# Claude 3 Opus vs Qwen3.5 27B

> Qwen3.5 27B is the stronger model overall, scoring 41.9 to 29.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-3-opus-vs-qwen3-5-27b
- Last updated: 2026-10-10
- Shared benchmarks: 21

## Summary

- They share 21 benchmarks with published results for both. Claude 3 Opus scores higher in 0 categories and Qwen3.5 27B in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where Qwen3.5 27B leads 38.8 to 14.8.
- The biggest single-benchmark swing is DTBench: 61.6% for Claude 3 Opus and 82.4% for Qwen3.5 27B.
- Qwen3.5 27B has downloadable open weights; the other is API-only.

## Snapshot

| | Claude 3 Opus | Qwen3.5 27B |
|---|---|---|
| Provider | Anthropic | Alibaba (Qwen) |
| Noometry Index | 29.5 | 41.9 |
| Rank | 310 | 127 |
| Context | — | 262K |
| Input $/M | — | $0.30 |
| Output $/M | — | $2.40 |
| Weights | Proprietary | Open |

## Coding

- Claude 3 Opus: 32.9 (#267)
- Qwen3.5 27B: 38.9 (#168)

| Benchmark | Claude 3 Opus | Qwen3.5 27B |
|---|---|---|
| WeirdML | 19.2% | 39.5% |
| LMArena Coding | 1264 | 1427 |
| LMArena WebDev | — | 1358 |
| BigCodeBench Instruct | 45.5% | — |
| LiveBench Coding | 38.6% | — |
| BigCodeBench Complete | 57.4% | — |
| ALE-Bench | — | 349.45 |
| HumanEval+ | 77.4% | — |
| MBPP+ | 73.3% | — |

## Agentic & Tool Use

- Claude 3 Opus: 24.6 (#116)
- Qwen3.5 27B: —

| Benchmark | Claude 3 Opus | Qwen3.5 27B |
|---|---|---|
| Cybench | 10% | — |
| METR Time Horizons | 29.5% | — |
| Vending-Bench 2 | — | 201.98 |

## Reasoning

- Claude 3 Opus: 14.6 (#324)
- Qwen3.5 27B: 27.5 (#117)

| Benchmark | Claude 3 Opus | Qwen3.5 27B |
|---|---|---|
| LMArena Hard Prompts | 1245 | 1414 |
| DTBench | 61.6% | 82.4% |
| LMCA | 17% | 34% |
| SimpleBench | 23.5% | — |
| NYT Connections (extended) | — | 47.9% |
| Chess Puzzles | 5% | — |
| EnigmaEval | 0.8% | — |
| Thematic Generalization | — | 45.5% |
| LiveBench Reasoning | 40.6% | — |
| LiveBench Data Analysis | 57.9% | — |
| Epoch Capabilities Index | 126.91 | — |
| ForecastBench | 58.4 | — |
| LiveBench | 49.2% | — |
| WinoGrande | 88.5% | — |

## Math

- Claude 3 Opus: 14.8 (#299)
- Qwen3.5 27B: 38.8 (#127)

| Benchmark | Claude 3 Opus | Qwen3.5 27B |
|---|---|---|
| LMArena Math | 1273 | 1429 |
| MathArena Final-Answer Competitions | — | 56.7% |
| OTIS Mock AIME 2024-2025 | 4.7% | — |
| LiveBench Math | 43.6% | — |
| MATH Level 5 | 37.5% | — |

## Knowledge

- Claude 3 Opus: 24.5 (#267)
- Qwen3.5 27B: 38.0 (#150)

| Benchmark | Claude 3 Opus | Qwen3.5 27B |
|---|---|---|
| LMArena Expert | 1223 | 1428 |
| GPQA Diamond | 47.2% | — |
| SimpleQA Verified | 12.6% | — |
| Confabulations | 22.7% | — |
| Vectara Hallucination Rate | — | 12.1% |
| MMLU | 84.6% | — |

## Multimodal

- Claude 3 Opus: 27.1 (#116)
- Qwen3.5 27B: 39.4 (#59)

| Benchmark | Claude 3 Opus | Qwen3.5 27B |
|---|---|---|
| LMArena Vision | 1023 | 1241 |

## Multilingual

- Claude 3 Opus: 41.4 (#207)
- Qwen3.5 27B: 50.8 (#115)

| Benchmark | Claude 3 Opus | Qwen3.5 27B |
|---|---|---|
| LMArena Non-English | 1258 | 1390 |
| LMArena Chinese | 1248 | 1478 |
| LMArena French | 1275 | 1410 |
| LMArena German | 1258 | 1393 |
| LMArena Japanese | 1204 | 1345 |
| LMArena Korean | 1187 | 1358 |
| LMArena Russian | 1280 | 1390 |
| LMArena Spanish | 1246 | 1407 |

## Instruction Following

- Claude 3 Opus: 64.1 (#228)
- Qwen3.5 27B: 73.5 (#119)

| Benchmark | Claude 3 Opus | Qwen3.5 27B |
|---|---|---|
| LMArena Instruction Following | 1248 | 1393 |
| LiveBench Instruction Following | 63.9% | — |

## Long Context

- Claude 3 Opus: 38.2 (#202)
- Qwen3.5 27B: 43.1 (#106)

| Benchmark | Claude 3 Opus | Qwen3.5 27B |
|---|---|---|
| LMArena Longer Query | 1259 | 1413 |

## Writing & Preference

- Claude 3 Opus: 47.2 (#213)
- Qwen3.5 27B: 59.3 (#111)

| Benchmark | Claude 3 Opus | Qwen3.5 27B |
|---|---|---|
| LMArena Text | 1262 | 1409 |
| LMArena Creative Writing | 1235 | 1362 |
| LMArena Multi-Turn | 1275 | 1410 |
| LiveBench Language | 50.4% | — |

## FAQ

### Is Claude 3 Opus better than Qwen3.5 27B?

Qwen3.5 27B is the stronger model overall, scoring 41.9 to 29.5 on the Noometry Index.

### Is Claude 3 Opus or Qwen3.5 27B better for coding?

Qwen3.5 27B scores higher on coding benchmarks: 38.9 versus 32.9 in the Noometry coding category.

### How many benchmarks do Claude 3 Opus and Qwen3.5 27B share?

21 benchmarks have published results for both models. Claude 3 Opus has 46 scored results on Noometry and Qwen3.5 27B has 28.