# Claude 3.5 Sonnet vs Mistral Medium 3.5

> Mistral Medium 3.5 is the stronger model overall, scoring 39.6 to 34.4 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-3-5-sonnet-vs-mistral-medium-3-5
- Last updated: 2026-10-10
- Shared benchmarks: 18

## Summary

- They share 18 benchmarks with published results for both. Claude 3.5 Sonnet scores higher in 2 categories and Mistral Medium 3.5 in 7 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where Mistral Medium 3.5 leads 36.4 to 18.0.
- Mistral Medium 3.5 has downloadable open weights; the other is API-only.

## Snapshot

| | Claude 3.5 Sonnet | Mistral Medium 3.5 |
|---|---|---|
| Provider | Anthropic | Mistral AI |
| Noometry Index | 34.4 | 39.6 |
| Rank | 225 | 151 |
| Context | — | 262K |
| Input $/M | — | $1.50 |
| Output $/M | — | $7.50 |
| Weights | Proprietary | Open |

## Coding

- Claude 3.5 Sonnet: 39.5 (#145)
- Mistral Medium 3.5: 35.7 (#208)

| Benchmark | Claude 3.5 Sonnet | Mistral Medium 3.5 |
|---|---|---|
| LMArena Coding | 1343 | 1461 |
| Aider Polyglot | 51.6% | — |
| LMArena WebDev | — | 1263 |
| 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

- Claude 3.5 Sonnet: 32.1 (#61)
- Mistral Medium 3.5: —

| Benchmark | Claude 3.5 Sonnet | Mistral Medium 3.5 |
|---|---|---|
| TheAgentCompany | 24% | — |
| Cybench | 17.5% | — |
| BALROG | 32.6% | — |
| METR Time Horizons | 45.2% | — |

## Reasoning

- Claude 3.5 Sonnet: 22.5 (#176)
- Mistral Medium 3.5: 16.6 (#290)

| Benchmark | Claude 3.5 Sonnet | Mistral Medium 3.5 |
|---|---|---|
| LMArena Hard Prompts | 1305 | 1436 |
| Epoch Capabilities Index | 133.55 | 141.42 |
| SimpleBench | 41.4% | — |
| Kagi LLM Benchmark | — | 41.4% |
| NYT Connections (extended) | — | 12.9% |
| EnigmaEval | 0.9% | — |
| LiveBench Reasoning | 56.7% | — |
| DTBench | 67.8% | — |
| LiveBench Data Analysis | 55% | — |
| ForecastBench | 60.7 | — |
| LiveBench | 59% | — |

## Math

- Claude 3.5 Sonnet: 18.0 (#282)
- Mistral Medium 3.5: 36.4 (#113)

| Benchmark | Claude 3.5 Sonnet | Mistral Medium 3.5 |
|---|---|---|
| LMArena Math | 1306 | 1432 |
| OTIS Mock AIME 2024-2025 | 8.5% | — |
| Omni-MATH | 27.6% | — |
| 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: 28.5 (#236)
- Mistral Medium 3.5: 39.3 (#123)

| Benchmark | Claude 3.5 Sonnet | Mistral Medium 3.5 |
|---|---|---|
| LMArena Expert | 1264 | 1431 |
| GPQA Diamond | 55.3% | — |
| Humanity's Last Exam | 4.1% | — |
| MMLU-Pro | 77.7% | — |
| Confabulations | 19.9% | — |
| GPQA (HELM) | 56.5% | — |
| MMLU | 87.3% | — |

## Multimodal

- Claude 3.5 Sonnet: 26.0 (#115)
- Mistral Medium 3.5: 37.6 (#64)

| Benchmark | Claude 3.5 Sonnet | Mistral Medium 3.5 |
|---|---|---|
| LMArena Vision | 1125 | 1222 |
| Video-MME | 60% | — |
| GeoBench | 62% | — |
| VPCT | 33% | — |

## Multilingual

- Claude 3.5 Sonnet: 43.4 (#180)
- Mistral Medium 3.5: 52.1 (#93)

| Benchmark | Claude 3.5 Sonnet | Mistral Medium 3.5 |
|---|---|---|
| LMArena Non-English | 1283 | 1405 |
| LMArena Chinese | 1271 | 1443 |
| LMArena French | 1304 | 1448 |
| LMArena German | 1297 | 1453 |
| LMArena Korean | 1200 | 1387 |
| LMArena Russian | 1305 | 1396 |
| LMArena Spanish | 1289 | 1406 |
| LMArena Japanese | 1234 | — |

## Instruction Following

- Claude 3.5 Sonnet: 69.0 (#177)
- Mistral Medium 3.5: 74.7 (#87)

| Benchmark | Claude 3.5 Sonnet | Mistral Medium 3.5 |
|---|---|---|
| LMArena Instruction Following | 1297 | 1414 |
| LiveBench Instruction Following | 69.3% | — |
| IFEval | 85.5% | — |

## Long Context

- Claude 3.5 Sonnet: 39.9 (#162)
- Mistral Medium 3.5: 43.2 (#101)

| Benchmark | Claude 3.5 Sonnet | Mistral Medium 3.5 |
|---|---|---|
| LMArena Longer Query | 1311 | 1414 |

## Writing & Preference

- Claude 3.5 Sonnet: 53.0 (#159)
- Mistral Medium 3.5: 58.6 (#113)

| Benchmark | Claude 3.5 Sonnet | Mistral Medium 3.5 |
|---|---|---|
| LMArena Text | 1298 | 1421 |
| LMArena Creative Writing | 1292 | 1372 |
| LMArena Multi-Turn | 1326 | 1423 |
| Short-Story Creative Writing | 80.3% | — |
| EQ-Bench Creative Writing | 1451 | — |
| WildBench | 79.2% | — |
| EQ-Bench 4 | — | 993 |
| LiveBench Language | 53.8% | — |

## FAQ

### Is Claude 3.5 Sonnet better than Mistral Medium 3.5?

Mistral Medium 3.5 is the stronger model overall, scoring 39.6 to 34.4 on the Noometry Index.

### Is Claude 3.5 Sonnet or Mistral Medium 3.5 better for coding?

Claude 3.5 Sonnet scores higher on coding benchmarks: 39.5 versus 35.7 in the Noometry coding category.

### How many benchmarks do Claude 3.5 Sonnet and Mistral Medium 3.5 share?

18 benchmarks have published results for both models. Claude 3.5 Sonnet has 60 scored results on Noometry and Mistral Medium 3.5 has 22.