# MiMo-V2.6-Pro vs Step 3.5 Flash

> MiMo-V2.6-Pro is the stronger model overall, scoring 50.3 to 42.3 on the Noometry Index. Step 3.5 Flash costs 3.6× less per token, which makes it the better buy when MiMo-V2.6-Pro's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/mimo-v2-6-pro-vs-step-3-5-flash
- Last updated: 2026-10-11
- Shared benchmarks: 12

## Summary

- They share 12 benchmarks with published results for both. MiMo-V2.6-Pro scores higher in 8 categories and Step 3.5 Flash in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where MiMo-V2.6-Pro leads 43.1 to 22.2.
- Step 3.5 Flash is cheaper at $0.10 / $0.30 per million input/output tokens, against $0.43 / $0.87 for MiMo-V2.6-Pro.
- MiMo-V2.6-Pro accepts more context: 1.05M tokens versus 256K.

## Snapshot

| | MiMo-V2.6-Pro | Step 3.5 Flash |
|---|---|---|
| Provider | Xiaomi | StepFun |
| Noometry Index | 50.3 | 42.3 |
| Rank | 49 | 116 |
| Context | 1.05M | 256K |
| Input $/M | $0.43 | $0.10 |
| Output $/M | $0.87 | $0.30 |
| Weights | Open | Open |

## Coding

- MiMo-V2.6-Pro: 55.5 (#23)
- Step 3.5 Flash: 42.4 (#105)

| Benchmark | MiMo-V2.6-Pro | Step 3.5 Flash |
|---|---|---|
| LMArena Coding | 1534 | 1436 |
| LMArena WebDev | 1629 | — |
| SciCode | 60.9% | — |
| ALE-Bench | 1,158 | — |

## Agentic & Tool Use

- MiMo-V2.6-Pro: 37.5 (#35)
- Step 3.5 Flash: —

| Benchmark | MiMo-V2.6-Pro | Step 3.5 Flash |
|---|---|---|
| APEX-Agents | 59.5% | — |

## Reasoning

- MiMo-V2.6-Pro: 43.1 (#50)
- Step 3.5 Flash: 22.2 (#202)

| Benchmark | MiMo-V2.6-Pro | Step 3.5 Flash |
|---|---|---|
| LMArena Hard Prompts | 1512 | 1411 |
| NYT Connections (extended) | — | 28.4% |
| CritPt | 26.6% | — |

## Math

- MiMo-V2.6-Pro: 54.5 (#45)
- Step 3.5 Flash: 42.6 (#84)

| Benchmark | MiMo-V2.6-Pro | Step 3.5 Flash |
|---|---|---|
| LMArena Math | 1494 | 1408 |
| MathArena Final-Answer Competitions | — | 66.8% |
| ProofBench | 70% | — |

## Knowledge

- MiMo-V2.6-Pro: 43.5 (#92)
- Step 3.5 Flash: 39.6 (#132)

| Benchmark | MiMo-V2.6-Pro | Step 3.5 Flash |
|---|---|---|
| LMArena Expert | 1543 | 1421 |

## Multimodal

- MiMo-V2.6-Pro: 40.8 (#43)
- Step 3.5 Flash: —

| Benchmark | MiMo-V2.6-Pro | Step 3.5 Flash |
|---|---|---|
| LMArena Vision | 1264 | — |

## Multilingual

- MiMo-V2.6-Pro: 56.9 (#14)
- Step 3.5 Flash: 50.5 (#119)

| Benchmark | MiMo-V2.6-Pro | Step 3.5 Flash |
|---|---|---|
| LMArena Non-English | 1474 | 1385 |
| LMArena Chinese | 1529 | 1447 |
| LMArena Russian | 1480 | 1385 |
| LMArena French | — | 1421 |
| LMArena German | — | 1405 |
| LMArena Japanese | — | 1354 |
| LMArena Korean | — | 1352 |
| LMArena Spanish | — | 1419 |

## Instruction Following

- MiMo-V2.6-Pro: 78.2 (#12)
- Step 3.5 Flash: 73.1 (#124)

| Benchmark | MiMo-V2.6-Pro | Step 3.5 Flash |
|---|---|---|
| LMArena Instruction Following | 1493 | 1385 |

## Long Context

- MiMo-V2.6-Pro: 46.0 (#27)
- Step 3.5 Flash: 42.8 (#117)

| Benchmark | MiMo-V2.6-Pro | Step 3.5 Flash |
|---|---|---|
| LMArena Longer Query | 1501 | 1402 |

## Writing & Preference

- MiMo-V2.6-Pro: 66.8 (#33)
- Step 3.5 Flash: 58.8 (#113)

| Benchmark | MiMo-V2.6-Pro | Step 3.5 Flash |
|---|---|---|
| LMArena Text | 1492 | 1403 |
| LMArena Creative Writing | 1468 | 1357 |
| LMArena Multi-Turn | 1464 | 1405 |

## FAQ

### Is MiMo-V2.6-Pro better than Step 3.5 Flash?

MiMo-V2.6-Pro is the stronger model overall, scoring 50.3 to 42.3 on the Noometry Index. Step 3.5 Flash costs 3.6× less per token, which makes it the better buy when MiMo-V2.6-Pro's lead doesn't matter for your workload.

### Which is cheaper, MiMo-V2.6-Pro 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-V2.6-Pro lists at $0.43 and $0.87.

### Is MiMo-V2.6-Pro or Step 3.5 Flash better for coding?

MiMo-V2.6-Pro scores higher on coding benchmarks: 55.5 versus 42.4 in the Noometry coding category.

### Which has the bigger context window?

MiMo-V2.6-Pro does, with 1.05M tokens against 256K.

### How many benchmarks do MiMo-V2.6-Pro and Step 3.5 Flash share?

12 benchmarks have published results for both models. MiMo-V2.6-Pro has 19 scored results on Noometry and Step 3.5 Flash has 19.