# Qwen2.5 Plus 1127 vs Qwen3.5 Plus

> Qwen3.5 Plus is the stronger model overall, scoring 42.3 to 38.1 on the Noometry Index.

- Canonical page: https://noometry.com/compare/qwen2-5-plus-vs-qwen3-5-plus
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in math, where Qwen3.5 Plus leads 47.9 to 33.5.

## Snapshot

| | Qwen2.5 Plus 1127 | Qwen3.5 Plus |
|---|---|---|
| Provider | Alibaba (Qwen) | Alibaba (Qwen) |
| Noometry Index | 38.1 | 42.3 |
| Rank | 179 | 103 |
| Context | — | 1M |
| Input $/M | — | $0.40 |
| Output $/M | — | $2.40 |
| Weights | Proprietary | Proprietary |

## Coding

- Qwen2.5 Plus 1127: 37.9 (#171)
- Qwen3.5 Plus: —

| Benchmark | Qwen2.5 Plus 1127 | Qwen3.5 Plus |
|---|---|---|
| LMArena Coding | 1314 | — |
| ALE-Bench | — | 621.92 |

## Agentic & Tool Use

- Qwen2.5 Plus 1127: —
- Qwen3.5 Plus: —

| Benchmark | Qwen2.5 Plus 1127 | Qwen3.5 Plus |
|---|---|---|
| Vending-Bench 2 | — | 0.54 |

## Reasoning

- Qwen2.5 Plus 1127: 24.8 (#139)
- Qwen3.5 Plus: 32.0 (#67)

| Benchmark | Qwen2.5 Plus 1127 | Qwen3.5 Plus |
|---|---|---|
| Chess Puzzles | — | 22% |
| LMArena Hard Prompts | 1299 | — |
| Mystery Game Puzzles | — | 17% |
| DTBench | — | 80.5% |
| LMCA | — | 36.4% |
| Epoch Capabilities Index | — | 146.79 |

## Math

- Qwen2.5 Plus 1127: 33.5 (#175)
- Qwen3.5 Plus: 47.9 (#55)

| Benchmark | Qwen2.5 Plus 1127 | Qwen3.5 Plus |
|---|---|---|
| OTIS Mock AIME 2024-2025 | — | 86.7% |
| LMArena Math | 1298 | — |
| FrontierMath (Feb 2025 set) | — | 21% |
| FrontierMath Tier 4 (v1) | — | 2.1% |

## Knowledge

- Qwen2.5 Plus 1127: 34.9 (#179)
- Qwen3.5 Plus: 46.0 (#78)

| Benchmark | Qwen2.5 Plus 1127 | Qwen3.5 Plus |
|---|---|---|
| GPQA Diamond | — | 84.8% |
| SimpleQA Verified | — | 25.4% |
| Vectara Hallucination Rate | — | 10.7% |
| LMArena Expert | 1289 | — |

## Multilingual

- Qwen2.5 Plus 1127: 42.1 (#196)
- Qwen3.5 Plus: —

| Benchmark | Qwen2.5 Plus 1127 | Qwen3.5 Plus |
|---|---|---|
| LMArena Non-English | 1265 | — |
| LMArena Chinese | 1314 | — |
| LMArena German | 1231 | — |
| LMArena Japanese | 1207 | — |
| LMArena Russian | 1271 | — |

## Instruction Following

- Qwen2.5 Plus 1127: 67.4 (#194)
- Qwen3.5 Plus: —

| Benchmark | Qwen2.5 Plus 1127 | Qwen3.5 Plus |
|---|---|---|
| LMArena Instruction Following | 1275 | — |

## Long Context

- Qwen2.5 Plus 1127: 39.2 (#180)
- Qwen3.5 Plus: 42.9 (#109)

| Benchmark | Qwen2.5 Plus 1127 | Qwen3.5 Plus |
|---|---|---|
| CL-bench | — | 19.8% |
| CL-bench Life | — | 12.4% |
| LMArena Longer Query | 1292 | — |

## Writing & Preference

- Qwen2.5 Plus 1127: 49.5 (#186)
- Qwen3.5 Plus: —

| Benchmark | Qwen2.5 Plus 1127 | Qwen3.5 Plus |
|---|---|---|
| LMArena Text | 1299 | — |
| LMArena Creative Writing | 1262 | — |
| LMArena Multi-Turn | 1299 | — |

## FAQ

### Is Qwen2.5 Plus 1127 better than Qwen3.5 Plus?

Qwen3.5 Plus is the stronger model overall, scoring 42.3 to 38.1 on the Noometry Index.

### How many benchmarks do Qwen2.5 Plus 1127 and Qwen3.5 Plus share?

0 benchmarks have published results for both models. Qwen2.5 Plus 1127 has 14 scored results on Noometry and Qwen3.5 Plus has 15.