# MiMo-V2-Omni vs Step 3.5 Flash

> MiMo-V2-Omni is the stronger model overall, scoring 43.6 to 42.3 on the Noometry Index.

- Canonical page: https://noometry.com/compare/mimo-v2-omni-vs-step-3-5-flash
- Last updated: 2026-10-10
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. MiMo-V2-Omni scores higher in 7 categories and Step 3.5 Flash in 1 category; 6 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where MiMo-V2-Omni leads 29.7 to 22.2.
- Step 3.5 Flash is cheaper at $0.10 / $0.30 per million input/output tokens, against $0.14 / $0.28 for MiMo-V2-Omni.
- MiMo-V2-Omni accepts more context: 262K tokens versus 256K.
- Step 3.5 Flash has downloadable open weights; the other is API-only.

## Snapshot

| | MiMo-V2-Omni | Step 3.5 Flash |
|---|---|---|
| Provider | Xiaomi | StepFun |
| Noometry Index | 43.6 | 42.3 |
| Rank | 88 | 116 |
| Context | 262K | 256K |
| Input $/M | $0.14 | $0.10 |
| Output $/M | $0.28 | $0.30 |
| Weights | Proprietary | Open |

## Coding

- MiMo-V2-Omni: 43.3 (#89)
- Step 3.5 Flash: 42.4 (#105)

| Benchmark | MiMo-V2-Omni | Step 3.5 Flash |
|---|---|---|
| LMArena Coding | 1466 | 1436 |

## Reasoning

- MiMo-V2-Omni: 29.7 (#88)
- Step 3.5 Flash: 22.2 (#202)

| Benchmark | MiMo-V2-Omni | Step 3.5 Flash |
|---|---|---|
| LMArena Hard Prompts | 1445 | 1411 |
| NYT Connections (extended) | — | 28.4% |

## Math

- MiMo-V2-Omni: 39.1 (#115)
- Step 3.5 Flash: 42.6 (#84)

| Benchmark | MiMo-V2-Omni | Step 3.5 Flash |
|---|---|---|
| LMArena Math | 1430 | 1408 |
| MathArena Final-Answer Competitions | — | 66.8% |

## Knowledge

- MiMo-V2-Omni: 40.5 (#118)
- Step 3.5 Flash: 39.6 (#132)

| Benchmark | MiMo-V2-Omni | Step 3.5 Flash |
|---|---|---|
| LMArena Expert | 1449 | 1421 |

## Multimodal

- MiMo-V2-Omni: 38.6 (#63)
- Step 3.5 Flash: —

| Benchmark | MiMo-V2-Omni | Step 3.5 Flash |
|---|---|---|
| LMArena Vision | 1228 | — |

## Multilingual

- MiMo-V2-Omni: 51.8 (#102)
- Step 3.5 Flash: 50.5 (#119)

| Benchmark | MiMo-V2-Omni | Step 3.5 Flash |
|---|---|---|
| LMArena Non-English | 1404 | 1385 |
| LMArena Chinese | 1465 | 1447 |
| LMArena French | 1447 | 1421 |
| LMArena German | 1399 | 1405 |
| LMArena Japanese | 1317 | 1354 |
| LMArena Korean | 1355 | 1352 |
| LMArena Russian | 1412 | 1385 |
| LMArena Spanish | 1434 | 1419 |

## Instruction Following

- MiMo-V2-Omni: 75.2 (#66)
- Step 3.5 Flash: 73.1 (#124)

| Benchmark | MiMo-V2-Omni | Step 3.5 Flash |
|---|---|---|
| LMArena Instruction Following | 1428 | 1385 |

## Long Context

- MiMo-V2-Omni: 44.1 (#76)
- Step 3.5 Flash: 42.8 (#117)

| Benchmark | MiMo-V2-Omni | Step 3.5 Flash |
|---|---|---|
| LMArena Longer Query | 1442 | 1402 |

## Writing & Preference

- MiMo-V2-Omni: 61.4 (#87)
- Step 3.5 Flash: 58.8 (#113)

| Benchmark | MiMo-V2-Omni | Step 3.5 Flash |
|---|---|---|
| LMArena Text | 1423 | 1403 |
| LMArena Creative Writing | 1392 | 1357 |
| LMArena Multi-Turn | 1445 | 1405 |

## FAQ

### Is MiMo-V2-Omni better than Step 3.5 Flash?

MiMo-V2-Omni is the stronger model overall, scoring 43.6 to 42.3 on the Noometry Index.

### Which is cheaper, MiMo-V2-Omni or Step 3.5 Flash?

Step 3.5 Flash is cheaper. It lists at $0.10 per million input tokens and $0.30 per million output tokens; MiMo-V2-Omni lists at $0.14 and $0.28.

### Is MiMo-V2-Omni or Step 3.5 Flash better for coding?

They score almost the same on coding (43.3 vs 42.4); test both on your own repository before choosing.

### Which has the bigger context window?

MiMo-V2-Omni does, with 262K tokens against 256K.

### How many benchmarks do MiMo-V2-Omni and Step 3.5 Flash share?

17 benchmarks have published results for both models. MiMo-V2-Omni has 18 scored results on Noometry and Step 3.5 Flash has 19.