Model comparison
Mistral Medium 3.1 vs Mistral Small 3.1
Mistral Medium 3.1 and Mistral Small 3.1 score almost the same on the Noometry Index (31.9 vs 31.7), so choose on price, context window or the category you care about most.
Last verified . 1 shared benchmarks.
Mistral AISummary
- They share 1 benchmark with published results for both. Mistral Medium 3.1 scores higher in 1 category and Mistral Small 3.1 in 1 category; 2 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Mistral Medium 3.1 leads 55.5 to 37.0.
- Mistral Small 3.1 is cheaper at $0.35 / $0.56 per million input/output tokens, against $0.40 / $2 for Mistral Medium 3.1.
- Mistral Medium 3.1 accepts more context: 131K tokens versus 128K.
- Mistral Small 3.1 has downloadable open weights; the other is API-only.
Side by side
| Mistral Medium 3.1 | Mistral Small 3.1 | |
|---|---|---|
| Provider | Mistral AI | Mistral AI |
| Noometry Index | 31.9 | 31.7 |
| Released | — | 2025-03-17 |
| Weights | Proprietary | Open |
| Context window | 131K | 128K |
| Max output | 105K | 102K |
| Input $ / M tokens | $0.40 | $0.35 |
| Output $ / M tokens | $2 | $0.56 |
| Results tracked | 3 | 28 |
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Category by category
Coding Not comparable
Mistral Medium 3.1: —, Mistral Small 3.1: 38.3 (#179)
| Benchmark | Mistral Medium 3.1 | Mistral Small 3.1 |
|---|---|---|
| LMArena Coding | — | 1309 |
Reasoning Mistral Small 3.1 leads
Mistral Medium 3.1: 10.6 (#341), Mistral Small 3.1: 19.7 (#254)
| Benchmark | Mistral Medium 3.1 | Mistral Small 3.1 |
|---|---|---|
| NYT Connections (extended) | 6.5% | — |
| Chess Puzzles | — | 1% |
| Thematic Generalization | 20.3% | — |
| LMArena Hard Prompts | — | 1278 |
| Epoch Capabilities Index | — | 127.48 |
Math Not comparable
Mistral Medium 3.1: —, Mistral Small 3.1: 14.7 (#301)
| Benchmark | Mistral Medium 3.1 | Mistral Small 3.1 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | — | 3.9% |
| Omni-MATH | — | 24.8% |
| LMArena Math | — | 1262 |
Knowledge Not comparable
Mistral Medium 3.1: —, Mistral Small 3.1: 22.6 (#271)
| Benchmark | Mistral Medium 3.1 | Mistral Small 3.1 |
|---|---|---|
| GPQA Diamond | — | 41.9% |
| MMLU-Pro | — | 61% |
| GPQA (HELM) | — | 39.2% |
| LMArena Expert | — | 1257 |
Multimodal Not comparable
Mistral Medium 3.1: —, Mistral Small 3.1: 33.2 (#99)
| Benchmark | Mistral Medium 3.1 | Mistral Small 3.1 |
|---|---|---|
| LMArena Vision | — | 1136 |
Multilingual Not comparable
Mistral Medium 3.1: —, Mistral Small 3.1: 41.2 (#209)
| Benchmark | Mistral Medium 3.1 | Mistral Small 3.1 |
|---|---|---|
| LMArena Non-English | — | 1255 |
| LMArena Chinese | — | 1253 |
| LMArena French | — | 1273 |
| LMArena German | — | 1266 |
| LMArena Japanese | — | 1208 |
| LMArena Korean | — | 1206 |
| LMArena Russian | — | 1263 |
| LMArena Spanish | — | 1283 |
Instruction Following Not comparable
Mistral Medium 3.1: —, Mistral Small 3.1: 63.6 (#230)
| Benchmark | Mistral Medium 3.1 | Mistral Small 3.1 |
|---|---|---|
| IFEval | — | 75% |
| LMArena Instruction Following | — | 1264 |
Long Context Not comparable
Mistral Medium 3.1: —, Mistral Small 3.1: 39.5 (#178)
| Benchmark | Mistral Medium 3.1 | Mistral Small 3.1 |
|---|---|---|
| LMArena Longer Query | — | 1299 |
Writing & Preference Mistral Medium 3.1 leads
Mistral Medium 3.1: 55.5 (#145), Mistral Small 3.1: 37.0 (#259)
| Benchmark | Mistral Medium 3.1 | Mistral Small 3.1 |
|---|---|---|
| EQ-Bench Creative Writing | 1476 | 761 |
| LMArena Text | — | 1277 |
| LMArena Creative Writing | — | 1253 |
| WildBench | — | 78.8% |
| LMArena Multi-Turn | — | 1270 |
Frequently asked questions
Is Mistral Medium 3.1 better than Mistral Small 3.1?
Mistral Medium 3.1 and Mistral Small 3.1 score almost the same on the Noometry Index (31.9 vs 31.7), so choose on price, context window or the category you care about most.
Which is cheaper, Mistral Medium 3.1 or Mistral Small 3.1?
Mistral Small 3.1 is cheaper. It lists at $0.35 per million input tokens and $0.56 per million output tokens; Mistral Medium 3.1 lists at $0.40 and $2.
Which has the bigger context window?
Mistral Medium 3.1 does, with 131K tokens against 128K.
How many benchmarks do Mistral Medium 3.1 and Mistral Small 3.1 share?
1 benchmark has published results for both models. Mistral Medium 3.1 has 3 scored results on Noometry and Mistral Small 3.1 has 28.