# Claude 3 Sonnet vs Qwen3.5 Plus

> Qwen3.5 Plus is the stronger model overall, scoring 42.3 to 28.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-3-sonnet-vs-qwen3-5-plus
- Last updated: 2026-10-10
- Shared benchmarks: 4

## Summary

- They share 4 benchmarks with published results for both. Claude 3 Sonnet scores higher in 0 categories and Qwen3.5 Plus in 4 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in math, where Qwen3.5 Plus leads 47.9 to 10.0.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 2.5% for Claude 3 Sonnet and 86.7% for Qwen3.5 Plus.

## Snapshot

| | Claude 3 Sonnet | Qwen3.5 Plus |
|---|---|---|
| Provider | Anthropic | Alibaba (Qwen) |
| Noometry Index | 28.8 | 42.3 |
| Rank | 311 | 103 |
| Context | — | 1M |
| Input $/M | — | $0.40 |
| Output $/M | — | $2.40 |
| Weights | Proprietary | Proprietary |

## Coding

- Claude 3 Sonnet: 29.2 (#296)
- Qwen3.5 Plus: —

| Benchmark | Claude 3 Sonnet | Qwen3.5 Plus |
|---|---|---|
| WeirdML | 10.2% | — |
| BigCodeBench Instruct | 42.7% | — |
| LMArena Coding | 1223 | — |
| BigCodeBench Complete | 53.8% | — |
| ALE-Bench | — | 621.92 |
| HumanEval+ | 64% | — |
| MBPP+ | 69.3% | — |

## Agentic & Tool Use

- Claude 3 Sonnet: —
- Qwen3.5 Plus: —

| Benchmark | Claude 3 Sonnet | Qwen3.5 Plus |
|---|---|---|
| Vending-Bench 2 | — | 0.54 |

## Reasoning

- Claude 3 Sonnet: 19.7 (#232)
- Qwen3.5 Plus: 32.0 (#67)

| Benchmark | Claude 3 Sonnet | Qwen3.5 Plus |
|---|---|---|
| DTBench | 53.6% | 80.5% |
| Epoch Capabilities Index | 120.69 | 146.79 |
| Chess Puzzles | — | 22% |
| LMArena Hard Prompts | 1197 | — |
| Mystery Game Puzzles | — | 17% |
| LMCA | — | 36.4% |
| WinoGrande | 75.1% | — |

## Math

- Claude 3 Sonnet: 10.0 (#305)
- Qwen3.5 Plus: 47.9 (#55)

| Benchmark | Claude 3 Sonnet | Qwen3.5 Plus |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 2.5% | 86.7% |
| LMArena Math | 1213 | — |
| MATH Level 5 | 18.2% | — |
| FrontierMath (Feb 2025 set) | — | 21% |
| FrontierMath Tier 4 (v1) | — | 2.1% |

## Knowledge

- Claude 3 Sonnet: 21.1 (#271)
- Qwen3.5 Plus: 46.0 (#78)

| Benchmark | Claude 3 Sonnet | Qwen3.5 Plus |
|---|---|---|
| GPQA Diamond | 40.6% | 84.8% |
| SimpleQA Verified | — | 25.4% |
| Vectara Hallucination Rate | — | 10.7% |
| LMArena Expert | 1173 | — |
| MMLU | 75.9% | — |

## Multimodal

- Claude 3 Sonnet: 24.7 (#120)
- Qwen3.5 Plus: —

| Benchmark | Claude 3 Sonnet | Qwen3.5 Plus |
|---|---|---|
| LMArena Vision | 984 | — |

## Multilingual

- Claude 3 Sonnet: 38.0 (#229)
- Qwen3.5 Plus: —

| Benchmark | Claude 3 Sonnet | Qwen3.5 Plus |
|---|---|---|
| LMArena Non-English | 1205 | — |
| LMArena Chinese | 1188 | — |
| LMArena French | 1228 | — |
| LMArena German | 1204 | — |
| LMArena Japanese | 1131 | — |
| LMArena Korean | 1128 | — |
| LMArena Russian | 1227 | — |
| LMArena Spanish | 1204 | — |

## Instruction Following

- Claude 3 Sonnet: 63.1 (#230)
- Qwen3.5 Plus: —

| Benchmark | Claude 3 Sonnet | Qwen3.5 Plus |
|---|---|---|
| LMArena Instruction Following | 1200 | — |

## Long Context

- Claude 3 Sonnet: 36.7 (#223)
- Qwen3.5 Plus: 42.9 (#109)

| Benchmark | Claude 3 Sonnet | Qwen3.5 Plus |
|---|---|---|
| CL-bench | — | 19.8% |
| CL-bench Life | — | 12.4% |
| LMArena Longer Query | 1211 | — |

## Writing & Preference

- Claude 3 Sonnet: 42.3 (#233)
- Qwen3.5 Plus: —

| Benchmark | Claude 3 Sonnet | Qwen3.5 Plus |
|---|---|---|
| LMArena Text | 1218 | — |
| LMArena Creative Writing | 1186 | — |
| LMArena Multi-Turn | 1227 | — |

## FAQ

### Is Claude 3 Sonnet better than Qwen3.5 Plus?

Qwen3.5 Plus is the stronger model overall, scoring 42.3 to 28.8 on the Noometry Index.

### How many benchmarks do Claude 3 Sonnet and Qwen3.5 Plus share?

4 benchmarks have published results for both models. Claude 3 Sonnet has 30 scored results on Noometry and Qwen3.5 Plus has 15.