# Gemini 3.5 Flash vs Qwen3.8-27B

> Side-by-side benchmark comparison for Gemini 3.5 Flash and Qwen3.8-27B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-3-5-flash-vs-qwen3-8-27b
- Last updated: September 28, 2026

- Shared sourced benchmarks: 12
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

Pick Gemini 3.5 Flash if you want the stronger benchmark profile. Qwen3.8-27B only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Gemini 3.5 Flash leads overall 63.41 to 55.26.
- The clearest category separation is in reasoning, where the averages are 62.8 for Gemini 3.5 Flash and 78.7 for Qwen3.8-27B.
- The biggest single benchmark swing is Terminal-Bench 2.1 (Vals) in Agentic, with scores of 74.2% and 58.4%.
- Qwen3.8-27B is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Gemini 3.5 Flash also has the larger context window at 1M.

## Model Snapshot

| Property | Gemini 3.5 Flash | Qwen3.8-27B |
|----------|----------|----------|
| Creator | Google | Alibaba |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 262K |
| Overall Score | 63.41 | 55.26 |
| Benchmarks Covered | 27 | 33 |
| Pricing (input/output) | $1.50 / $9.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Qwen3.8-27B
- Gemini 3.5 Flash public-lane score: 50.5 (Supported · #38/117)
- Qwen3.8-27B public-lane score: 61.2 (Supported · #18/117)

| Benchmark | Gemini 3.5 Flash | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 76.2% | 73.0% | Gemini 3.5 Flash |
| MCP Atlas | 83.6% | Coming soon | Coming soon |
| Toolathlon | 56.5% | Coming soon | Coming soon |
| OSWorld-Verified | 78.4% | 84.3% | Qwen3.8-27B |
| Finance Agent v2 | 57.9% | Coming soon | Coming soon |
| Gert Labs | 61.85% | Coming soon | Coming soon |
| ResearchClawBench | 18.0% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 74.2% | 58.4% | Gemini 3.5 Flash |
| CoWorkBench | Coming soon | 70.7% | Coming soon |
| JobBench | Coming soon | 33.4% | Coming soon |
| Agents' Last Exam | Coming soon | 42.9% | Coming soon |
| WebArena-Verified | Coming soon | 64.8% | Coming soon |
| AndroidWorld | Coming soon | 81.9% | Coming soon |

### Coding

- Winner: Gemini 3.5 Flash
- Gemini 3.5 Flash public-lane score: 52.3 (Supported · #36/142)
- Qwen3.8-27B public-lane score: 48.7 (Supported · #45/142)

| Benchmark | Gemini 3.5 Flash | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 76.2% | 73.0% | Gemini 3.5 Flash |
| SWE-bench Pro | 55.1% | 61.7% | Qwen3.8-27B |
| Vibe Code Bench | 48.68% | Coming soon | Coming soon |
| cursorBench31 | 49.8% | Coming soon | Coming soon |
| cursorBench32 | 48.8% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 87.6% | 84.0% | Gemini 3.5 Flash |
| SWE-bench (Vals) | 78.8% | 86.0% | Qwen3.8-27B |
| NL2Repo | Coming soon | 42.3% | Coming soon |
| DeepSWE | Coming soon | 42.2% | Coming soon |
| LiveCodeBench v6 | Coming soon | 90.3% | Coming soon |
| VulcanBench v3 | Coming soon | 82.6% | Coming soon |

### Reasoning

- Winner: Directional only
- Gemini 3.5 Flash public-lane score: 62.8 (#19/27)
- Qwen3.8-27B public-lane score: 78.7 (#8/27)

| Benchmark | Gemini 3.5 Flash | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| MRCRv2 | 77.3% | Coming soon | Coming soon |
| MRCR 1M | 26.6% | Coming soon | Coming soon |
| ARC-AGI-2 | 72.1% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Directional only
- Gemini 3.5 Flash public-lane score: 87.8 (#6/50)
- Qwen3.8-27B public-lane score: 80.9 (#11/50)

| Benchmark | Gemini 3.5 Flash | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| CharXiv | 84.2% | 90.2% | Qwen3.8-27B |
| MMMU-Pro | 83.6% | Coming soon | Coming soon |
| Blueprint-Bench 2 | 33.6% | Coming soon | Coming soon |
| MathVision | Coming soon | 90.0% | Coming soon |
| MathVision w/ Python | Coming soon | 94.6% | Coming soon |
| BabyVision | Coming soon | 65.7% | Coming soon |
| BabyVision w/ Python | Coming soon | 85.6% | Coming soon |
| Vision2Web | Coming soon | 62.9% | Coming soon |
| CharXiv w/o tools | Coming soon | 83.7% | Coming soon |
| OmniDocBench 1.5 | Coming soon | 91.1% | Coming soon |
| RealWorldQA | Coming soon | 85.9% | Coming soon |
| ERQA | Coming soon | 65.5% | Coming soon |

### Knowledge

- Winner: Gemini 3.5 Flash
- Gemini 3.5 Flash public-lane score: 64.4 (Supported · #27/168)
- Qwen3.8-27B public-lane score: 49.2 (Supported · #63/168)

| Benchmark | Gemini 3.5 Flash | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | 92.7% | 89.2% | Gemini 3.5 Flash |
| HLE | 40.2% | 30.8% | Gemini 3.5 Flash |
| GPQA Diamond (Vals) | 92.7% | 88.9% | Gemini 3.5 Flash |
| MMLU-Pro (Vals) | 89.5% | 84.3% | Gemini 3.5 Flash |
| GPQA | Coming soon | 89.2% | Coming soon |
| HLE w/o tools | Coming soon | 30.8% | Coming soon |

### Instruction Following

- Winner: Directional only
- Gemini 3.5 Flash public-lane score: 84.1 (#43/124)
- Qwen3.8-27B public-lane score: 83.2 (#45/124)

| Benchmark | Gemini 3.5 Flash | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 79.5% | Coming soon |

### Mathematics

- Winner: Not comparable
- Gemini 3.5 Flash public-lane score: 55.1 (Unranked · 2 rankable rows)
- Qwen3.8-27B public-lane score: Coming soon

| Benchmark | Gemini 3.5 Flash | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 38.966% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 14.583% | Coming soon | Coming soon |

## FAQ

### Which is better overall, Gemini 3.5 Flash or Qwen3.8-27B?

Gemini 3.5 Flash is ahead overall on BenchLM right now.

### Where is the biggest gap between Gemini 3.5 Flash and Qwen3.8-27B?

The widest category gap is in reasoning, where the averages are 62.8 for Gemini 3.5 Flash and 78.7 for Qwen3.8-27B.

### How many benchmarks does Gemini 3.5 Flash cover on BenchLM?

Gemini 3.5 Flash currently has 27 sourced benchmark scores on BenchLM.

### How many benchmarks does Qwen3.8-27B cover on BenchLM?

Qwen3.8-27B currently has 33 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Gemini 3.5 Flash vs Gemini 3.5 Flash Cyber](/compare/gemini-3-5-flash-vs-gemini-3-5-flash-cyber)
- [Qwen3.8-27B vs Gemini 3.5 Flash Cyber](/compare/gemini-3-5-flash-cyber-vs-qwen3-8-27b)
- [Gemini 3.5 Flash vs GPT-6 Astra](/compare/gemini-3-5-flash-vs-gpt-6-astra)
- [Qwen3.8-27B vs GPT-6 Astra](/compare/gpt-6-astra-vs-qwen3-8-27b)

## Explore More

- [Gemini 3.5 Flash profile](/models/gemini-3-5-flash)
- [Qwen3.8-27B profile](/models/qwen3-8-27b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)