Model comparison
Devstral Small 2505 vs Mistral Small
Devstral Small 2505 and Mistral Small score almost the same on the Noometry Index (34.3 vs 33.4), so choose on price, context window or the category you care about most.
Last verified . 3 shared benchmarks.
Mistral AISummary
- They share 3 benchmarks with published results for both. Devstral Small 2505 scores higher in 1 category and Mistral Small in 1 category; one gap is clear of the uncertainty.
- The widest gap is in coding, where Devstral Small 2505 leads 38.9 to 34.0.
- Devstral Small 2505 is cheaper at $0.10 / $0.30 per million input/output tokens, against $0.15 / $0.60 for Mistral Small.
- Mistral Small accepts more context: 262K tokens versus 128K.
Side by side
| Devstral Small 2505 | Mistral Small | |
|---|---|---|
| Provider | Mistral AI | Mistral AI |
| Noometry Index | 34.3 | 33.4 |
| Released | 2025-05-07 | 2024-02-26 |
| Weights | Open | Open |
| Context window | 128K | 262K |
| Max output | 128K | 256K |
| Input $ / M tokens | $0.10 | $0.15 |
| Output $ / M tokens | $0.30 | $0.60 |
| Results tracked | 4 | 39 |
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Category by category
Coding Devstral Small 2505 leads
Devstral Small 2505: 38.9 (#166), Mistral Small: 34.0 (#247)
| Benchmark | Devstral Small 2505 | Mistral Small |
|---|---|---|
| SciCode | 28.8% | 26.5% |
| SWE-bench Verified (bash only) | 56.4% | — |
| BigCodeBench Instruct | — | 36.1% |
| LiveBench Coding | — | 36.2% |
| LMArena Coding | — | 1362 |
| BigCodeBench Complete | — | 46.6% |
| ALE-Bench | — | 497.62 |
Agentic & Tool Use Not comparable
Devstral Small 2505: —, Mistral Small: 28.1 (#93)
| Benchmark | Devstral Small 2505 | Mistral Small |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 37.1% |
Reasoning Too close to call
Devstral Small 2505: 19.7 (#252), Mistral Small: 19.8 (#250)
| Benchmark | Devstral Small 2505 | Mistral Small |
|---|---|---|
| Kagi LLM Benchmark | 37.7% | 37.8% |
| CritPt | 0% | 0% |
| LiveBench Reasoning | — | 44.8% |
| LMArena Hard Prompts | — | 1335 |
| DTBench | — | 70.9% |
| LiveBench Data Analysis | — | 53.7% |
| LMCA | — | 20.6% |
| LiveBench | — | 44% |
Math Not comparable
Devstral Small 2505: —, Mistral Small: 16.4 (#293)
| Benchmark | Devstral Small 2505 | Mistral Small |
|---|---|---|
| OTIS Mock AIME 2024-2025 | — | 5.8% |
| LiveBench Math | — | 39.9% |
| LMArena Math | — | 1341 |
| MATH Level 5 | — | 46.8% |
Knowledge Not comparable
Devstral Small 2505: —, Mistral Small: 31.0 (#222)
| Benchmark | Devstral Small 2505 | Mistral Small |
|---|---|---|
| GPQA Diamond | — | 47.5% |
| Vectara Hallucination Rate | — | 5.1% |
| LMArena Expert | — | 1291 |
| MMLU | — | 68.7% |
Multimodal Not comparable
Devstral Small 2505: —, Mistral Small: 33.5 (#96)
| Benchmark | Devstral Small 2505 | Mistral Small |
|---|---|---|
| LMArena Vision | — | 1142 |
Multilingual Not comparable
Devstral Small 2505: —, Mistral Small: 45.5 (#169)
| Benchmark | Devstral Small 2505 | Mistral Small |
|---|---|---|
| LMArena Non-English | — | 1315 |
| LMArena Chinese | — | 1340 |
| LMArena French | — | 1337 |
| LMArena German | — | 1340 |
| LMArena Japanese | — | 1275 |
| LMArena Korean | — | 1259 |
| LMArena Russian | — | 1324 |
| LMArena Spanish | — | 1346 |
Instruction Following Not comparable
Devstral Small 2505: —, Mistral Small: 66.4 (#209)
| Benchmark | Devstral Small 2505 | Mistral Small |
|---|---|---|
| LiveBench Instruction Following | — | 63.7% |
| LMArena Instruction Following | — | 1310 |
Long Context Not comparable
Devstral Small 2505: —, Mistral Small: 40.4 (#156)
| Benchmark | Devstral Small 2505 | Mistral Small |
|---|---|---|
| LMArena Longer Query | — | 1327 |
Writing & Preference Not comparable
Devstral Small 2505: —, Mistral Small: 52.5 (#171)
| Benchmark | Devstral Small 2505 | Mistral Small |
|---|---|---|
| LMArena Text | — | 1338 |
| LMArena Creative Writing | — | 1305 |
| LMArena Multi-Turn | — | 1344 |
| LiveBench Language | — | 30.5% |
Frequently asked questions
Is Devstral Small 2505 better than Mistral Small?
Devstral Small 2505 and Mistral Small score almost the same on the Noometry Index (34.3 vs 33.4), so choose on price, context window or the category you care about most.
Which is cheaper, Devstral Small 2505 or Mistral Small?
Devstral Small 2505 is cheaper. It lists at $0.10 per million input tokens and $0.30 per million output tokens; Mistral Small lists at $0.15 and $0.60.
Is Devstral Small 2505 or Mistral Small better for coding?
Devstral Small 2505 scores higher on coding benchmarks: 38.9 versus 34.0 in the Noometry coding category.
Which has the bigger context window?
Mistral Small does, with 262K tokens against 128K.
How many benchmarks do Devstral Small 2505 and Mistral Small share?
3 benchmarks have published results for both models. Devstral Small 2505 has 4 scored results on Noometry and Mistral Small has 39.