Model comparison
MiMo-V2-Omni vs Yi-Lightning
MiMo-V2-Omni is the stronger model overall, scoring 42.9 to 36.5 on the Noometry Index.
Last verified . 17 shared benchmarks.
Summary
- They share 17 benchmarks with published results for both. MiMo-V2-Omni scores higher in 8 categories and Yi-Lightning in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in coding, where MiMo-V2-Omni leads 42.7 to 27.0.
Side by side
| MiMo-V2-Omni | Yi-Lightning | |
|---|---|---|
| Provider | Xiaomi | 01.AI |
| Noometry Index | 42.9 | 36.5 |
| Released | 2026-03-18 | 2024-12-02 |
| Weights | Proprietary | Proprietary |
| Context window | 262K | — |
| Max output | 131K | — |
| Input $ / M tokens | $0.14 | — |
| Output $ / M tokens | $0.28 | — |
| Results tracked | 18 | 18 |
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Category by category
Coding MiMo-V2-Omni leads
MiMo-V2-Omni: 42.7 (#87), Yi-Lightning: 27.0 (#315)
| Benchmark | MiMo-V2-Omni | Yi-Lightning |
|---|---|---|
| LMArena Coding | 1467 | 1313 |
| Aider Polyglot | — | 12.9% |
Reasoning MiMo-V2-Omni leads
MiMo-V2-Omni: 28.6 (#86), Yi-Lightning: 24.9 (#137)
| Benchmark | MiMo-V2-Omni | Yi-Lightning |
|---|---|---|
| LMArena Hard Prompts | 1445 | 1302 |
Math MiMo-V2-Omni leads
MiMo-V2-Omni: 36.4 (#112), Yi-Lightning: 33.5 (#173)
| Benchmark | MiMo-V2-Omni | Yi-Lightning |
|---|---|---|
| LMArena Math | 1432 | 1300 |
Knowledge MiMo-V2-Omni leads
MiMo-V2-Omni: 39.9 (#114), Yi-Lightning: 34.8 (#182)
| Benchmark | MiMo-V2-Omni | Yi-Lightning |
|---|---|---|
| LMArena Expert | 1449 | 1286 |
Multimodal Not comparable
MiMo-V2-Omni: 37.9 (#62), Yi-Lightning: —
| Benchmark | MiMo-V2-Omni | Yi-Lightning |
|---|---|---|
| LMArena Vision | 1228 | — |
Multilingual MiMo-V2-Omni leads
MiMo-V2-Omni: 52.0 (#97), Yi-Lightning: 42.4 (#191)
| Benchmark | MiMo-V2-Omni | Yi-Lightning |
|---|---|---|
| LMArena Non-English | 1404 | 1269 |
| LMArena Chinese | 1469 | 1320 |
| LMArena French | 1448 | 1304 |
| LMArena German | 1398 | 1267 |
| LMArena Japanese | 1318 | 1228 |
| LMArena Korean | 1355 | 1192 |
| LMArena Russian | 1412 | 1255 |
| LMArena Spanish | 1432 | 1315 |
Instruction Following MiMo-V2-Omni leads
MiMo-V2-Omni: 75.4 (#62), Yi-Lightning: 67.6 (#191)
| Benchmark | MiMo-V2-Omni | Yi-Lightning |
|---|---|---|
| LMArena Instruction Following | 1428 | 1278 |
Long Context MiMo-V2-Omni leads
MiMo-V2-Omni: 44.1 (#72), Yi-Lightning: 39.4 (#176)
| Benchmark | MiMo-V2-Omni | Yi-Lightning |
|---|---|---|
| LMArena Longer Query | 1442 | 1297 |
Writing & Preference MiMo-V2-Omni leads
MiMo-V2-Omni: 61.6 (#83), Yi-Lightning: 50.4 (#178)
| Benchmark | MiMo-V2-Omni | Yi-Lightning |
|---|---|---|
| LMArena Text | 1424 | 1302 |
| LMArena Creative Writing | 1393 | 1280 |
| LMArena Multi-Turn | 1446 | 1311 |
Frequently asked questions
Is MiMo-V2-Omni better than Yi-Lightning?
MiMo-V2-Omni is the stronger model overall, scoring 42.9 to 36.5 on the Noometry Index.
Is MiMo-V2-Omni or Yi-Lightning better for coding?
MiMo-V2-Omni scores higher on coding benchmarks: 42.7 versus 27.0 in the Noometry coding category.
How many benchmarks do MiMo-V2-Omni and Yi-Lightning share?
17 benchmarks have published results for both models. MiMo-V2-Omni has 18 scored results on Noometry and Yi-Lightning has 18.