# GPT-5.1 vs Qwen3.5-35B-A3B

> Side-by-side benchmark comparison for GPT-5.1 and Qwen3.5-35B-A3B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-5-1-vs-qwen3-5-35b-a3b
- Last updated: September 28, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

Evidence is too thin for a benchmark verdict: GPT-5.1 and Qwen3.5-35B-A3B share only 1 sourced benchmark row.

## Summary

- Only 1 shared sourced benchmark row is available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Qwen3.5-35B-A3B has the lower published output-token price.
- Qwen3.5-35B-A3B has the larger published context window at 262K.

## Model Snapshot

| Property | GPT-5.1 | Qwen3.5-35B-A3B |
|----------|----------|----------|
| Creator | OpenAI | Alibaba |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 200K | 262K |
| Independent public score (not head-to-head) | 58.28 | 47 |
| Benchmarks Covered | 4 | 16 |
| Pricing (input/output) | $1.25 / $10.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- GPT-5.1 public-lane score: Coming soon
- Qwen3.5-35B-A3B public-lane score: 29.4 (Estimated · #81/117)

| Benchmark | GPT-5.1 | Qwen3.5-35B-A3B | Winner |
|-----------|-----------|-----------|--------|
| Gert Labs | 41.24% | 28.96% | GPT-5.1 |
| Terminal-Bench 2.0 | Coming soon | 40.5% | Coming soon |
| BrowseComp | Coming soon | 61% | Coming soon |
| OSWorld-Verified | Coming soon | 54.5% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- GPT-5.1 public-lane score: 38.8 (Supported · #64/142)
- Qwen3.5-35B-A3B public-lane score: 26.7 (Estimated · #100/142)

| Benchmark | GPT-5.1 | Qwen3.5-35B-A3B | Winner |
|-----------|-----------|-----------|--------|
| Vibe Code Bench | 24.61% | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 69.2% | Coming soon |
| SWE-Rebench | Coming soon | 53.7% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- GPT-5.1 public-lane score: 77.3 (Unranked · 2 rankable rows)
- Qwen3.5-35B-A3B public-lane score: 41.4 (Unranked · 3 rankable rows)

| Benchmark | GPT-5.1 | Qwen3.5-35B-A3B | Winner |
|-----------|-----------|-----------|--------|
| LongBench v2 | Coming soon | 59% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- GPT-5.1 public-lane score: 72.3 (Unranked · 1 rankable row)
- Qwen3.5-35B-A3B public-lane score: 68.2 (Unranked · 3 rankable rows)

| Benchmark | GPT-5.1 | Qwen3.5-35B-A3B | Winner |
|-----------|-----------|-----------|--------|
| MMMU | Coming soon | 81.4% | Coming soon |
| MMVU | Coming soon | 72.3% | Coming soon |
| MathVision | Coming soon | 83.9% | Coming soon |
| V* | Coming soon | 92.7% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- GPT-5.1 public-lane score: 52.2 (Estimated · #57/168)
- Qwen3.5-35B-A3B public-lane score: 39.7 (Supported · #100/168)

| Benchmark | GPT-5.1 | Qwen3.5-35B-A3B | Winner |
|-----------|-----------|-----------|--------|
| MMLU-Pro | Coming soon | 85.3% | Coming soon |
| SuperGPQA | Coming soon | 63.4% | Coming soon |
| GPQA | Coming soon | 84.2% | Coming soon |

### Multilingual

- Winner: Insufficient shared evidence
- GPT-5.1 public-lane score: Coming soon
- Qwen3.5-35B-A3B public-lane score: 21.1 (#11/12)

| Benchmark | GPT-5.1 | Qwen3.5-35B-A3B | Winner |
|-----------|-----------|-----------|--------|
| MMLU-ProX | Coming soon | 81% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- GPT-5.1 public-lane score: 87.9 (#27/124)
- Qwen3.5-35B-A3B public-lane score: 87.4 (#30/124)

| Benchmark | GPT-5.1 | Qwen3.5-35B-A3B | Winner |
|-----------|-----------|-----------|--------|
| IFEval | Coming soon | 91.9% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- GPT-5.1 public-lane score: 49 (Unranked · 2 rankable rows)
- Qwen3.5-35B-A3B public-lane score: Coming soon

| Benchmark | GPT-5.1 | Qwen3.5-35B-A3B | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 31.034% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 12.500% | Coming soon | Coming soon |

## FAQ

### Is there enough evidence to pick between GPT-5.1 and Qwen3.5-35B-A3B?

Not yet. The models share only 1 sourced benchmark row, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

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- [Qwen3.5-35B-A3B vs GPT-6 Astra](/compare/gpt-6-astra-vs-qwen3-5-35b-a3b)
- [GPT-5.1 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-gpt-5-1)
- [Qwen3.5-35B-A3B vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-qwen3-5-35b-a3b)

## Explore More

- [GPT-5.1 profile](/models/gpt-5-1)
- [Qwen3.5-35B-A3B profile](/models/qwen3-5-35b-a3b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)