Model comparison
MiMo-V2-Flash vs o1
MiMo-V2-Flash and o1 score almost the same on the Noometry Index (41.3 vs 40.9), so choose on price, context window or the category you care about most.
Last verified . 17 shared benchmarks.
Summary
- They share 17 benchmarks with published results for both. MiMo-V2-Flash scores higher in 3 categories and o1 in 5 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in coding, where o1 leads 46.1 to 36.1.
- MiMo-V2-Flash is cheaper at $0.14 / $0.28 per million input/output tokens, against $15 / $60 for o1.
- 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 | o1 | |
|---|---|---|
| Provider | Xiaomi | OpenAI |
| Noometry Index | 41.3 | 40.9 |
| Released | 2025-12-16 | 2024-09-12 |
| Weights | Open | Proprietary |
| Context window | 262K | 200K |
| Max output | 66K | 100K |
| Input $ / M tokens | $0.14 | $15 |
| Output $ / M tokens | $0.28 | $60 |
| Results tracked | 21 | 52 |
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Category by category
Coding o1 leads
MiMo-V2-Flash: 36.1 (#211), o1: 46.1 (#70)
| Benchmark | MiMo-V2-Flash | o1 |
|---|---|---|
| LMArena Coding | 1443 | 1367 |
| Aider Polyglot | — | 61.7% |
| LMArena WebDev | 1330 | — |
| SciCode | 25.9% | — |
| WeirdML | — | 47.6% |
| LiveBench Coding | — | 69.7% |
| CadEval | — | 56% |
| ALE-Bench | 737.95 | — |
| HumanEval+ | — | 89% |
| MBPP+ | — | 80.2% |
Agentic & Tool Use Not comparable
MiMo-V2-Flash: —, o1: 24.6 (#117)
| Benchmark | MiMo-V2-Flash | o1 |
|---|---|---|
| Cybench | — | 10% |
| METR Time Horizons | — | 51.1% |
Reasoning o1 leads
MiMo-V2-Flash: 24.9 (#157), o1: 27.9 (#111)
| Benchmark | MiMo-V2-Flash | o1 |
|---|---|---|
| LMArena Hard Prompts | 1420 | 1371 |
| SimpleBench | — | 41.7% |
| ARC-AGI-1 | — | 30.7% |
| CritPt | 0% | — |
| Chess Puzzles | — | 15% |
| EnigmaEval | — | 5.7% |
| LiveBench Reasoning | — | 91.6% |
| DTBench | — | 74.7% |
| LiveBench Data Analysis | — | 65.5% |
| LMCA | — | 22.3% |
| Epoch Capabilities Index | — | 141.91 |
| LiveBench | — | 75.7% |
Math MiMo-V2-Flash leads
MiMo-V2-Flash: 38.3 (#139), o1: 36.1 (#175)
| Benchmark | MiMo-V2-Flash | o1 |
|---|---|---|
| LMArena Math | 1396 | 1388 |
| FrontierMath (Tiers 1-3) | — | 14.7% |
| OTIS Mock AIME 2024-2025 | — | 73.3% |
| LiveBench Math | — | 80.3% |
| MATH Level 5 | — | 94.7% |
| FrontierMath (Feb 2025 set) | — | 9.3% |
Knowledge o1 leads
MiMo-V2-Flash: 39.7 (#131), o1: 41.5 (#110)
| Benchmark | MiMo-V2-Flash | o1 |
|---|---|---|
| LMArena Expert | 1425 | 1361 |
| GPQA Diamond | — | 76.8% |
| Humanity's Last Exam | — | 8% |
| SimpleQA Verified | — | 41.1% |
| Confabulations | — | 11.7% |
Multimodal Not comparable
MiMo-V2-Flash: —, o1: 34.2 (#93)
| Benchmark | MiMo-V2-Flash | o1 |
|---|---|---|
| LMArena Vision | — | 1168 |
| GeoBench | — | 80% |
| VPCT | — | 37% |
| SpatialViz-Bench | — | 41.4% |
Multilingual MiMo-V2-Flash leads
MiMo-V2-Flash: 51.0 (#113), o1: 48.6 (#142)
| Benchmark | MiMo-V2-Flash | o1 |
|---|---|---|
| LMArena Non-English | 1392 | 1358 |
| LMArena Chinese | 1462 | 1394 |
| LMArena French | 1429 | 1344 |
| LMArena German | 1395 | 1337 |
| LMArena Japanese | 1325 | 1346 |
| LMArena Korean | 1358 | 1396 |
| LMArena Russian | 1387 | 1356 |
| LMArena Spanish | 1420 | 1345 |
Instruction Following o1 leads
MiMo-V2-Flash: 73.5 (#120), o1: 74.8 (#86)
| Benchmark | MiMo-V2-Flash | o1 |
|---|---|---|
| LMArena Instruction Following | 1392 | 1367 |
| LiveBench Instruction Following | — | 81.5% |
Long Context o1 leads
MiMo-V2-Flash: 43.0 (#110), o1: 50.3 (#9)
| Benchmark | MiMo-V2-Flash | o1 |
|---|---|---|
| LMArena Longer Query | 1409 | 1378 |
| Fiction.LiveBench | — | 83.3% |
Writing & Preference MiMo-V2-Flash leads
MiMo-V2-Flash: 59.7 (#106), o1: 55.6 (#144)
| Benchmark | MiMo-V2-Flash | o1 |
|---|---|---|
| LMArena Text | 1411 | 1366 |
| LMArena Creative Writing | 1375 | 1348 |
| LMArena Multi-Turn | 1404 | 1369 |
| Short-Story Creative Writing | — | 70.2% |
| LiveBench Language | — | 65.4% |
Frequently asked questions
Is MiMo-V2-Flash better than o1?
MiMo-V2-Flash and o1 score almost the same on the Noometry Index (41.3 vs 40.9), so choose on price, context window or the category you care about most.
Which is cheaper, MiMo-V2-Flash or o1?
MiMo-V2-Flash is cheaper. It lists at $0.14 per million input tokens and $0.28 per million output tokens; o1 lists at $15 and $60.
Is MiMo-V2-Flash or o1 better for coding?
o1 scores higher on coding benchmarks: 46.1 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 o1 share?
17 benchmarks have published results for both models. MiMo-V2-Flash has 21 scored results on Noometry and o1 has 52.