 3.1 Pro public-lane score: 43.3 (Supported · #52/135)
- Qwen3.5 Flash public-lane score: 26.5 (Estimated · #97/135)

| Benchmark | Gemini 3.1 Pro | Qwen3.5 Flash | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench Pro | 82.9% | Coming soon | Coming soon |
| React Native Evals | 78.9% | Coming soon | Coming soon |
| Vibe Code Bench | 32.03% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 88.5% | 83.3% | Gemini 3.1 Pro |
| SWE-bench (Vals) | 78.8% | 64.4% | Gemini 3.1 Pro |

### Reasoning

- Winner: Not comparable
- Gemini 3.1 Pro public-lane score: 54.4 (Unranked · 2 rankable rows)
- Qwen3.5 Flash public-lane score: Coming soon

| Benchmark | Gemini 3.1 Pro | Qwen3.5 Flash | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 77.1% | Coming soon | Coming soon |
| ARC-AGI-3 | 0.4% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Gemini 3.1 Pro public-lane score: 79.1 (#13/50)
- Qwen3.5 Flash public-lane score: Coming soon

| Benchmark | Gemini 3.1 Pro | Qwen3.5 Flash | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 83.9% | Coming soon | Coming soon |
| CharXiv | 80.2% | Coming soon | Coming soon |
| ERQA | 69.4% | Coming soon | Coming soon |
| SimpleVQA | 72.4% | Coming soon | Coming soon |
| ScreenSpot Pro | 84.4% | Coming soon | Coming soon |
| ZeroBench | 29.0% | Coming soon | Coming soon |
| MedXpertQA (MM) | 81.3% | Coming soon | Coming soon |

### Knowledge

- Winner: Directional only
- Gemini 3.1 Pro public-lane score: 66.7 (Supported · #18/158)
- Qwen3.5 Flash public-lane score: 43 (Estimated · #80/158)

| Benchmark | Gemini 3.1 Pro | Qwen3.5 Flash | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | 94.3% | Coming soon | Coming soon |
| HLE w/o tools | 45.4% | Coming soon | Coming soon |
| HealthBench Hard | 20.6% | Coming soon | Coming soon |
| MedXpertQA (Text) | 71.5% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 95.5% | 82.8% | Gemini 3.1 Pro |
| MMLU-Pro (Vals) | 91.0% | 84.1% | Gemini 3.1 Pro |

### Mathematics

- Winner: Not comparable
- Gemini 3.1 Pro public-lane score: 54.2 (Unranked · 2 rankable rows)
- Qwen3.5 Flash public-lane score: 28.4 (Unranked · 2 rankable rows)

| Benchmark | Gemini 3.1 Pro | Qwen3.5 Flash | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 36.900% | 6.207% | Gemini 3.1 Pro |
| FrontierMath v2 (Tier 4) | 16.700% | 0.000% | Gemini 3.1 Pro |

## FAQ

### Which is better overall, Gemini 3.1 Pro or Qwen3.5 Flash?

Gemini 3.1 Pro is ahead overall on BenchLM right now.

### Where is the biggest gap between Gemini 3.1 Pro and Qwen3.5 Flash?

The widest category gap is in mathematics, where the averages are 54.2 for Gemini 3.1 Pro and 28.4 for Qwen3.5 Flash.

### How many benchmarks does Gemini 3.1 Pro cover on BenchLM?

Gemini 3.1 Pro currently has 28 sourced benchmark scores on BenchLM.

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

Qwen3.5 Flash currently has 6 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Gemini 3.1 Pro vs GPT-6 Astra](/compare/gemini-3-1-pro-vs-gpt-6-astra)
- [Qwen3.5 Flash vs GPT-6 Astra](/compare/gpt-6-astra-vs-qwen3-5-flash)
- [Gemini 3.1 Pro vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-gemini-3-1-pro)
- [Qwen3.5 Flash vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-qwen3-5-flash)

## Explore More

- [Gemini 3.1 Pro profile](/models/gemini-3-1-pro)
- [Qwen3.5 Flash profile](/models/qwen3-5-flash)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)