Model comparison
Devstral Small 2505 vs Qwen1.5 4b Chat
Devstral Small 2505 is the stronger model overall, scoring 34.3 to 28.8 on the Noometry Index.
Last verified . 0 shared benchmarks.
Mistral AI
Alibaba (Qwen)Summary
- The widest gap is in coding, where Devstral Small 2505 leads 38.9 to 29.1.
Side by side
| Devstral Small 2505 | Qwen1.5 4b Chat | |
|---|---|---|
| Provider | Mistral AI | Alibaba (Qwen) |
| Noometry Index | 34.3 | 28.8 |
| Released | 2025-05-07 | — |
| Weights | Open | Open |
| Context window | 128K | — |
| Max output | 128K | — |
| Input $ / M tokens | $0.10 | — |
| Output $ / M tokens | $0.30 | — |
| Results tracked | 4 | 13 |
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Category by category
Coding Devstral Small 2505 leads
Devstral Small 2505: 38.9 (#166), Qwen1.5 4b Chat: 29.1 (#308)
| Benchmark | Devstral Small 2505 | Qwen1.5 4b Chat |
|---|---|---|
| SWE-bench Verified (bash only) | 56.4% | — |
| SciCode | 28.8% | — |
| LMArena Coding | — | 999 |
Reasoning Devstral Small 2505 leads
Devstral Small 2505: 19.7 (#252), Qwen1.5 4b Chat: 18.5 (#279)
| Benchmark | Devstral Small 2505 | Qwen1.5 4b Chat |
|---|---|---|
| Kagi LLM Benchmark | 37.7% | — |
| CritPt | 0% | — |
| LMArena Hard Prompts | — | 976 |
Math Not comparable
Devstral Small 2505: —, Qwen1.5 4b Chat: 30.4 (#234)
| Benchmark | Devstral Small 2505 | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Math | — | 1026 |
Knowledge Not comparable
Devstral Small 2505: —, Qwen1.5 4b Chat: 26.7 (#255)
| Benchmark | Devstral Small 2505 | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Expert | — | 980 |
Multilingual Not comparable
Devstral Small 2505: —, Qwen1.5 4b Chat: 24.1 (#290)
| Benchmark | Devstral Small 2505 | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Non-English | — | 979 |
| LMArena Chinese | — | 1024 |
| LMArena German | — | 902 |
| LMArena Russian | — | 952 |
Instruction Following Not comparable
Devstral Small 2505: —, Qwen1.5 4b Chat: 49.0 (#300)
| Benchmark | Devstral Small 2505 | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Instruction Following | — | 978 |
Long Context Not comparable
Devstral Small 2505: —, Qwen1.5 4b Chat: 30.1 (#290)
| Benchmark | Devstral Small 2505 | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Longer Query | — | 988 |
Writing & Preference Not comparable
Devstral Small 2505: —, Qwen1.5 4b Chat: 23.8 (#309)
| Benchmark | Devstral Small 2505 | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Text | — | 997 |
| LMArena Creative Writing | — | 969 |
| LMArena Multi-Turn | — | 977 |
Frequently asked questions
Is Devstral Small 2505 better than Qwen1.5 4b Chat?
Devstral Small 2505 is the stronger model overall, scoring 34.3 to 28.8 on the Noometry Index.
Is Devstral Small 2505 or Qwen1.5 4b Chat better for coding?
Devstral Small 2505 scores higher on coding benchmarks: 38.9 versus 29.1 in the Noometry coding category.
How many benchmarks do Devstral Small 2505 and Qwen1.5 4b Chat share?
0 benchmarks have published results for both models. Devstral Small 2505 has 4 scored results on Noometry and Qwen1.5 4b Chat has 13.