Model comparison
MiMo-V2.6-Pro vs Yi-Lightning
MiMo-V2.6-Pro is the stronger model overall, scoring 50.3 to 37.1 on the Noometry Index.
Last verified . 12 shared benchmarks.
Summary
- They share 12 benchmarks with published results for both. MiMo-V2.6-Pro 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-V2.6-Pro leads 55.5 to 27.4.
- MiMo-V2.6-Pro has downloadable open weights; the other is API-only.
Side by side
| MiMo-V2.6-Pro | Yi-Lightning | |
|---|---|---|
| Provider | Xiaomi | 01.AI |
| Noometry Index | 50.3 | 37.1 |
| Released | 2026-09-21 | 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 | 19 | 18 |
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Category by category
Coding MiMo-V2.6-Pro leads
MiMo-V2.6-Pro: 55.5 (#23), Yi-Lightning: 27.4 (#320)
| Benchmark | MiMo-V2.6-Pro | Yi-Lightning |
|---|---|---|
| LMArena Coding | 1534 | 1312 |
| Aider Polyglot | — | 12.9% |
| LMArena WebDev | 1629 | — |
| SciCode | 60.9% | — |
| ALE-Bench | 1,158 | — |
Agentic & Tool Use Not comparable
MiMo-V2.6-Pro: 37.5 (#35), Yi-Lightning: —
| Benchmark | MiMo-V2.6-Pro | Yi-Lightning |
|---|---|---|
| APEX-Agents | 59.5% | — |
Reasoning MiMo-V2.6-Pro leads
MiMo-V2.6-Pro: 43.1 (#50), Yi-Lightning: 25.9 (#139)
| Benchmark | MiMo-V2.6-Pro | Yi-Lightning |
|---|---|---|
| LMArena Hard Prompts | 1512 | 1302 |
| CritPt | 26.6% | — |
Math MiMo-V2.6-Pro leads
MiMo-V2.6-Pro: 54.5 (#45), Yi-Lightning: 36.2 (#172)
| Benchmark | MiMo-V2.6-Pro | Yi-Lightning |
|---|---|---|
| LMArena Math | 1494 | 1300 |
| ProofBench | 70% | — |
Knowledge MiMo-V2.6-Pro leads
MiMo-V2.6-Pro: 43.5 (#92), Yi-Lightning: 35.4 (#185)
| Benchmark | MiMo-V2.6-Pro | Yi-Lightning |
|---|---|---|
| LMArena Expert | 1543 | 1286 |
Multimodal Not comparable
MiMo-V2.6-Pro: 40.8 (#43), Yi-Lightning: —
| Benchmark | MiMo-V2.6-Pro | Yi-Lightning |
|---|---|---|
| LMArena Vision | 1264 | — |
Multilingual MiMo-V2.6-Pro leads
MiMo-V2.6-Pro: 56.9 (#14), Yi-Lightning: 42.2 (#196)
| Benchmark | MiMo-V2.6-Pro | Yi-Lightning |
|---|---|---|
| LMArena Non-English | 1474 | 1269 |
| LMArena Chinese | 1529 | 1320 |
| LMArena Russian | 1480 | 1255 |
| LMArena French | — | 1305 |
| LMArena German | — | 1267 |
| LMArena Japanese | — | 1228 |
| LMArena Korean | — | 1192 |
| LMArena Spanish | — | 1315 |
Instruction Following MiMo-V2.6-Pro leads
MiMo-V2.6-Pro: 78.2 (#12), Yi-Lightning: 67.4 (#196)
| Benchmark | MiMo-V2.6-Pro | Yi-Lightning |
|---|---|---|
| LMArena Instruction Following | 1493 | 1278 |
Long Context MiMo-V2.6-Pro leads
MiMo-V2.6-Pro: 46.0 (#27), Yi-Lightning: 39.4 (#181)
| Benchmark | MiMo-V2.6-Pro | Yi-Lightning |
|---|---|---|
| LMArena Longer Query | 1501 | 1297 |
Writing & Preference MiMo-V2.6-Pro leads
MiMo-V2.6-Pro: 66.8 (#33), Yi-Lightning: 50.2 (#184)
| Benchmark | MiMo-V2.6-Pro | Yi-Lightning |
|---|---|---|
| LMArena Text | 1492 | 1302 |
| LMArena Creative Writing | 1468 | 1280 |
| LMArena Multi-Turn | 1464 | 1311 |
Frequently asked questions
Is MiMo-V2.6-Pro better than Yi-Lightning?
MiMo-V2.6-Pro is the stronger model overall, scoring 50.3 to 37.1 on the Noometry Index.
Is MiMo-V2.6-Pro or Yi-Lightning better for coding?
MiMo-V2.6-Pro scores higher on coding benchmarks: 55.5 versus 27.4 in the Noometry coding category.
How many benchmarks do MiMo-V2.6-Pro and Yi-Lightning share?
12 benchmarks have published results for both models. MiMo-V2.6-Pro has 19 scored results on Noometry and Yi-Lightning has 18.