Model comparison
Devstral Small 2505 vs Step 1o Turbo 202506
Step 1o Turbo 202506 is the stronger model overall, scoring 39.7 to 34.3 on the Noometry Index.
Last verified . 0 shared benchmarks.
Mistral AI
StepFunSummary
- The widest gap is in reasoning, where Step 1o Turbo 202506 leads 26.8 to 19.7.
- Devstral Small 2505 has downloadable open weights; the other is API-only.
Side by side
| Devstral Small 2505 | Step 1o Turbo 202506 | |
|---|---|---|
| Provider | Mistral AI | StepFun |
| Noometry Index | 34.3 | 39.7 |
| 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 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Too close to call
Devstral Small 2505: 38.9 (#166), Step 1o Turbo 202506: 39.2 (#160)
| Benchmark | Devstral Small 2505 | Step 1o Turbo 202506 |
|---|---|---|
| SWE-bench Verified (bash only) | 56.4% | — |
| SciCode | 28.8% | — |
| LMArena Coding | — | 1339 |
Reasoning Step 1o Turbo 202506 leads
Devstral Small 2505: 19.7 (#252), Step 1o Turbo 202506: 26.8 (#129)
| Benchmark | Devstral Small 2505 | Step 1o Turbo 202506 |
|---|---|---|
| Kagi LLM Benchmark | 37.7% | — |
| CritPt | 0% | — |
| LMArena Hard Prompts | — | 1335 |
Math Not comparable
Devstral Small 2505: —, Step 1o Turbo 202506: 36.6 (#164)
| Benchmark | Devstral Small 2505 | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Math | — | 1318 |
Knowledge Not comparable
Devstral Small 2505: —, Step 1o Turbo 202506: 36.1 (#176)
| Benchmark | Devstral Small 2505 | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Expert | — | 1308 |
Multimodal Not comparable
Devstral Small 2505: —, Step 1o Turbo 202506: 36.1 (#80)
| Benchmark | Devstral Small 2505 | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Vision | — | 1186 |
Multilingual Not comparable
Devstral Small 2505: —, Step 1o Turbo 202506: 45.3 (#173)
| Benchmark | Devstral Small 2505 | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Non-English | — | 1313 |
| LMArena Chinese | — | 1380 |
| LMArena German | — | 1314 |
| LMArena Russian | — | 1327 |
Instruction Following Not comparable
Devstral Small 2505: —, Step 1o Turbo 202506: 69.2 (#176)
| Benchmark | Devstral Small 2505 | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Instruction Following | — | 1310 |
Long Context Not comparable
Devstral Small 2505: —, Step 1o Turbo 202506: 41.0 (#146)
| Benchmark | Devstral Small 2505 | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Longer Query | — | 1348 |
Writing & Preference Not comparable
Devstral Small 2505: —, Step 1o Turbo 202506: 53.1 (#160)
| Benchmark | Devstral Small 2505 | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Text | — | 1336 |
| LMArena Creative Writing | — | 1307 |
| LMArena Multi-Turn | — | 1340 |
Frequently asked questions
Is Devstral Small 2505 better than Step 1o Turbo 202506?
Step 1o Turbo 202506 is the stronger model overall, scoring 39.7 to 34.3 on the Noometry Index.
Is Devstral Small 2505 or Step 1o Turbo 202506 better for coding?
They score almost the same on coding (38.9 vs 39.2); test both on your own repository before choosing.
How many benchmarks do Devstral Small 2505 and Step 1o Turbo 202506 share?
0 benchmarks have published results for both models. Devstral Small 2505 has 4 scored results on Noometry and Step 1o Turbo 202506 has 14.