# Devstral Small 2505 vs Qwen2.5 Plus 1127

> Qwen2.5 Plus 1127 is the stronger model overall, scoring 38.1 to 33.9 on the Noometry Index.

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

## Summary

- The widest gap is in reasoning, where Qwen2.5 Plus 1127 leads 24.8 to 19.1.
- Devstral Small 2505 has downloadable open weights; the other is API-only.

## Snapshot

| | Devstral Small 2505 | Qwen2.5 Plus 1127 |
|---|---|---|
| Provider | Mistral AI | Alibaba (Qwen) |
| Noometry Index | 33.9 | 38.1 |
| Rank | 228 | 179 |
| Context | 128K | — |
| Input $/M | $0.10 | — |
| Output $/M | $0.30 | — |
| Weights | Open | Proprietary |

## Coding

- Devstral Small 2505: 38.6 (#160)
- Qwen2.5 Plus 1127: 37.9 (#171)

| Benchmark | Devstral Small 2505 | Qwen2.5 Plus 1127 |
|---|---|---|
| SWE-bench Verified (bash only) | 56.4% | — |
| SciCode | 28.8% | — |
| LMArena Coding | — | 1314 |

## Reasoning

- Devstral Small 2505: 19.1 (#243)
- Qwen2.5 Plus 1127: 24.8 (#139)

| Benchmark | Devstral Small 2505 | Qwen2.5 Plus 1127 |
|---|---|---|
| Kagi LLM Benchmark | 37.7% | — |
| CritPt | 0% | — |
| LMArena Hard Prompts | — | 1299 |

## Math

- Devstral Small 2505: —
- Qwen2.5 Plus 1127: 33.5 (#175)

| Benchmark | Devstral Small 2505 | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Math | — | 1298 |

## Knowledge

- Devstral Small 2505: —
- Qwen2.5 Plus 1127: 34.9 (#179)

| Benchmark | Devstral Small 2505 | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Expert | — | 1289 |

## Multilingual

- Devstral Small 2505: —
- Qwen2.5 Plus 1127: 42.1 (#196)

| Benchmark | Devstral Small 2505 | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Non-English | — | 1265 |
| LMArena Chinese | — | 1314 |
| LMArena German | — | 1231 |
| LMArena Japanese | — | 1207 |
| LMArena Russian | — | 1271 |

## Instruction Following

- Devstral Small 2505: —
- Qwen2.5 Plus 1127: 67.4 (#194)

| Benchmark | Devstral Small 2505 | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Instruction Following | — | 1275 |

## Long Context

- Devstral Small 2505: —
- Qwen2.5 Plus 1127: 39.2 (#180)

| Benchmark | Devstral Small 2505 | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Longer Query | — | 1292 |

## Writing & Preference

- Devstral Small 2505: —
- Qwen2.5 Plus 1127: 49.5 (#186)

| Benchmark | Devstral Small 2505 | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Text | — | 1299 |
| LMArena Creative Writing | — | 1262 |
| LMArena Multi-Turn | — | 1299 |

## FAQ

### Is Devstral Small 2505 better than Qwen2.5 Plus 1127?

Qwen2.5 Plus 1127 is the stronger model overall, scoring 38.1 to 33.9 on the Noometry Index.

### Is Devstral Small 2505 or Qwen2.5 Plus 1127 better for coding?

They score almost the same on coding (38.6 vs 37.9); test both on your own repository before choosing.

### How many benchmarks do Devstral Small 2505 and Qwen2.5 Plus 1127 share?

0 benchmarks have published results for both models. Devstral Small 2505 has 4 scored results on Noometry and Qwen2.5 Plus 1127 has 14.