# Claude Opus 5.5 vs Qwen2.5 Plus 1127

> Claude Opus 5.5 is the stronger model overall, scoring 68.6 to 38.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-opus-5-5-vs-qwen2-5-plus
- Last updated: 2026-10-10
- Shared benchmarks: 12

## Summary

- They share 12 benchmarks with published results for both. Claude Opus 5.5 scores higher in 8 categories and Qwen2.5 Plus 1127 in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Opus 5.5 leads 91.8 to 36.1.

## Snapshot

| | Claude Opus 5.5 | Qwen2.5 Plus 1127 |
|---|---|---|
| Provider | Anthropic | Alibaba (Qwen) |
| Noometry Index | 68.6 | 38.8 |
| Rank | 3 | 181 |
| Context | 1M | — |
| Input $/M | $4 | — |
| Output $/M | $20 | — |
| Weights | Proprietary | Proprietary |

## Coding

- Claude Opus 5.5: 71.9 (#3)
- Qwen2.5 Plus 1127: 38.5 (#175)

| Benchmark | Claude Opus 5.5 | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Coding | 1547 | 1314 |
| FrontierCode | 54.6% | — |
| CursorBench | 57.8% | — |
| LMArena WebDev | 1813 | — |
| FrontierSWE | 62.3% | — |
| SciCode | 66.9% | — |
| MirrorCode | 77.4% | — |
| ALE-Bench | 2,147 | — |

## Agentic & Tool Use

- Claude Opus 5.5: 45.3 (#15)
- Qwen2.5 Plus 1127: —

| Benchmark | Claude Opus 5.5 | Qwen2.5 Plus 1127 |
|---|---|---|
| APEX-Agents | 73.5% | — |
| GDP.pdf | 30.6% | — |
| Vending-Bench 2 | 9,235 | — |

## Reasoning

- Claude Opus 5.5: 80.2 (#3)
- Qwen2.5 Plus 1127: 25.9 (#141)

| Benchmark | Claude Opus 5.5 | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Hard Prompts | 1535 | 1299 |
| ARC-AGI-2 | 93.3% | — |
| NYT Connections (extended) | 88.5% | — |
| ARC-AGI-1 | 98.5% | — |
| CritPt | 31.7% | — |
| EBR-Bench | 71.4% | — |
| Mystery Game Puzzles | 71% | — |
| DTBench | 98.9% | — |
| LMCA | 68.2% | — |
| Epoch Capabilities Index | 167.33 | — |

## Math

- Claude Opus 5.5: 91.8 (#3)
- Qwen2.5 Plus 1127: 36.1 (#174)

| Benchmark | Claude Opus 5.5 | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Math | 1506 | 1298 |
| FrontierMath (Tiers 1-3) | 91.2% | — |
| FrontierMath Tier 4 | 95% | — |
| OTIS Mock AIME 2024-2025 | 100% | — |
| ProofBench | 100% | — |
| FrontierMath Erdős | 2.9% | — |

## Knowledge

- Claude Opus 5.5: 66.4 (#10)
- Qwen2.5 Plus 1127: 35.5 (#183)

| Benchmark | Claude Opus 5.5 | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Expert | 1547 | 1289 |
| GPQA Diamond | 90.6% | — |
| SimpleQA Verified | 72.2% | — |

## Multimodal

- Claude Opus 5.5: 57.8 (#1)
- Qwen2.5 Plus 1127: —

| Benchmark | Claude Opus 5.5 | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Vision | 1321 | — |
| Blueprint-Bench 2 | 51.2% | — |
| Furniture Assembly | 83.3% | — |

## Multilingual

- Claude Opus 5.5: 59.1 (#2)
- Qwen2.5 Plus 1127: 41.9 (#201)

| Benchmark | Claude Opus 5.5 | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Non-English | 1507 | 1265 |
| LMArena Chinese | 1588 | 1314 |
| LMArena Russian | 1520 | 1271 |
| LMArena French | 1514 | — |
| LMArena German | — | 1231 |
| LMArena Japanese | — | 1207 |
| LMArena Spanish | 1507 | — |

## Instruction Following

- Claude Opus 5.5: 80.0 (#3)
- Qwen2.5 Plus 1127: 67.2 (#199)

| Benchmark | Claude Opus 5.5 | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Instruction Following | 1537 | 1275 |

## Long Context

- Claude Opus 5.5: 47.1 (#19)
- Qwen2.5 Plus 1127: 39.2 (#184)

| Benchmark | Claude Opus 5.5 | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Longer Query | 1532 | 1292 |

## Writing & Preference

- Claude Opus 5.5: 78.2 (#3)
- Qwen2.5 Plus 1127: 49.4 (#192)

| Benchmark | Claude Opus 5.5 | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Text | 1515 | 1299 |
| LMArena Creative Writing | 1533 | 1262 |
| LMArena Multi-Turn | 1499 | 1299 |
| EQ-Bench Creative Writing | 2050 | — |

## FAQ

### Is Claude Opus 5.5 better than Qwen2.5 Plus 1127?

Claude Opus 5.5 is the stronger model overall, scoring 68.6 to 38.8 on the Noometry Index.

### Is Claude Opus 5.5 or Qwen2.5 Plus 1127 better for coding?

Claude Opus 5.5 scores higher on coding benchmarks: 71.9 versus 38.5 in the Noometry coding category.

### How many benchmarks do Claude Opus 5.5 and Qwen2.5 Plus 1127 share?

12 benchmarks have published results for both models. Claude Opus 5.5 has 44 scored results on Noometry and Qwen2.5 Plus 1127 has 14.