# MiMo-V2-Pro vs Step 5 Preview

> Step 5 Preview is the stronger model overall, scoring 47.9 to 43.0 on the Noometry Index. MiMo-V2-Pro costs 2.6× less per token, which makes it the better buy when Step 5 Preview's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/mimo-v2-pro-vs-step-5-preview
- Last updated: 2026-10-10
- Shared benchmarks: 14

## Summary

- They share 14 benchmarks with published results for both. MiMo-V2-Pro scores higher in 3 categories and Step 5 Preview in 5 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Step 5 Preview leads 40.0 to 22.1.
- MiMo-V2-Pro is cheaper at $0.43 / $0.87 per million input/output tokens, against $1 / $2.70 for Step 5 Preview.
- MiMo-V2-Pro accepts more context: 1.05M tokens versus 1.02M.

## Snapshot

| | MiMo-V2-Pro | Step 5 Preview |
|---|---|---|
| Provider | Xiaomi | StepFun |
| Noometry Index | 43.0 | 47.9 |
| Rank | 103 | 58 |
| Context | 1.05M | 1.02M |
| Input $/M | $0.43 | $1 |
| Output $/M | $0.87 | $2.70 |
| Weights | Proprietary | Proprietary |

## Coding

- MiMo-V2-Pro: 43.8 (#83)
- Step 5 Preview: 51.8 (#36)

| Benchmark | MiMo-V2-Pro | Step 5 Preview |
|---|---|---|
| LMArena WebDev | 1433 | 1564 |
| LMArena Coding | 1476 | 1480 |
| SciCode | — | 58.9% |
| ALE-Bench | 785.17 | — |

## Reasoning

- MiMo-V2-Pro: 22.1 (#206)
- Step 5 Preview: 40.0 (#57)

| Benchmark | MiMo-V2-Pro | Step 5 Preview |
|---|---|---|
| LMArena Hard Prompts | 1457 | 1465 |
| NYT Connections (extended) | 25.8% | — |
| CritPt | — | 20.9% |
| Thematic Generalization | 45.9% | — |

## Math

- MiMo-V2-Pro: 39.5 (#102)
- Step 5 Preview: 46.1 (#72)

| Benchmark | MiMo-V2-Pro | Step 5 Preview |
|---|---|---|
| LMArena Math | 1447 | 1470 |
| ProofBench | — | 42% |

## Knowledge

- MiMo-V2-Pro: 41.4 (#111)
- Step 5 Preview: 41.2 (#112)

| Benchmark | MiMo-V2-Pro | Step 5 Preview |
|---|---|---|
| LMArena Expert | 1478 | 1470 |

## Multimodal

- MiMo-V2-Pro: —
- Step 5 Preview: 41.0 (#41)

| Benchmark | MiMo-V2-Pro | Step 5 Preview |
|---|---|---|
| LMArena Vision | — | 1267 |

## Multilingual

- MiMo-V2-Pro: 52.7 (#81)
- Step 5 Preview: 53.8 (#54)

| Benchmark | MiMo-V2-Pro | Step 5 Preview |
|---|---|---|
| LMArena Non-English | 1416 | 1432 |
| LMArena Chinese | 1456 | 1519 |
| LMArena Russian | 1427 | 1436 |
| LMArena Spanish | 1457 | 1439 |
| LMArena French | 1469 | — |
| LMArena German | 1417 | — |
| LMArena Japanese | 1366 | — |
| LMArena Korean | 1400 | — |

## Instruction Following

- MiMo-V2-Pro: 76.0 (#49)
- Step 5 Preview: 76.0 (#50)

| Benchmark | MiMo-V2-Pro | Step 5 Preview |
|---|---|---|
| LMArena Instruction Following | 1445 | 1444 |

## Long Context

- MiMo-V2-Pro: 41.5 (#138)
- Step 5 Preview: 44.5 (#64)

| Benchmark | MiMo-V2-Pro | Step 5 Preview |
|---|---|---|
| LMArena Longer Query | 1455 | 1455 |
| CL-bench | 15.7% | — |
| CL-bench Life | 6.9% | — |

## Writing & Preference

- MiMo-V2-Pro: 62.8 (#70)
- Step 5 Preview: 62.8 (#71)

| Benchmark | MiMo-V2-Pro | Step 5 Preview |
|---|---|---|
| LMArena Text | 1436 | 1442 |
| LMArena Creative Writing | 1415 | 1410 |
| LMArena Multi-Turn | 1456 | 1447 |

## FAQ

### Is MiMo-V2-Pro better than Step 5 Preview?

Step 5 Preview is the stronger model overall, scoring 47.9 to 43.0 on the Noometry Index. MiMo-V2-Pro costs 2.6× less per token, which makes it the better buy when Step 5 Preview's lead doesn't matter for your workload.

### Which is cheaper, MiMo-V2-Pro or Step 5 Preview?

MiMo-V2-Pro is cheaper. It lists at $0.43 per million input tokens and $0.87 per million output tokens; Step 5 Preview lists at $1 and $2.70.

### Is MiMo-V2-Pro or Step 5 Preview better for coding?

Step 5 Preview scores higher on coding benchmarks: 51.8 versus 43.8 in the Noometry coding category.

### Which has the bigger context window?

MiMo-V2-Pro does, with 1.05M tokens against 1.02M.

### How many benchmarks do MiMo-V2-Pro and Step 5 Preview share?

14 benchmarks have published results for both models. MiMo-V2-Pro has 23 scored results on Noometry and Step 5 Preview has 18.