# Claude 3 Opus vs Qwen3.5-Flash

> Qwen3.5-Flash is the stronger model overall, scoring 42.5 to 29.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-3-opus-vs-qwen3-5-flash
- Last updated: 2026-10-12
- Shared benchmarks: 24

## Summary

- They share 24 benchmarks with published results for both. Claude 3 Opus scores higher in 0 categories and Qwen3.5-Flash in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Qwen3.5-Flash leads 37.4 to 14.8.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 4.7% for Claude 3 Opus and 84.4% for Qwen3.5-Flash.

## Snapshot

| | Claude 3 Opus | Qwen3.5-Flash |
|---|---|---|
| Provider | Anthropic | Alibaba (Qwen) |
| Noometry Index | 29.5 | 42.5 |
| Rank | 310 | 112 |
| Context | — | 1M |
| Input $/M | — | $0.10 |
| Output $/M | — | $0.40 |
| Weights | Proprietary | Proprietary |

## Coding

- Claude 3 Opus: 32.9 (#267)
- Qwen3.5-Flash: 34.2 (#242)

| Benchmark | Claude 3 Opus | Qwen3.5-Flash |
|---|---|---|
| LMArena Coding | 1264 | 1412 |
| LMArena WebDev | — | 1244 |
| WeirdML | 19.2% | — |
| BigCodeBench Instruct | 45.5% | — |
| LiveBench Coding | 38.6% | — |
| BigCodeBench Complete | 57.4% | — |
| ALE-Bench | — | 221.8 |
| HumanEval+ | 77.4% | — |
| MBPP+ | 73.3% | — |

## Agentic & Tool Use

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

| Benchmark | Claude 3 Opus | Qwen3.5-Flash |
|---|---|---|
| Cybench | 10% | — |
| METR Time Horizons | 29.5% | — |
| Vending-Bench 2 | — | 462.69 |

## Reasoning

- Claude 3 Opus: 14.6 (#324)
- Qwen3.5-Flash: 33.7 (#72)

| Benchmark | Claude 3 Opus | Qwen3.5-Flash |
|---|---|---|
| Chess Puzzles | 5% | 21% |
| LMArena Hard Prompts | 1245 | 1403 |
| DTBench | 61.6% | 82.9% |
| LMCA | 17% | 29.1% |
| Epoch Capabilities Index | 126.91 | 143.98 |
| SimpleBench | 23.5% | — |
| EnigmaEval | 0.8% | — |
| LiveBench Reasoning | 40.6% | — |
| Mystery Game Puzzles | — | 20% |
| LiveBench Data Analysis | 57.9% | — |
| ForecastBench | 58.4 | — |
| LiveBench | 49.2% | — |
| WinoGrande | 88.5% | — |

## Math

- Claude 3 Opus: 14.8 (#299)
- Qwen3.5-Flash: 37.4 (#158)

| Benchmark | Claude 3 Opus | Qwen3.5-Flash |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 4.7% | 84.4% |
| LMArena Math | 1273 | 1407 |
| FrontierMath (Tiers 1-3) | — | 18.2% |
| LiveBench Math | 43.6% | — |
| MATH Level 5 | 37.5% | — |
| FrontierMath (Feb 2025 set) | — | 6.2% |
| FrontierMath Tier 4 (v1) | — | 0% |

## Knowledge

- Claude 3 Opus: 24.5 (#267)
- Qwen3.5-Flash: 43.2 (#93)

| Benchmark | Claude 3 Opus | Qwen3.5-Flash |
|---|---|---|
| GPQA Diamond | 47.2% | 82.3% |
| SimpleQA Verified | 12.6% | 20.3% |
| LMArena Expert | 1223 | 1407 |
| Confabulations | 22.7% | — |
| Vectara Hallucination Rate | — | 10.5% |
| MMLU | 84.6% | — |

## Multimodal

- Claude 3 Opus: 27.1 (#116)
- Qwen3.5-Flash: —

| Benchmark | Claude 3 Opus | Qwen3.5-Flash |
|---|---|---|
| LMArena Vision | 1023 | — |

## Multilingual

- Claude 3 Opus: 41.4 (#207)
- Qwen3.5-Flash: 50.5 (#121)

| Benchmark | Claude 3 Opus | Qwen3.5-Flash |
|---|---|---|
| LMArena Non-English | 1258 | 1385 |
| LMArena Chinese | 1248 | 1446 |
| LMArena French | 1275 | 1412 |
| LMArena German | 1258 | 1390 |
| LMArena Japanese | 1204 | 1368 |
| LMArena Korean | 1187 | 1344 |
| LMArena Russian | 1280 | 1379 |
| LMArena Spanish | 1246 | 1400 |

## Instruction Following

- Claude 3 Opus: 64.1 (#228)
- Qwen3.5-Flash: 72.6 (#139)

| Benchmark | Claude 3 Opus | Qwen3.5-Flash |
|---|---|---|
| LMArena Instruction Following | 1248 | 1374 |
| LiveBench Instruction Following | 63.9% | — |

## Long Context

- Claude 3 Opus: 38.2 (#202)
- Qwen3.5-Flash: 42.4 (#124)

| Benchmark | Claude 3 Opus | Qwen3.5-Flash |
|---|---|---|
| LMArena Longer Query | 1259 | 1392 |

## Writing & Preference

- Claude 3 Opus: 47.2 (#213)
- Qwen3.5-Flash: 57.9 (#122)

| Benchmark | Claude 3 Opus | Qwen3.5-Flash |
|---|---|---|
| LMArena Text | 1262 | 1397 |
| LMArena Creative Writing | 1235 | 1343 |
| LMArena Multi-Turn | 1275 | 1393 |
| LiveBench Language | 50.4% | — |

## FAQ

### Is Claude 3 Opus better than Qwen3.5-Flash?

Qwen3.5-Flash is the stronger model overall, scoring 42.5 to 29.5 on the Noometry Index.

### Is Claude 3 Opus or Qwen3.5-Flash better for coding?

Qwen3.5-Flash scores higher on coding benchmarks: 34.2 versus 32.9 in the Noometry coding category.

### How many benchmarks do Claude 3 Opus and Qwen3.5-Flash share?

24 benchmarks have published results for both models. Claude 3 Opus has 46 scored results on Noometry and Qwen3.5-Flash has 32.