Model comparison
Claude 3.5 Sonnet vs Mistral Small 3.1
Claude 3.5 Sonnet is the stronger model overall, scoring 34.4 to 31.4 on the Noometry Index.
Last verified . 27 shared benchmarks.
Mistral AISummary
- They share 27 benchmarks with published results for both. Claude 3.5 Sonnet scores higher in 8 categories and Mistral Small 3.1 in 1 category; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Claude 3.5 Sonnet leads 53.0 to 37.2.
- The biggest single-benchmark swing is GPQA (HELM): 56.5% for Claude 3.5 Sonnet and 39.2% for Mistral Small 3.1.
- Mistral Small 3.1 has downloadable open weights; the other is API-only.
Side by side
| Claude 3.5 Sonnet | Mistral Small 3.1 | |
|---|---|---|
| Provider | Anthropic | Mistral AI |
| Noometry Index | 34.4 | 31.4 |
| Released | 2024-06-20 | 2025-03-17 |
| Weights | Proprietary | Open |
| Context window | — | 128K |
| Max output | — | 102K |
| Input $ / M tokens | — | $0.35 |
| Output $ / M tokens | — | $0.56 |
| Results tracked | 60 | 28 |
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Category by category
Coding Claude 3.5 Sonnet leads
Claude 3.5 Sonnet: 39.5 (#145), Mistral Small 3.1: 37.7 (#175)
| Benchmark | Claude 3.5 Sonnet | Mistral Small 3.1 |
|---|---|---|
| LMArena Coding | 1343 | 1309 |
| Aider Polyglot | 51.6% | — |
| GSO | 4.6% | — |
| WeirdML | 40% | — |
| BigCodeBench Instruct | 46.8% | — |
| LiveBench Coding | 67.1% | — |
| BigCodeBench Complete | 58.6% | — |
| CadEval | 48% | — |
| HumanEval+ | 81.7% | — |
| MBPP+ | 74.3% | — |
Agentic & Tool Use Not comparable
Claude 3.5 Sonnet: 32.1 (#61), Mistral Small 3.1: —
| Benchmark | Claude 3.5 Sonnet | Mistral Small 3.1 |
|---|---|---|
| TheAgentCompany | 24% | — |
| Cybench | 17.5% | — |
| BALROG | 32.6% | — |
| METR Time Horizons | 45.2% | — |
Reasoning Claude 3.5 Sonnet leads
Claude 3.5 Sonnet: 22.5 (#176), Mistral Small 3.1: 18.9 (#249)
| Benchmark | Claude 3.5 Sonnet | Mistral Small 3.1 |
|---|---|---|
| LMArena Hard Prompts | 1305 | 1278 |
| Epoch Capabilities Index | 133.55 | 127.48 |
| SimpleBench | 41.4% | — |
| Chess Puzzles | — | 1% |
| EnigmaEval | 0.9% | — |
| LiveBench Reasoning | 56.7% | — |
| DTBench | 67.8% | — |
| LiveBench Data Analysis | 55% | — |
| ForecastBench | 60.7 | — |
| LiveBench | 59% | — |
Math Claude 3.5 Sonnet leads
Claude 3.5 Sonnet: 18.0 (#282), Mistral Small 3.1: 13.7 (#295)
| Benchmark | Claude 3.5 Sonnet | Mistral Small 3.1 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 8.5% | 3.9% |
| Omni-MATH | 27.6% | 24.8% |
| LMArena Math | 1306 | 1261 |
| LiveBench Math | 52.3% | — |
| MATH Level 5 | 56.9% | — |
| FrontierMath (Feb 2025 set) | 2.1% | — |
| FrontierMath Tier 4 (v1) | 0% | — |
Knowledge Claude 3.5 Sonnet leads
Claude 3.5 Sonnet: 28.5 (#236), Mistral Small 3.1: 22.6 (#266)
| Benchmark | Claude 3.5 Sonnet | Mistral Small 3.1 |
|---|---|---|
| GPQA Diamond | 55.3% | 41.9% |
| MMLU-Pro | 77.7% | 61% |
| GPQA (HELM) | 56.5% | 39.2% |
| LMArena Expert | 1264 | 1258 |
| Humanity's Last Exam | 4.1% | — |
| Confabulations | 19.9% | — |
| MMLU | 87.3% | — |
Multimodal Mistral Small 3.1 leads
Claude 3.5 Sonnet: 26.0 (#115), Mistral Small 3.1: 32.6 (#93)
| Benchmark | Claude 3.5 Sonnet | Mistral Small 3.1 |
|---|---|---|
| LMArena Vision | 1125 | 1136 |
| Video-MME | 60% | — |
| GeoBench | 62% | — |
| VPCT | 33% | — |
Multilingual Claude 3.5 Sonnet leads
Claude 3.5 Sonnet: 43.4 (#180), Mistral Small 3.1: 41.4 (#204)
| Benchmark | Claude 3.5 Sonnet | Mistral Small 3.1 |
|---|---|---|
| LMArena Non-English | 1283 | 1255 |
| LMArena Chinese | 1271 | 1254 |
| LMArena French | 1304 | 1270 |
| LMArena German | 1297 | 1266 |
| LMArena Japanese | 1234 | 1210 |
| LMArena Korean | 1200 | 1206 |
| LMArena Russian | 1305 | 1263 |
| LMArena Spanish | 1289 | 1283 |
Instruction Following Claude 3.5 Sonnet leads
Claude 3.5 Sonnet: 69.0 (#177), Mistral Small 3.1: 63.8 (#225)
| Benchmark | Claude 3.5 Sonnet | Mistral Small 3.1 |
|---|---|---|
| IFEval | 85.5% | 75% |
| LMArena Instruction Following | 1297 | 1264 |
| LiveBench Instruction Following | 69.3% | — |
Long Context Too close to call
Claude 3.5 Sonnet: 39.9 (#162), Mistral Small 3.1: 39.5 (#172)
| Benchmark | Claude 3.5 Sonnet | Mistral Small 3.1 |
|---|---|---|
| LMArena Longer Query | 1311 | 1300 |
Writing & Preference Claude 3.5 Sonnet leads
Claude 3.5 Sonnet: 53.0 (#159), Mistral Small 3.1: 37.2 (#254)
| Benchmark | Claude 3.5 Sonnet | Mistral Small 3.1 |
|---|---|---|
| LMArena Text | 1298 | 1278 |
| LMArena Creative Writing | 1292 | 1253 |
| EQ-Bench Creative Writing | 1451 | 761 |
| WildBench | 79.2% | 78.8% |
| LMArena Multi-Turn | 1326 | 1270 |
| Short-Story Creative Writing | 80.3% | — |
| LiveBench Language | 53.8% | — |
Frequently asked questions
Is Claude 3.5 Sonnet better than Mistral Small 3.1?
Claude 3.5 Sonnet is the stronger model overall, scoring 34.4 to 31.4 on the Noometry Index.
Is Claude 3.5 Sonnet or Mistral Small 3.1 better for coding?
Claude 3.5 Sonnet scores higher on coding benchmarks: 39.5 versus 37.7 in the Noometry coding category.
How many benchmarks do Claude 3.5 Sonnet and Mistral Small 3.1 share?
27 benchmarks have published results for both models. Claude 3.5 Sonnet has 60 scored results on Noometry and Mistral Small 3.1 has 28.