Model comparison
ERNIE 5.1 vs Solar Pro4
ERNIE 5.1 is the stronger model overall, scoring 43.8 to 42.1 on the Noometry Index.
Last verified . 17 shared benchmarks.
Baidu
UpstageSummary
- They share 17 benchmarks with published results for both. ERNIE 5.1 scores higher in 7 categories and Solar Pro4 in 1 category; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where ERNIE 5.1 leads 65.1 to 56.5.
Side by side
| ERNIE 5.1 | Solar Pro4 | |
|---|---|---|
| Provider | Baidu | Upstage |
| Noometry Index | 43.8 | 42.1 |
| Released | — | 2026-08-06 |
| Weights | Proprietary | Proprietary |
| Context window | — | 524K |
| Max output | — | 131K |
| Input $ / M tokens | — | $0.30 |
| Output $ / M tokens | — | $1.20 |
| Results tracked | 19 | 18 |
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Category by category
Coding ERNIE 5.1 leads
ERNIE 5.1: 44.0 (#76), Solar Pro4: 40.1 (#149)
| Benchmark | ERNIE 5.1 | Solar Pro4 |
|---|---|---|
| LMArena Coding | 1488 | 1437 |
| LMArena WebDev | — | 1371 |
Agentic & Tool Use Not comparable
ERNIE 5.1: —, Solar Pro4: —
| Benchmark | ERNIE 5.1 | Solar Pro4 |
|---|---|---|
| LMArena Search | 1227 | — |
Reasoning Solar Pro4 leads
ERNIE 5.1: 21.9 (#211), Solar Pro4: 28.5 (#104)
| Benchmark | ERNIE 5.1 | Solar Pro4 |
|---|---|---|
| LMArena Hard Prompts | 1481 | 1399 |
| NYT Connections (extended) | 23.4% | — |
Math ERNIE 5.1 leads
ERNIE 5.1: 40.3 (#92), Solar Pro4: 38.8 (#128)
| Benchmark | ERNIE 5.1 | Solar Pro4 |
|---|---|---|
| LMArena Math | 1481 | 1416 |
Knowledge ERNIE 5.1 leads
ERNIE 5.1: 41.9 (#102), Solar Pro4: 39.8 (#129)
| Benchmark | ERNIE 5.1 | Solar Pro4 |
|---|---|---|
| LMArena Expert | 1492 | 1427 |
Multilingual ERNIE 5.1 leads
ERNIE 5.1: 55.5 (#29), Solar Pro4: 48.7 (#139)
| Benchmark | ERNIE 5.1 | Solar Pro4 |
|---|---|---|
| LMArena Non-English | 1454 | 1361 |
| LMArena Chinese | 1508 | 1415 |
| LMArena French | 1488 | 1397 |
| LMArena German | 1470 | 1364 |
| LMArena Japanese | 1422 | 1309 |
| LMArena Korean | 1427 | 1382 |
| LMArena Russian | 1459 | 1360 |
| LMArena Spanish | 1473 | 1401 |
Instruction Following ERNIE 5.1 leads
ERNIE 5.1: 76.7 (#37), Solar Pro4: 72.7 (#132)
| Benchmark | ERNIE 5.1 | Solar Pro4 |
|---|---|---|
| LMArena Instruction Following | 1460 | 1377 |
Long Context ERNIE 5.1 leads
ERNIE 5.1: 44.7 (#59), Solar Pro4: 42.1 (#130)
| Benchmark | ERNIE 5.1 | Solar Pro4 |
|---|---|---|
| LMArena Longer Query | 1462 | 1381 |
Writing & Preference ERNIE 5.1 leads
ERNIE 5.1: 65.1 (#52), Solar Pro4: 56.5 (#138)
| Benchmark | ERNIE 5.1 | Solar Pro4 |
|---|---|---|
| LMArena Text | 1468 | 1386 |
| LMArena Creative Writing | 1441 | 1316 |
| LMArena Multi-Turn | 1471 | 1385 |
Frequently asked questions
Is ERNIE 5.1 better than Solar Pro4?
ERNIE 5.1 is the stronger model overall, scoring 43.8 to 42.1 on the Noometry Index.
Is ERNIE 5.1 or Solar Pro4 better for coding?
ERNIE 5.1 scores higher on coding benchmarks: 44.0 versus 40.1 in the Noometry coding category.
How many benchmarks do ERNIE 5.1 and Solar Pro4 share?
17 benchmarks have published results for both models. ERNIE 5.1 has 19 scored results on Noometry and Solar Pro4 has 18.