Model comparison
MiMo-V2.5-Pro vs Yi-Lightning
MiMo-V2.5-Pro is the stronger model overall, scoring 45.2 to 37.1 on the Noometry Index.
Last verified . 17 shared benchmarks.
Summary
- They share 17 benchmarks with published results for both. MiMo-V2.5-Pro scores higher in 8 categories and Yi-Lightning in 0 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in coding, where MiMo-V2.5-Pro leads 47.4 to 27.4.
- MiMo-V2.5-Pro has downloadable open weights; the other is API-only.
Side by side
| MiMo-V2.5-Pro | Yi-Lightning | |
|---|---|---|
| Provider | Xiaomi | 01.AI |
| Noometry Index | 45.2 | 37.1 |
| Released | 2026-04-22 | 2024-12-02 |
| Weights | Open | Proprietary |
| Context window | 1.05M | — |
| Max output | 131K | — |
| Input $ / M tokens | $0.43 | — |
| Output $ / M tokens | $0.87 | — |
| Results tracked | 27 | 18 |
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Category by category
Coding MiMo-V2.5-Pro leads
MiMo-V2.5-Pro: 47.4 (#60), Yi-Lightning: 27.4 (#320)
| Benchmark | MiMo-V2.5-Pro | Yi-Lightning |
|---|---|---|
| LMArena Coding | 1503 | 1312 |
| Aider Polyglot | — | 12.9% |
| LMArena WebDev | 1479 | — |
| SciCode | 50.2% | — |
| ALE-Bench | 899.8 | — |
Reasoning Too close to call
MiMo-V2.5-Pro: 26.8 (#130), Yi-Lightning: 25.9 (#139)
| Benchmark | MiMo-V2.5-Pro | Yi-Lightning |
|---|---|---|
| LMArena Hard Prompts | 1488 | 1302 |
| NYT Connections (extended) | 34.4% | — |
| CritPt | 4% | — |
| DTBench | 84.5% | — |
| LMCA | 29.5% | — |
Math MiMo-V2.5-Pro leads
MiMo-V2.5-Pro: 40.0 (#96), Yi-Lightning: 36.2 (#172)
| Benchmark | MiMo-V2.5-Pro | Yi-Lightning |
|---|---|---|
| LMArena Math | 1481 | 1300 |
| ProofBench | 22% | — |
Knowledge MiMo-V2.5-Pro leads
MiMo-V2.5-Pro: 42.2 (#98), Yi-Lightning: 35.4 (#185)
| Benchmark | MiMo-V2.5-Pro | Yi-Lightning |
|---|---|---|
| LMArena Expert | 1503 | 1286 |
Multilingual MiMo-V2.5-Pro leads
MiMo-V2.5-Pro: 55.1 (#34), Yi-Lightning: 42.2 (#196)
| Benchmark | MiMo-V2.5-Pro | Yi-Lightning |
|---|---|---|
| LMArena Non-English | 1449 | 1269 |
| LMArena Chinese | 1507 | 1320 |
| LMArena French | 1488 | 1305 |
| LMArena German | 1458 | 1267 |
| LMArena Japanese | 1412 | 1228 |
| LMArena Korean | 1437 | 1192 |
| LMArena Russian | 1450 | 1255 |
| LMArena Spanish | 1471 | 1315 |
Instruction Following MiMo-V2.5-Pro leads
MiMo-V2.5-Pro: 77.5 (#21), Yi-Lightning: 67.4 (#196)
| Benchmark | MiMo-V2.5-Pro | Yi-Lightning |
|---|---|---|
| LMArena Instruction Following | 1477 | 1278 |
Long Context MiMo-V2.5-Pro leads
MiMo-V2.5-Pro: 45.4 (#37), Yi-Lightning: 39.4 (#181)
| Benchmark | MiMo-V2.5-Pro | Yi-Lightning |
|---|---|---|
| LMArena Longer Query | 1483 | 1297 |
Writing & Preference MiMo-V2.5-Pro leads
MiMo-V2.5-Pro: 65.3 (#49), Yi-Lightning: 50.2 (#184)
| Benchmark | MiMo-V2.5-Pro | Yi-Lightning |
|---|---|---|
| LMArena Text | 1465 | 1302 |
| LMArena Creative Writing | 1440 | 1280 |
| LMArena Multi-Turn | 1477 | 1311 |
| EQ-Bench Creative Writing | 1493 | — |
| EQ-Bench 4 | 1208 | — |
Frequently asked questions
Is MiMo-V2.5-Pro better than Yi-Lightning?
MiMo-V2.5-Pro is the stronger model overall, scoring 45.2 to 37.1 on the Noometry Index.
Is MiMo-V2.5-Pro or Yi-Lightning better for coding?
MiMo-V2.5-Pro scores higher on coding benchmarks: 47.4 versus 27.4 in the Noometry coding category.
How many benchmarks do MiMo-V2.5-Pro and Yi-Lightning share?
17 benchmarks have published results for both models. MiMo-V2.5-Pro has 27 scored results on Noometry and Yi-Lightning has 18.