Model comparison
MiMo-V2.6-Flash vs o3-pro
MiMo-V2.6-Flash is the stronger model overall, scoring 48.5 to 42.9 on the Noometry Index.
Last verified . 0 shared benchmarks.
Summary
- The widest gap is in long context, where o3-pro leads 72.2 to 44.8.
- MiMo-V2.6-Flash is cheaper at $0.14 / $0.28 per million input/output tokens, against $20 / $80 for o3-pro.
- MiMo-V2.6-Flash accepts more context: 1.05M tokens versus 200K.
- MiMo-V2.6-Flash has downloadable open weights; the other is API-only.
Side by side
| MiMo-V2.6-Flash | o3-pro | |
|---|---|---|
| Provider | Xiaomi | OpenAI |
| Noometry Index | 48.5 | 42.9 |
| Released | 2026-09-21 | 2025-06-10 |
| Weights | Open | Proprietary |
| Context window | 1.05M | 200K |
| Max output | 131K | 100K |
| Input $ / M tokens | $0.14 | $20 |
| Output $ / M tokens | $0.28 | $80 |
| Results tracked | 19 | 12 |
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Category by category
Coding o3-pro leads
MiMo-V2.6-Flash: 53.4 (#30), o3-pro: 55.5 (#24)
| Benchmark | MiMo-V2.6-Flash | o3-pro |
|---|---|---|
| Aider Polyglot | — | 84.9% |
| LMArena WebDev | 1637 | — |
| SciCode | 51.3% | — |
| WeirdML | — | 58.2% |
| LMArena Coding | 1504 | — |
Reasoning MiMo-V2.6-Flash leads
MiMo-V2.6-Flash: 36.5 (#66), o3-pro: 23.8 (#171)
| Benchmark | MiMo-V2.6-Flash | o3-pro |
|---|---|---|
| ARC-AGI-2 | — | 4.9% |
| Kagi LLM Benchmark | — | 72.1% |
| ARC-AGI-1 | — | 59.3% |
| CritPt | 12% | — |
| LMArena Hard Prompts | 1482 | — |
| DTBench | — | 86.9% |
| LMCA | — | 38.5% |
| Epoch Capabilities Index | — | 147.42 |
Math Not comparable
MiMo-V2.6-Flash: 51.9 (#52), o3-pro: —
| Benchmark | MiMo-V2.6-Flash | o3-pro |
|---|---|---|
| ProofBench | 63% | — |
| LMArena Math | 1468 | — |
Knowledge MiMo-V2.6-Flash leads
MiMo-V2.6-Flash: 42.2 (#99), o3-pro: 29.5 (#238)
| Benchmark | MiMo-V2.6-Flash | o3-pro |
|---|---|---|
| Confabulations | — | 14.2% |
| Vectara Hallucination Rate | — | 23.3% |
| LMArena Expert | 1501 | — |
Multimodal Not comparable
MiMo-V2.6-Flash: 40.5 (#47), o3-pro: —
| Benchmark | MiMo-V2.6-Flash | o3-pro |
|---|---|---|
| LMArena Vision | 1259 | — |
Multilingual Not comparable
MiMo-V2.6-Flash: 54.0 (#51), o3-pro: —
| Benchmark | MiMo-V2.6-Flash | o3-pro |
|---|---|---|
| LMArena Non-English | 1434 | — |
| LMArena Chinese | 1511 | — |
| LMArena French | 1475 | — |
| LMArena Russian | 1409 | — |
| LMArena Spanish | 1456 | — |
Instruction Following Not comparable
MiMo-V2.6-Flash: 76.8 (#35), o3-pro: —
| Benchmark | MiMo-V2.6-Flash | o3-pro |
|---|---|---|
| LMArena Instruction Following | 1463 | — |
Long Context o3-pro leads
MiMo-V2.6-Flash: 44.8 (#57), o3-pro: 72.2 (#1)
| Benchmark | MiMo-V2.6-Flash | o3-pro |
|---|---|---|
| Fiction.LiveBench | — | 97.2% |
| LMArena Longer Query | 1463 | — |
Writing & Preference MiMo-V2.6-Flash leads
MiMo-V2.6-Flash: 63.1 (#67), o3-pro: 57.1 (#133)
| Benchmark | MiMo-V2.6-Flash | o3-pro |
|---|---|---|
| LMArena Text | 1455 | — |
| LMArena Creative Writing | 1400 | — |
| Short-Story Creative Writing | — | 84.4% |
| LMArena Multi-Turn | 1451 | — |
Frequently asked questions
Is MiMo-V2.6-Flash better than o3-pro?
MiMo-V2.6-Flash is the stronger model overall, scoring 48.5 to 42.9 on the Noometry Index.
Which is cheaper, MiMo-V2.6-Flash or o3-pro?
MiMo-V2.6-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-V2.6-Flash or o3-pro better for coding?
o3-pro scores higher on coding benchmarks: 55.5 versus 53.4 in the Noometry coding category.
Which has the bigger context window?
MiMo-V2.6-Flash does, with 1.05M tokens against 200K.
How many benchmarks do MiMo-V2.6-Flash and o3-pro share?
0 benchmarks have published results for both models. MiMo-V2.6-Flash has 19 scored results on Noometry and o3-pro has 12.