Model comparison
Mistral Medium 3.5 vs Step 3
Mistral Medium 3.5 and Step 3 score almost the same on the Noometry Index (40.2 vs 40.5), so choose on price, context window or the category you care about most.
Last verified . 17 shared benchmarks.
Mistral AI
StepFunSummary
- They share 17 benchmarks with published results for both. Mistral Medium 3.5 scores higher in 7 categories and Step 3 in 2 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Step 3 leads 28.4 to 17.3.
- The biggest single-benchmark swing is Kagi LLM Benchmark: 41.4% for Mistral Medium 3.5 and 62.3% for Step 3.
Side by side
| Mistral Medium 3.5 | Step 3 | |
|---|---|---|
| Provider | Mistral AI | StepFun |
| Noometry Index | 40.2 | 40.5 |
| Released | — | — |
| Weights | Open | Open |
| Context window | 262K | — |
| Max output | 210K | — |
| Input $ / M tokens | $1.50 | — |
| Output $ / M tokens | $7.50 | — |
| Results tracked | 22 | 17 |
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Category by category
Coding Step 3 leads
Mistral Medium 3.5: 36.0 (#213), Step 3: 40.1 (#147)
| Benchmark | Mistral Medium 3.5 | Step 3 |
|---|---|---|
| LMArena Coding | 1461 | 1367 |
| LMArena WebDev | 1264 | — |
Reasoning Step 3 leads
Mistral Medium 3.5: 17.3 (#295), Step 3: 28.4 (#105)
| Benchmark | Mistral Medium 3.5 | Step 3 |
|---|---|---|
| Kagi LLM Benchmark | 41.4% | 62.3% |
| LMArena Hard Prompts | 1436 | 1355 |
| NYT Connections (extended) | 12.9% | — |
| Epoch Capabilities Index | 141.35 | — |
Math Mistral Medium 3.5 leads
Mistral Medium 3.5: 39.1 (#113), Step 3: 37.6 (#148)
| Benchmark | Mistral Medium 3.5 | Step 3 |
|---|---|---|
| LMArena Math | 1431 | 1366 |
Knowledge Mistral Medium 3.5 leads
Mistral Medium 3.5: 40.0 (#126), Step 3: 36.8 (#164)
| Benchmark | Mistral Medium 3.5 | Step 3 |
|---|---|---|
| LMArena Expert | 1432 | 1333 |
Multimodal Mistral Medium 3.5 leads
Mistral Medium 3.5: 38.3 (#65), Step 3: 35.5 (#86)
| Benchmark | Mistral Medium 3.5 | Step 3 |
|---|---|---|
| LMArena Vision | 1223 | 1177 |
Multilingual Mistral Medium 3.5 leads
Mistral Medium 3.5: 51.9 (#100), Step 3: 46.3 (#159)
| Benchmark | Mistral Medium 3.5 | Step 3 |
|---|---|---|
| LMArena Non-English | 1404 | 1327 |
| LMArena Chinese | 1442 | 1397 |
| LMArena German | 1451 | 1371 |
| LMArena Korean | 1385 | 1269 |
| LMArena Russian | 1395 | 1331 |
| LMArena Spanish | 1409 | 1371 |
| LMArena French | 1448 | — |
Instruction Following Mistral Medium 3.5 leads
Mistral Medium 3.5: 74.6 (#90), Step 3: 70.4 (#164)
| Benchmark | Mistral Medium 3.5 | Step 3 |
|---|---|---|
| LMArena Instruction Following | 1415 | 1332 |
Long Context Mistral Medium 3.5 leads
Mistral Medium 3.5: 43.2 (#103), Step 3: 40.3 (#157)
| Benchmark | Mistral Medium 3.5 | Step 3 |
|---|---|---|
| LMArena Longer Query | 1415 | 1326 |
Writing & Preference Mistral Medium 3.5 leads
Mistral Medium 3.5: 58.5 (#117), Step 3: 54.3 (#151)
| Benchmark | Mistral Medium 3.5 | Step 3 |
|---|---|---|
| LMArena Text | 1421 | 1350 |
| LMArena Creative Writing | 1374 | 1321 |
| LMArena Multi-Turn | 1423 | 1341 |
| EQ-Bench 4 | 993 | — |
Frequently asked questions
Is Mistral Medium 3.5 better than Step 3?
Mistral Medium 3.5 and Step 3 score almost the same on the Noometry Index (40.2 vs 40.5), so choose on price, context window or the category you care about most.
Is Mistral Medium 3.5 or Step 3 better for coding?
Step 3 scores higher on coding benchmarks: 40.1 versus 36.0 in the Noometry coding category.
How many benchmarks do Mistral Medium 3.5 and Step 3 share?
17 benchmarks have published results for both models. Mistral Medium 3.5 has 22 scored results on Noometry and Step 3 has 17.