Model comparison
Devstral Small 2505 vs Yi-1.5-34B
Devstral Small 2505 is the stronger model overall, scoring 34.3 to 30.6 on the Noometry Index.
Last verified . 0 shared benchmarks.
Mistral AISummary
- The widest gap is in coding, where Devstral Small 2505 leads 38.9 to 32.4.
Side by side
| Devstral Small 2505 | Yi-1.5-34B | |
|---|---|---|
| Provider | Mistral AI | 01.AI |
| Noometry Index | 34.3 | 30.6 |
| Released | 2025-05-07 | 2024-05-13 |
| Weights | Open | Open |
| Context window | 128K | — |
| Max output | 128K | — |
| Input $ / M tokens | $0.10 | — |
| Output $ / M tokens | $0.30 | — |
| Results tracked | 4 | 21 |
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Category by category
Coding Devstral Small 2505 leads
Devstral Small 2505: 38.9 (#166), Yi-1.5-34B: 32.4 (#272)
| Benchmark | Devstral Small 2505 | Yi-1.5-34B |
|---|---|---|
| SWE-bench Verified (bash only) | 56.4% | — |
| SciCode | 28.8% | — |
| BigCodeBench Instruct | — | 33.9% |
| LMArena Coding | — | 1169 |
| BigCodeBench Complete | — | 43.8% |
Reasoning Yi-1.5-34B leads
Devstral Small 2505: 19.7 (#252), Yi-1.5-34B: 22.5 (#191)
| Benchmark | Devstral Small 2505 | Yi-1.5-34B |
|---|---|---|
| Kagi LLM Benchmark | 37.7% | — |
| CritPt | 0% | — |
| LMArena Hard Prompts | — | 1160 |
Math Not comparable
Devstral Small 2505: —, Yi-1.5-34B: 27.5 (#249)
| Benchmark | Devstral Small 2505 | Yi-1.5-34B |
|---|---|---|
| LMArena Math | — | 1182 |
| MATH Level 5 | — | 25.5% |
Knowledge Not comparable
Devstral Small 2505: —, Yi-1.5-34B: 14.8 (#295)
| Benchmark | Devstral Small 2505 | Yi-1.5-34B |
|---|---|---|
| GPQA Diamond | — | 32% |
| LMArena Expert | — | 1144 |
Multilingual Not comparable
Devstral Small 2505: —, Yi-1.5-34B: 32.3 (#256)
| Benchmark | Devstral Small 2505 | Yi-1.5-34B |
|---|---|---|
| LMArena Non-English | — | 1121 |
| LMArena Chinese | — | 1213 |
| LMArena French | — | 1156 |
| LMArena German | — | 1111 |
| LMArena Japanese | — | 1021 |
| LMArena Korean | — | 1005 |
| LMArena Russian | — | 1091 |
| LMArena Spanish | — | 1121 |
Instruction Following Not comparable
Devstral Small 2505: —, Yi-1.5-34B: 59.2 (#257)
| Benchmark | Devstral Small 2505 | Yi-1.5-34B |
|---|---|---|
| LMArena Instruction Following | — | 1139 |
Long Context Not comparable
Devstral Small 2505: —, Yi-1.5-34B: 34.6 (#248)
| Benchmark | Devstral Small 2505 | Yi-1.5-34B |
|---|---|---|
| LMArena Longer Query | — | 1143 |
Writing & Preference Not comparable
Devstral Small 2505: —, Yi-1.5-34B: 37.4 (#257)
| Benchmark | Devstral Small 2505 | Yi-1.5-34B |
|---|---|---|
| LMArena Text | — | 1173 |
| LMArena Creative Writing | — | 1135 |
| LMArena Multi-Turn | — | 1153 |
Frequently asked questions
Is Devstral Small 2505 better than Yi-1.5-34B?
Devstral Small 2505 is the stronger model overall, scoring 34.3 to 30.6 on the Noometry Index.
Is Devstral Small 2505 or Yi-1.5-34B better for coding?
Devstral Small 2505 scores higher on coding benchmarks: 38.9 versus 32.4 in the Noometry coding category.
How many benchmarks do Devstral Small 2505 and Yi-1.5-34B share?
0 benchmarks have published results for both models. Devstral Small 2505 has 4 scored results on Noometry and Yi-1.5-34B has 21.