Model comparison
Solar Pro4 vs Yi-Lightning
Solar Pro4 is the stronger model overall, scoring 42.1 to 37.1 on the Noometry Index.
Last verified . 17 shared benchmarks.
UpstageSummary
- They share 17 benchmarks with published results for both. Solar Pro4 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 Solar Pro4 leads 40.1 to 27.4.
Side by side
| Solar Pro4 | Yi-Lightning | |
|---|---|---|
| Provider | Upstage | 01.AI |
| Noometry Index | 42.1 | 37.1 |
| Released | 2026-08-06 | 2024-12-02 |
| Weights | Proprietary | Proprietary |
| Context window | 524K | — |
| Max output | 131K | — |
| Input $ / M tokens | $0.30 | — |
| Output $ / M tokens | $1.20 | — |
| Results tracked | 18 | 18 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Solar Pro4 leads
Solar Pro4: 40.1 (#149), Yi-Lightning: 27.4 (#320)
| Benchmark | Solar Pro4 | Yi-Lightning |
|---|---|---|
| LMArena Coding | 1437 | 1312 |
| Aider Polyglot | — | 12.9% |
| LMArena WebDev | 1371 | — |
Reasoning Solar Pro4 leads
Solar Pro4: 28.5 (#104), Yi-Lightning: 25.9 (#139)
| Benchmark | Solar Pro4 | Yi-Lightning |
|---|---|---|
| LMArena Hard Prompts | 1399 | 1302 |
Math Solar Pro4 leads
Solar Pro4: 38.8 (#128), Yi-Lightning: 36.2 (#172)
| Benchmark | Solar Pro4 | Yi-Lightning |
|---|---|---|
| LMArena Math | 1416 | 1300 |
Knowledge Solar Pro4 leads
Solar Pro4: 39.8 (#129), Yi-Lightning: 35.4 (#185)
| Benchmark | Solar Pro4 | Yi-Lightning |
|---|---|---|
| LMArena Expert | 1427 | 1286 |
Multilingual Solar Pro4 leads
Solar Pro4: 48.7 (#139), Yi-Lightning: 42.2 (#196)
| Benchmark | Solar Pro4 | Yi-Lightning |
|---|---|---|
| LMArena Non-English | 1361 | 1269 |
| LMArena Chinese | 1415 | 1320 |
| LMArena French | 1397 | 1305 |
| LMArena German | 1364 | 1267 |
| LMArena Japanese | 1309 | 1228 |
| LMArena Korean | 1382 | 1192 |
| LMArena Russian | 1360 | 1255 |
| LMArena Spanish | 1401 | 1315 |
Instruction Following Solar Pro4 leads
Solar Pro4: 72.7 (#132), Yi-Lightning: 67.4 (#196)
| Benchmark | Solar Pro4 | Yi-Lightning |
|---|---|---|
| LMArena Instruction Following | 1377 | 1278 |
Long Context Solar Pro4 leads
Solar Pro4: 42.1 (#130), Yi-Lightning: 39.4 (#181)
| Benchmark | Solar Pro4 | Yi-Lightning |
|---|---|---|
| LMArena Longer Query | 1381 | 1297 |
Writing & Preference Solar Pro4 leads
Solar Pro4: 56.5 (#138), Yi-Lightning: 50.2 (#184)
| Benchmark | Solar Pro4 | Yi-Lightning |
|---|---|---|
| LMArena Text | 1386 | 1302 |
| LMArena Creative Writing | 1316 | 1280 |
| LMArena Multi-Turn | 1385 | 1311 |
Frequently asked questions
Is Solar Pro4 better than Yi-Lightning?
Solar Pro4 is the stronger model overall, scoring 42.1 to 37.1 on the Noometry Index.
Is Solar Pro4 or Yi-Lightning better for coding?
Solar Pro4 scores higher on coding benchmarks: 40.1 versus 27.4 in the Noometry coding category.
How many benchmarks do Solar Pro4 and Yi-Lightning share?
17 benchmarks have published results for both models. Solar Pro4 has 18 scored results on Noometry and Yi-Lightning has 18.