Model comparison
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.
Last verified . 0 shared benchmarks.
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.
Side by side
| MiMo-V2-Flash | o3-pro | |
|---|---|---|
| Provider | Xiaomi | OpenAI |
| Noometry Index | 41.3 | 42.9 |
| Released | 2025-12-16 | 2025-06-10 |
| Weights | Open | Proprietary |
| Context window | 262K | 200K |
| Max output | 66K | 100K |
| Input $ / M tokens | $0.14 | $20 |
| Output $ / M tokens | $0.28 | $80 |
| Results tracked | 21 | 12 |
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Category by category
Coding o3-pro leads
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 leads
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 Not comparable
MiMo-V2-Flash: 38.3 (#139), o3-pro: —
| Benchmark | MiMo-V2-Flash | o3-pro |
|---|---|---|
| LMArena Math | 1396 | — |
Knowledge MiMo-V2-Flash leads
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 Not comparable
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 Not comparable
MiMo-V2-Flash: 73.5 (#120), o3-pro: —
| Benchmark | MiMo-V2-Flash | o3-pro |
|---|---|---|
| LMArena Instruction Following | 1392 | — |
Long Context o3-pro leads
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 leads
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 | — |
Frequently asked questions
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.