Model comparison
Claude 2.1 vs Mistral Small 3.1
Mistral Small 3.1 is the stronger model overall, scoring 31.7 to 25.2 on the Noometry Index.
Last verified . 3 shared benchmarks.
Mistral AISummary
- They share 3 benchmarks with published results for both. Claude 2.1 scores higher in 1 category and Mistral Small 3.1 in 3 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in coding, where Mistral Small 3.1 leads 38.3 to 26.2.
- The biggest single-benchmark swing is GPQA Diamond: 33% for Claude 2.1 and 41.9% for Mistral Small 3.1.
- Mistral Small 3.1 has downloadable open weights; the other is API-only.
Side by side
| Claude 2.1 | Mistral Small 3.1 | |
|---|---|---|
| Provider | Anthropic | Mistral AI |
| Noometry Index | 25.2 | 31.7 |
| Released | 2023-11-21 | 2025-03-17 |
| Weights | Proprietary | Open |
| Context window | — | 128K |
| Max output | — | 102K |
| Input $ / M tokens | — | $0.35 |
| Output $ / M tokens | — | $0.56 |
| Results tracked | 7 | 28 |
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Category by category
Coding Mistral Small 3.1 leads
Claude 2.1: 26.2 (#327), Mistral Small 3.1: 38.3 (#179)
| Benchmark | Claude 2.1 | Mistral Small 3.1 |
|---|---|---|
| WeirdML | 7.1% | — |
| LMArena Coding | — | 1309 |
Reasoning Claude 2.1 leads
Claude 2.1: 21.4 (#221), Mistral Small 3.1: 19.7 (#254)
| Benchmark | Claude 2.1 | Mistral Small 3.1 |
|---|---|---|
| Epoch Capabilities Index | 119.27 | 127.48 |
| Chess Puzzles | — | 1% |
| LMArena Hard Prompts | — | 1278 |
| DTBench | 51% | — |
| ForecastBench | 54.2 | — |
Math Mistral Small 3.1 leads
Claude 2.1: 10.2 (#315), Mistral Small 3.1: 14.7 (#301)
| Benchmark | Claude 2.1 | Mistral Small 3.1 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 1.9% | 3.9% |
| Omni-MATH | — | 24.8% |
| LMArena Math | — | 1262 |
Knowledge Mistral Small 3.1 leads
Claude 2.1: 15.4 (#292), Mistral Small 3.1: 22.6 (#271)
| Benchmark | Claude 2.1 | Mistral Small 3.1 |
|---|---|---|
| GPQA Diamond | 33% | 41.9% |
| MMLU-Pro | — | 61% |
| GPQA (HELM) | — | 39.2% |
| LMArena Expert | — | 1257 |
| MMLU | 73.5% | — |
Multimodal Not comparable
Claude 2.1: —, Mistral Small 3.1: 33.2 (#99)
| Benchmark | Claude 2.1 | Mistral Small 3.1 |
|---|---|---|
| LMArena Vision | — | 1136 |
Multilingual Not comparable
Claude 2.1: —, Mistral Small 3.1: 41.2 (#209)
| Benchmark | Claude 2.1 | 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
Claude 2.1: —, Mistral Small 3.1: 63.6 (#230)
| Benchmark | Claude 2.1 | Mistral Small 3.1 |
|---|---|---|
| IFEval | — | 75% |
| LMArena Instruction Following | — | 1264 |
Long Context Not comparable
Claude 2.1: —, Mistral Small 3.1: 39.5 (#178)
| Benchmark | Claude 2.1 | Mistral Small 3.1 |
|---|---|---|
| LMArena Longer Query | — | 1299 |
Writing & Preference Not comparable
Claude 2.1: —, Mistral Small 3.1: 37.0 (#259)
| Benchmark | Claude 2.1 | Mistral Small 3.1 |
|---|---|---|
| LMArena Text | — | 1277 |
| LMArena Creative Writing | — | 1253 |
| EQ-Bench Creative Writing | — | 761 |
| WildBench | — | 78.8% |
| LMArena Multi-Turn | — | 1270 |
Frequently asked questions
Is Claude 2.1 better than Mistral Small 3.1?
Mistral Small 3.1 is the stronger model overall, scoring 31.7 to 25.2 on the Noometry Index.
Is Claude 2.1 or Mistral Small 3.1 better for coding?
Mistral Small 3.1 scores higher on coding benchmarks: 38.3 versus 26.2 in the Noometry coding category.
How many benchmarks do Claude 2.1 and Mistral Small 3.1 share?
3 benchmarks have published results for both models. Claude 2.1 has 7 scored results on Noometry and Mistral Small 3.1 has 28.