Model comparison
Devstral Small 2505 vs Qwen2.5 Plus 1127
Qwen2.5 Plus 1127 is the stronger model overall, scoring 38.8 to 34.3 on the Noometry Index.
Last verified . 0 shared benchmarks.
Mistral AI
Alibaba (Qwen)Summary
- The widest gap is in reasoning, where Qwen2.5 Plus 1127 leads 25.9 to 19.7.
- Devstral Small 2505 has downloadable open weights; the other is API-only.
Side by side
| Devstral Small 2505 | Qwen2.5 Plus 1127 | |
|---|---|---|
| Provider | Mistral AI | Alibaba (Qwen) |
| Noometry Index | 34.3 | 38.8 |
| Released | 2025-05-07 | — |
| Weights | Open | Proprietary |
| Context window | 128K | — |
| Max output | 128K | — |
| Input $ / M tokens | $0.10 | — |
| Output $ / M tokens | $0.30 | — |
| Results tracked | 4 | 14 |
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Category by category
Coding Too close to call
Devstral Small 2505: 38.9 (#166), Qwen2.5 Plus 1127: 38.5 (#175)
| Benchmark | Devstral Small 2505 | Qwen2.5 Plus 1127 |
|---|---|---|
| SWE-bench Verified (bash only) | 56.4% | — |
| SciCode | 28.8% | — |
| LMArena Coding | — | 1314 |
Reasoning Qwen2.5 Plus 1127 leads
Devstral Small 2505: 19.7 (#252), Qwen2.5 Plus 1127: 25.9 (#141)
| Benchmark | Devstral Small 2505 | Qwen2.5 Plus 1127 |
|---|---|---|
| Kagi LLM Benchmark | 37.7% | — |
| CritPt | 0% | — |
| LMArena Hard Prompts | — | 1299 |
Math Not comparable
Devstral Small 2505: —, Qwen2.5 Plus 1127: 36.1 (#174)
| Benchmark | Devstral Small 2505 | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Math | — | 1298 |
Knowledge Not comparable
Devstral Small 2505: —, Qwen2.5 Plus 1127: 35.5 (#183)
| Benchmark | Devstral Small 2505 | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Expert | — | 1289 |
Multilingual Not comparable
Devstral Small 2505: —, Qwen2.5 Plus 1127: 41.9 (#201)
| 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 Not comparable
Devstral Small 2505: —, Qwen2.5 Plus 1127: 67.2 (#199)
| Benchmark | Devstral Small 2505 | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Instruction Following | — | 1275 |
Long Context Not comparable
Devstral Small 2505: —, Qwen2.5 Plus 1127: 39.2 (#184)
| Benchmark | Devstral Small 2505 | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Longer Query | — | 1292 |
Writing & Preference Not comparable
Devstral Small 2505: —, Qwen2.5 Plus 1127: 49.4 (#192)
| Benchmark | Devstral Small 2505 | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Text | — | 1299 |
| LMArena Creative Writing | — | 1262 |
| LMArena Multi-Turn | — | 1299 |
Frequently asked questions
Is Devstral Small 2505 better than Qwen2.5 Plus 1127?
Qwen2.5 Plus 1127 is the stronger model overall, scoring 38.8 to 34.3 on the Noometry Index.
Is Devstral Small 2505 or Qwen2.5 Plus 1127 better for coding?
They score almost the same on coding (38.9 vs 38.5); 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.