Model comparison
Mistral Small 3.1 vs Step 2 16k Exp 202412
Step 2 16k Exp 202412 is the stronger model overall, scoring 39.2 to 31.7 on the Noometry Index.
Last verified . 12 shared benchmarks.
Mistral AI
StepFunSummary
- They share 12 benchmarks with published results for both. Mistral Small 3.1 scores higher in 0 categories and Step 2 16k Exp 202412 in 8 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in math, where Step 2 16k Exp 202412 leads 36.3 to 14.7.
- Mistral Small 3.1 has downloadable open weights; the other is API-only.
Side by side
| Mistral Small 3.1 | Step 2 16k Exp 202412 | |
|---|---|---|
| Provider | Mistral AI | StepFun |
| Noometry Index | 31.7 | 39.2 |
| Released | 2025-03-17 | — |
| Weights | Open | Proprietary |
| Context window | 128K | — |
| Max output | 102K | — |
| Input $ / M tokens | $0.35 | — |
| Output $ / M tokens | $0.56 | — |
| Results tracked | 28 | 12 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Too close to call
Mistral Small 3.1: 38.3 (#179), Step 2 16k Exp 202412: 38.5 (#174)
| Benchmark | Mistral Small 3.1 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Coding | 1309 | 1316 |
Reasoning Step 2 16k Exp 202412 leads
Mistral Small 3.1: 19.7 (#254), Step 2 16k Exp 202412: 25.9 (#142)
| Benchmark | Mistral Small 3.1 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Hard Prompts | 1278 | 1299 |
| Chess Puzzles | 1% | — |
| Epoch Capabilities Index | 127.48 | — |
Math Step 2 16k Exp 202412 leads
Mistral Small 3.1: 14.7 (#301), Step 2 16k Exp 202412: 36.3 (#169)
| Benchmark | Mistral Small 3.1 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Math | 1262 | 1304 |
| OTIS Mock AIME 2024-2025 | 3.9% | — |
| Omni-MATH | 24.8% | — |
Knowledge Step 2 16k Exp 202412 leads
Mistral Small 3.1: 22.6 (#271), Step 2 16k Exp 202412: 35.2 (#187)
| Benchmark | Mistral Small 3.1 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Expert | 1257 | 1279 |
| GPQA Diamond | 41.9% | — |
| MMLU-Pro | 61% | — |
| GPQA (HELM) | 39.2% | — |
Multimodal Not comparable
Mistral Small 3.1: 33.2 (#99), Step 2 16k Exp 202412: —
| Benchmark | Mistral Small 3.1 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Vision | 1136 | — |
Multilingual Step 2 16k Exp 202412 leads
Mistral Small 3.1: 41.2 (#209), Step 2 16k Exp 202412: 43.7 (#181)
| Benchmark | Mistral Small 3.1 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Non-English | 1255 | 1290 |
| LMArena Chinese | 1253 | 1331 |
| LMArena Russian | 1263 | 1324 |
| LMArena French | 1273 | — |
| LMArena German | 1266 | — |
| LMArena Japanese | 1208 | — |
| LMArena Korean | 1206 | — |
| LMArena Spanish | 1283 | — |
Instruction Following Step 2 16k Exp 202412 leads
Mistral Small 3.1: 63.6 (#230), Step 2 16k Exp 202412: 67.9 (#192)
| Benchmark | Mistral Small 3.1 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Instruction Following | 1264 | 1287 |
| IFEval | 75% | — |
Long Context Too close to call
Mistral Small 3.1: 39.5 (#178), Step 2 16k Exp 202412: 39.7 (#170)
| Benchmark | Mistral Small 3.1 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Longer Query | 1299 | 1307 |
Writing & Preference Step 2 16k Exp 202412 leads
Mistral Small 3.1: 37.0 (#259), Step 2 16k Exp 202412: 52.3 (#173)
| Benchmark | Mistral Small 3.1 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Text | 1277 | 1321 |
| LMArena Creative Writing | 1253 | 1328 |
| LMArena Multi-Turn | 1270 | 1292 |
| EQ-Bench Creative Writing | 761 | — |
| WildBench | 78.8% | — |
Frequently asked questions
Is Mistral Small 3.1 better than Step 2 16k Exp 202412?
Step 2 16k Exp 202412 is the stronger model overall, scoring 39.2 to 31.7 on the Noometry Index.
Is Mistral Small 3.1 or Step 2 16k Exp 202412 better for coding?
They score almost the same on coding (38.3 vs 38.5); test both on your own repository before choosing.
How many benchmarks do Mistral Small 3.1 and Step 2 16k Exp 202412 share?
12 benchmarks have published results for both models. Mistral Small 3.1 has 28 scored results on Noometry and Step 2 16k Exp 202412 has 12.