Model comparison
MiMo-V2.5 vs o1-pro
MiMo-V2.5 is the stronger model overall, scoring 43.4 to 31.5 on the Noometry Index.
Last verified . 0 shared benchmarks.
Summary
- The widest gap is in knowledge, where MiMo-V2.5 leads 40.8 to 29.7.
- MiMo-V2.5 is cheaper at $0.14 / $0.28 per million input/output tokens, against $150 / $600 for o1-pro.
- MiMo-V2.5 accepts more context: 1.05M tokens versus 200K.
- MiMo-V2.5 has downloadable open weights; the other is API-only.
Side by side
| MiMo-V2.5 | o1-pro | |
|---|---|---|
| Provider | Xiaomi | OpenAI |
| Noometry Index | 43.4 | 31.5 |
| Released | 2026-04-22 | 2025-03-19 |
| Weights | Open | Proprietary |
| Context window | 1.05M | 200K |
| Max output | 131K | 100K |
| Input $ / M tokens | $0.14 | $150 |
| Output $ / M tokens | $0.28 | $600 |
| Results tracked | 23 | 3 |
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Category by category
Coding Not comparable
MiMo-V2.5: 43.9 (#81), o1-pro: —
| Benchmark | MiMo-V2.5 | o1-pro |
|---|---|---|
| LMArena WebDev | 1438 | — |
| SciCode | 43.1% | — |
| LMArena Coding | 1469 | — |
| ALE-Bench | 513.95 | — |
Reasoning MiMo-V2.5 leads
MiMo-V2.5: 28.6 (#101), o1-pro: 20.4 (#239)
| Benchmark | MiMo-V2.5 | o1-pro |
|---|---|---|
| ARC-AGI-1 | — | 23.3% |
| CritPt | 3.7% | — |
| EnigmaEval | — | 6.1% |
| LMArena Hard Prompts | 1450 | — |
Math Not comparable
MiMo-V2.5: 36.8 (#163), o1-pro: —
| Benchmark | MiMo-V2.5 | o1-pro |
|---|---|---|
| ProofBench | 16% | — |
| LMArena Math | 1436 | — |
Knowledge MiMo-V2.5 leads
MiMo-V2.5: 40.8 (#115), o1-pro: 29.7 (#234)
| Benchmark | MiMo-V2.5 | o1-pro |
|---|---|---|
| Humanity's Last Exam | — | 8.1% |
| LMArena Expert | 1460 | — |
Multimodal Not comparable
MiMo-V2.5: 39.8 (#54), o1-pro: —
| Benchmark | MiMo-V2.5 | o1-pro |
|---|---|---|
| LMArena Vision | 1247 | — |
Multilingual Not comparable
MiMo-V2.5: 51.9 (#99), o1-pro: —
| Benchmark | MiMo-V2.5 | o1-pro |
|---|---|---|
| LMArena Non-English | 1404 | — |
| LMArena Chinese | 1468 | — |
| LMArena French | 1447 | — |
| LMArena German | 1421 | — |
| LMArena Japanese | 1306 | — |
| LMArena Korean | 1363 | — |
| LMArena Russian | 1395 | — |
| LMArena Spanish | 1416 | — |
Instruction Following Not comparable
MiMo-V2.5: 75.5 (#60), o1-pro: —
| Benchmark | MiMo-V2.5 | o1-pro |
|---|---|---|
| LMArena Instruction Following | 1434 | — |
Long Context Not comparable
MiMo-V2.5: 44.2 (#73), o1-pro: —
| Benchmark | MiMo-V2.5 | o1-pro |
|---|---|---|
| LMArena Longer Query | 1445 | — |
Writing & Preference Not comparable
MiMo-V2.5: 61.6 (#86), o1-pro: —
| Benchmark | MiMo-V2.5 | o1-pro |
|---|---|---|
| LMArena Text | 1428 | — |
| LMArena Creative Writing | 1393 | — |
| LMArena Multi-Turn | 1445 | — |
Frequently asked questions
Is MiMo-V2.5 better than o1-pro?
MiMo-V2.5 is the stronger model overall, scoring 43.4 to 31.5 on the Noometry Index.
Which is cheaper, MiMo-V2.5 or o1-pro?
MiMo-V2.5 is cheaper. It lists at $0.14 per million input tokens and $0.28 per million output tokens; o1-pro lists at $150 and $600.
Which has the bigger context window?
MiMo-V2.5 does, with 1.05M tokens against 200K.
How many benchmarks do MiMo-V2.5 and o1-pro share?
0 benchmarks have published results for both models. MiMo-V2.5 has 23 scored results on Noometry and o1-pro has 3.