# MiMo-V2.6-Pro vs o3-pro

> MiMo-V2.6-Pro is the stronger model overall, scoring 50.3 to 42.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/mimo-v2-6-pro-vs-o3-pro
- Last updated: 2026-10-12
- Shared benchmarks: 0

## Summary

- The widest gap is in long context, where o3-pro leads 72.2 to 46.0.
- MiMo-V2.6-Pro is cheaper at $0.43 / $0.87 per million input/output tokens, against $20 / $80 for o3-pro.
- MiMo-V2.6-Pro accepts more context: 1.05M tokens versus 200K.
- MiMo-V2.6-Pro has downloadable open weights; the other is API-only.

## Snapshot

| | MiMo-V2.6-Pro | o3-pro |
|---|---|---|
| Provider | Xiaomi | OpenAI |
| Noometry Index | 50.3 | 42.9 |
| Rank | 49 | 105 |
| Context | 1.05M | 200K |
| Input $/M | $0.43 | $20 |
| Output $/M | $0.87 | $80 |
| Weights | Open | Proprietary |

## Coding

- MiMo-V2.6-Pro: 55.5 (#23)
- o3-pro: 55.5 (#24)

| Benchmark | MiMo-V2.6-Pro | o3-pro |
|---|---|---|
| Aider Polyglot | — | 84.9% |
| LMArena WebDev | 1629 | — |
| SciCode | 60.9% | — |
| WeirdML | — | 58.2% |
| LMArena Coding | 1534 | — |
| ALE-Bench | 1,158 | — |

## Agentic & Tool Use

- MiMo-V2.6-Pro: 37.5 (#35)
- o3-pro: —

| Benchmark | MiMo-V2.6-Pro | o3-pro |
|---|---|---|
| APEX-Agents | 59.5% | — |

## Reasoning

- MiMo-V2.6-Pro: 43.1 (#50)
- o3-pro: 23.8 (#171)

| Benchmark | MiMo-V2.6-Pro | o3-pro |
|---|---|---|
| ARC-AGI-2 | — | 4.9% |
| Kagi LLM Benchmark | — | 72.1% |
| ARC-AGI-1 | — | 59.3% |
| CritPt | 26.6% | — |
| LMArena Hard Prompts | 1512 | — |
| DTBench | — | 86.9% |
| LMCA | — | 38.5% |
| Epoch Capabilities Index | — | 147.42 |

## Math

- MiMo-V2.6-Pro: 54.5 (#45)
- o3-pro: —

| Benchmark | MiMo-V2.6-Pro | o3-pro |
|---|---|---|
| ProofBench | 70% | — |
| LMArena Math | 1494 | — |

## Knowledge

- MiMo-V2.6-Pro: 43.5 (#92)
- o3-pro: 29.5 (#238)

| Benchmark | MiMo-V2.6-Pro | o3-pro |
|---|---|---|
| Confabulations | — | 14.2% |
| Vectara Hallucination Rate | — | 23.3% |
| LMArena Expert | 1543 | — |

## Multimodal

- MiMo-V2.6-Pro: 40.8 (#43)
- o3-pro: —

| Benchmark | MiMo-V2.6-Pro | o3-pro |
|---|---|---|
| LMArena Vision | 1264 | — |

## Multilingual

- MiMo-V2.6-Pro: 56.9 (#14)
- o3-pro: —

| Benchmark | MiMo-V2.6-Pro | o3-pro |
|---|---|---|
| LMArena Non-English | 1474 | — |
| LMArena Chinese | 1529 | — |
| LMArena Russian | 1480 | — |

## Instruction Following

- MiMo-V2.6-Pro: 78.2 (#12)
- o3-pro: —

| Benchmark | MiMo-V2.6-Pro | o3-pro |
|---|---|---|
| LMArena Instruction Following | 1493 | — |

## Long Context

- MiMo-V2.6-Pro: 46.0 (#27)
- o3-pro: 72.2 (#1)

| Benchmark | MiMo-V2.6-Pro | o3-pro |
|---|---|---|
| Fiction.LiveBench | — | 97.2% |
| LMArena Longer Query | 1501 | — |

## Writing & Preference

- MiMo-V2.6-Pro: 66.8 (#33)
- o3-pro: 57.1 (#133)

| Benchmark | MiMo-V2.6-Pro | o3-pro |
|---|---|---|
| LMArena Text | 1492 | — |
| LMArena Creative Writing | 1468 | — |
| Short-Story Creative Writing | — | 84.4% |
| LMArena Multi-Turn | 1464 | — |

## FAQ

### Is MiMo-V2.6-Pro better than o3-pro?

MiMo-V2.6-Pro is the stronger model overall, scoring 50.3 to 42.9 on the Noometry Index.

### Which is cheaper, MiMo-V2.6-Pro or o3-pro?

MiMo-V2.6-Pro is cheaper. It lists at $0.43 per million input tokens and $0.87 per million output tokens; o3-pro lists at $20 and $80.

### Is MiMo-V2.6-Pro or o3-pro better for coding?

They score almost the same on coding (55.5 vs 55.5); test both on your own repository before choosing.

### Which has the bigger context window?

MiMo-V2.6-Pro does, with 1.05M tokens against 200K.

### How many benchmarks do MiMo-V2.6-Pro and o3-pro share?

0 benchmarks have published results for both models. MiMo-V2.6-Pro has 19 scored results on Noometry and o3-pro has 12.