# MiMo-V2-Flash vs o3-pro

> o3-pro is the stronger model overall, scoring 42.9 to 41.3 on the Noometry Index. MiMo-V2-Flash costs 200× less per token, which makes it the better buy when o3-pro's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/mimo-v2-flash-vs-o3-pro
- Last updated: 2026-10-11
- Shared benchmarks: 0

## Summary

- The widest gap is in long context, where o3-pro leads 72.2 to 43.0.
- MiMo-V2-Flash is cheaper at $0.14 / $0.28 per million input/output tokens, against $20 / $80 for o3-pro.
- MiMo-V2-Flash accepts more context: 262K tokens versus 200K.
- MiMo-V2-Flash has downloadable open weights; the other is API-only.

## Snapshot

| | MiMo-V2-Flash | o3-pro |
|---|---|---|
| Provider | Xiaomi | OpenAI |
| Noometry Index | 41.3 | 42.9 |
| Rank | 138 | 105 |
| Context | 262K | 200K |
| Input $/M | $0.14 | $20 |
| Output $/M | $0.28 | $80 |
| Weights | Open | Proprietary |

## Coding

- MiMo-V2-Flash: 36.1 (#211)
- o3-pro: 55.5 (#24)

| Benchmark | MiMo-V2-Flash | o3-pro |
|---|---|---|
| Aider Polyglot | — | 84.9% |
| LMArena WebDev | 1330 | — |
| SciCode | 25.9% | — |
| WeirdML | — | 58.2% |
| LMArena Coding | 1443 | — |
| ALE-Bench | 737.95 | — |

## Reasoning

- MiMo-V2-Flash: 24.9 (#157)
- o3-pro: 23.8 (#171)

| Benchmark | MiMo-V2-Flash | o3-pro |
|---|---|---|
| ARC-AGI-2 | — | 4.9% |
| Kagi LLM Benchmark | — | 72.1% |
| ARC-AGI-1 | — | 59.3% |
| CritPt | 0% | — |
| LMArena Hard Prompts | 1420 | — |
| DTBench | — | 86.9% |
| LMCA | — | 38.5% |
| Epoch Capabilities Index | — | 147.42 |

## Math

- MiMo-V2-Flash: 38.3 (#139)
- o3-pro: —

| Benchmark | MiMo-V2-Flash | o3-pro |
|---|---|---|
| LMArena Math | 1396 | — |

## Knowledge

- MiMo-V2-Flash: 39.7 (#131)
- o3-pro: 29.5 (#238)

| Benchmark | MiMo-V2-Flash | o3-pro |
|---|---|---|
| Confabulations | — | 14.2% |
| Vectara Hallucination Rate | — | 23.3% |
| LMArena Expert | 1425 | — |

## Multilingual

- MiMo-V2-Flash: 51.0 (#113)
- o3-pro: —

| Benchmark | MiMo-V2-Flash | o3-pro |
|---|---|---|
| LMArena Non-English | 1392 | — |
| LMArena Chinese | 1462 | — |
| LMArena French | 1429 | — |
| LMArena German | 1395 | — |
| LMArena Japanese | 1325 | — |
| LMArena Korean | 1358 | — |
| LMArena Russian | 1387 | — |
| LMArena Spanish | 1420 | — |

## Instruction Following

- MiMo-V2-Flash: 73.5 (#120)
- o3-pro: —

| Benchmark | MiMo-V2-Flash | o3-pro |
|---|---|---|
| LMArena Instruction Following | 1392 | — |

## Long Context

- MiMo-V2-Flash: 43.0 (#110)
- o3-pro: 72.2 (#1)

| Benchmark | MiMo-V2-Flash | o3-pro |
|---|---|---|
| Fiction.LiveBench | — | 97.2% |
| LMArena Longer Query | 1409 | — |

## Writing & Preference

- MiMo-V2-Flash: 59.7 (#106)
- o3-pro: 57.1 (#133)

| Benchmark | MiMo-V2-Flash | o3-pro |
|---|---|---|
| LMArena Text | 1411 | — |
| LMArena Creative Writing | 1375 | — |
| Short-Story Creative Writing | — | 84.4% |
| LMArena Multi-Turn | 1404 | — |

## FAQ

### Is MiMo-V2-Flash better than o3-pro?

o3-pro is the stronger model overall, scoring 42.9 to 41.3 on the Noometry Index. MiMo-V2-Flash costs 200× less per token, which makes it the better buy when o3-pro's lead doesn't matter for your workload.

### Which is cheaper, MiMo-V2-Flash or o3-pro?

MiMo-V2-Flash is cheaper. It lists at $0.14 per million input tokens and $0.28 per million output tokens; o3-pro lists at $20 and $80.

### Is MiMo-V2-Flash or o3-pro better for coding?

o3-pro scores higher on coding benchmarks: 55.5 versus 36.1 in the Noometry coding category.

### Which has the bigger context window?

MiMo-V2-Flash does, with 262K tokens against 200K.

### How many benchmarks do MiMo-V2-Flash and o3-pro share?

0 benchmarks have published results for both models. MiMo-V2-Flash has 21 scored results on Noometry and o3-pro has 12.