# MiMo-V2-Omni vs Mistral Small 3.1

> MiMo-V2-Omni is the stronger model overall, scoring 43.6 to 31.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/mimo-v2-omni-vs-mistral-small-3-1
- Last updated: 2026-10-12
- Shared benchmarks: 18

## Summary

- They share 18 benchmarks with published results for both. MiMo-V2-Omni scores higher in 9 categories and Mistral Small 3.1 in 0 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where MiMo-V2-Omni leads 39.1 to 14.7.
- MiMo-V2-Omni is cheaper at $0.14 / $0.28 per million input/output tokens, against $0.35 / $0.56 for Mistral Small 3.1.
- MiMo-V2-Omni accepts more context: 262K tokens versus 128K.
- Mistral Small 3.1 has downloadable open weights; the other is API-only.

## Snapshot

| | MiMo-V2-Omni | Mistral Small 3.1 |
|---|---|---|
| Provider | Xiaomi | Mistral AI |
| Noometry Index | 43.6 | 31.7 |
| Rank | 88 | 269 |
| Context | 262K | 128K |
| Input $/M | $0.14 | $0.35 |
| Output $/M | $0.28 | $0.56 |
| Weights | Proprietary | Open |

## Coding

- MiMo-V2-Omni: 43.3 (#89)
- Mistral Small 3.1: 38.3 (#179)

| Benchmark | MiMo-V2-Omni | Mistral Small 3.1 |
|---|---|---|
| LMArena Coding | 1466 | 1309 |

## Reasoning

- MiMo-V2-Omni: 29.7 (#88)
- Mistral Small 3.1: 19.7 (#254)

| Benchmark | MiMo-V2-Omni | Mistral Small 3.1 |
|---|---|---|
| LMArena Hard Prompts | 1445 | 1278 |
| Chess Puzzles | — | 1% |
| Epoch Capabilities Index | — | 127.48 |

## Math

- MiMo-V2-Omni: 39.1 (#115)
- Mistral Small 3.1: 14.7 (#301)

| Benchmark | MiMo-V2-Omni | Mistral Small 3.1 |
|---|---|---|
| LMArena Math | 1430 | 1262 |
| OTIS Mock AIME 2024-2025 | — | 3.9% |
| Omni-MATH | — | 24.8% |

## Knowledge

- MiMo-V2-Omni: 40.5 (#118)
- Mistral Small 3.1: 22.6 (#271)

| Benchmark | MiMo-V2-Omni | Mistral Small 3.1 |
|---|---|---|
| LMArena Expert | 1449 | 1257 |
| GPQA Diamond | — | 41.9% |
| MMLU-Pro | — | 61% |
| GPQA (HELM) | — | 39.2% |

## Multimodal

- MiMo-V2-Omni: 38.6 (#63)
- Mistral Small 3.1: 33.2 (#99)

| Benchmark | MiMo-V2-Omni | Mistral Small 3.1 |
|---|---|---|
| LMArena Vision | 1228 | 1136 |

## Multilingual

- MiMo-V2-Omni: 51.8 (#102)
- Mistral Small 3.1: 41.2 (#209)

| Benchmark | MiMo-V2-Omni | Mistral Small 3.1 |
|---|---|---|
| LMArena Non-English | 1404 | 1255 |
| LMArena Chinese | 1465 | 1253 |
| LMArena French | 1447 | 1273 |
| LMArena German | 1399 | 1266 |
| LMArena Japanese | 1317 | 1208 |
| LMArena Korean | 1355 | 1206 |
| LMArena Russian | 1412 | 1263 |
| LMArena Spanish | 1434 | 1283 |

## Instruction Following

- MiMo-V2-Omni: 75.2 (#66)
- Mistral Small 3.1: 63.6 (#230)

| Benchmark | MiMo-V2-Omni | Mistral Small 3.1 |
|---|---|---|
| LMArena Instruction Following | 1428 | 1264 |
| IFEval | — | 75% |

## Long Context

- MiMo-V2-Omni: 44.1 (#76)
- Mistral Small 3.1: 39.5 (#178)

| Benchmark | MiMo-V2-Omni | Mistral Small 3.1 |
|---|---|---|
| LMArena Longer Query | 1442 | 1299 |

## Writing & Preference

- MiMo-V2-Omni: 61.4 (#87)
- Mistral Small 3.1: 37.0 (#259)

| Benchmark | MiMo-V2-Omni | Mistral Small 3.1 |
|---|---|---|
| LMArena Text | 1423 | 1277 |
| LMArena Creative Writing | 1392 | 1253 |
| LMArena Multi-Turn | 1445 | 1270 |
| EQ-Bench Creative Writing | — | 761 |
| WildBench | — | 78.8% |

## FAQ

### Is MiMo-V2-Omni better than Mistral Small 3.1?

MiMo-V2-Omni is the stronger model overall, scoring 43.6 to 31.7 on the Noometry Index.

### Which is cheaper, MiMo-V2-Omni or Mistral Small 3.1?

MiMo-V2-Omni is cheaper. It lists at $0.14 per million input tokens and $0.28 per million output tokens; Mistral Small 3.1 lists at $0.35 and $0.56.

### Is MiMo-V2-Omni or Mistral Small 3.1 better for coding?

MiMo-V2-Omni scores higher on coding benchmarks: 43.3 versus 38.3 in the Noometry coding category.

### Which has the bigger context window?

MiMo-V2-Omni does, with 262K tokens against 128K.

### How many benchmarks do MiMo-V2-Omni and Mistral Small 3.1 share?

18 benchmarks have published results for both models. MiMo-V2-Omni has 18 scored results on Noometry and Mistral Small 3.1 has 28.