Model comparison
MiMo-V2.5 vs Yi-Lightning
MiMo-V2.5 is the stronger model overall, scoring 43.4 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 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 leads 43.9 to 27.4.
- MiMo-V2.5 has downloadable open weights; the other is API-only.
Side by side
| MiMo-V2.5 | Yi-Lightning | |
|---|---|---|
| Provider | Xiaomi | 01.AI |
| Noometry Index | 43.4 | 37.1 |
| Released | 2026-04-22 | 2024-12-02 |
| Weights | Open | Proprietary |
| Context window | 1.05M | — |
| Max output | 131K | — |
| Input $ / M tokens | $0.14 | — |
| Output $ / M tokens | $0.28 | — |
| Results tracked | 23 | 18 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding MiMo-V2.5 leads
MiMo-V2.5: 43.9 (#81), Yi-Lightning: 27.4 (#320)
| Benchmark | MiMo-V2.5 | Yi-Lightning |
|---|---|---|
| LMArena Coding | 1469 | 1312 |
| Aider Polyglot | — | 12.9% |
| LMArena WebDev | 1438 | — |
| SciCode | 43.1% | — |
| ALE-Bench | 513.95 | — |
Reasoning MiMo-V2.5 leads
MiMo-V2.5: 28.6 (#101), Yi-Lightning: 25.9 (#139)
| Benchmark | MiMo-V2.5 | Yi-Lightning |
|---|---|---|
| LMArena Hard Prompts | 1450 | 1302 |
| CritPt | 3.7% | — |
Math Too close to call
MiMo-V2.5: 36.8 (#163), Yi-Lightning: 36.2 (#172)
| Benchmark | MiMo-V2.5 | Yi-Lightning |
|---|---|---|
| LMArena Math | 1436 | 1300 |
| ProofBench | 16% | — |
Knowledge MiMo-V2.5 leads
MiMo-V2.5: 40.8 (#115), Yi-Lightning: 35.4 (#185)
| Benchmark | MiMo-V2.5 | Yi-Lightning |
|---|---|---|
| LMArena Expert | 1460 | 1286 |
Multimodal Not comparable
MiMo-V2.5: 39.8 (#54), Yi-Lightning: —
| Benchmark | MiMo-V2.5 | Yi-Lightning |
|---|---|---|
| LMArena Vision | 1247 | — |
Multilingual MiMo-V2.5 leads
MiMo-V2.5: 51.9 (#99), Yi-Lightning: 42.2 (#196)
| Benchmark | MiMo-V2.5 | Yi-Lightning |
|---|---|---|
| LMArena Non-English | 1404 | 1269 |
| LMArena Chinese | 1468 | 1320 |
| LMArena French | 1447 | 1305 |
| LMArena German | 1421 | 1267 |
| LMArena Japanese | 1306 | 1228 |
| LMArena Korean | 1363 | 1192 |
| LMArena Russian | 1395 | 1255 |
| LMArena Spanish | 1416 | 1315 |
Instruction Following MiMo-V2.5 leads
MiMo-V2.5: 75.5 (#60), Yi-Lightning: 67.4 (#196)
| Benchmark | MiMo-V2.5 | Yi-Lightning |
|---|---|---|
| LMArena Instruction Following | 1434 | 1278 |
Long Context MiMo-V2.5 leads
MiMo-V2.5: 44.2 (#73), Yi-Lightning: 39.4 (#181)
| Benchmark | MiMo-V2.5 | Yi-Lightning |
|---|---|---|
| LMArena Longer Query | 1445 | 1297 |
Writing & Preference MiMo-V2.5 leads
MiMo-V2.5: 61.6 (#86), Yi-Lightning: 50.2 (#184)
| Benchmark | MiMo-V2.5 | Yi-Lightning |
|---|---|---|
| LMArena Text | 1428 | 1302 |
| LMArena Creative Writing | 1393 | 1280 |
| LMArena Multi-Turn | 1445 | 1311 |
Frequently asked questions
Is MiMo-V2.5 better than Yi-Lightning?
MiMo-V2.5 is the stronger model overall, scoring 43.4 to 37.1 on the Noometry Index.
Is MiMo-V2.5 or Yi-Lightning better for coding?
MiMo-V2.5 scores higher on coding benchmarks: 43.9 versus 27.4 in the Noometry coding category.
How many benchmarks do MiMo-V2.5 and Yi-Lightning share?
17 benchmarks have published results for both models. MiMo-V2.5 has 23 scored results on Noometry and Yi-Lightning has 18.