Model comparison
ERNIE 5.1 vs GLM-4.5-Air
ERNIE 5.1 is the stronger model overall, scoring 43.8 to 38.9 on the Noometry Index.
Last verified . 17 shared benchmarks.
BaiduSummary
- They share 17 benchmarks with published results for both. ERNIE 5.1 scores higher in 7 categories and GLM-4.5-Air in 1 category; 8 gaps are clear of the uncertainty.
- The widest gap is in coding, where ERNIE 5.1 leads 44.0 to 33.3.
- GLM-4.5-Air has downloadable open weights; the other is API-only.
Side by side
| ERNIE 5.1 | GLM-4.5-Air | |
|---|---|---|
| Provider | Baidu | Z.ai (Zhipu) |
| Noometry Index | 43.8 | 38.9 |
| Released | — | 2025-07-20 |
| Weights | Proprietary | Open |
| Context window | — | 131K |
| Max output | — | 98K |
| Input $ / M tokens | — | $0.20 |
| Output $ / M tokens | — | $1.10 |
| Results tracked | 19 | 27 |
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Category by category
Coding ERNIE 5.1 leads
ERNIE 5.1: 44.0 (#76), GLM-4.5-Air: 33.3 (#259)
| Benchmark | ERNIE 5.1 | GLM-4.5-Air |
|---|---|---|
| LMArena Coding | 1488 | 1397 |
| GSO | — | 2.9% |
Agentic & Tool Use Not comparable
ERNIE 5.1: —, GLM-4.5-Air: —
| Benchmark | ERNIE 5.1 | GLM-4.5-Air |
|---|---|---|
| LMArena Search | 1227 | — |
Reasoning GLM-4.5-Air leads
ERNIE 5.1: 21.9 (#211), GLM-4.5-Air: 24.1 (#166)
| Benchmark | ERNIE 5.1 | GLM-4.5-Air |
|---|---|---|
| LMArena Hard Prompts | 1481 | 1379 |
| Kagi LLM Benchmark | — | 43% |
| NYT Connections (extended) | 23.4% | — |
| ForecastBench | — | 59.2 |
Math ERNIE 5.1 leads
ERNIE 5.1: 40.3 (#92), GLM-4.5-Air: 36.2 (#170)
| Benchmark | ERNIE 5.1 | GLM-4.5-Air |
|---|---|---|
| LMArena Math | 1481 | 1396 |
| Omni-MATH | — | 39.1% |
Knowledge ERNIE 5.1 leads
ERNIE 5.1: 41.9 (#102), GLM-4.5-Air: 35.0 (#191)
| Benchmark | ERNIE 5.1 | GLM-4.5-Air |
|---|---|---|
| LMArena Expert | 1492 | 1370 |
| Humanity's Last Exam | — | 8.1% |
| MMLU-Pro | — | 76.2% |
| Vectara Hallucination Rate | — | 9.3% |
| GPQA (HELM) | — | 59.4% |
Multilingual ERNIE 5.1 leads
ERNIE 5.1: 55.5 (#29), GLM-4.5-Air: 49.1 (#135)
| Benchmark | ERNIE 5.1 | GLM-4.5-Air |
|---|---|---|
| LMArena Non-English | 1454 | 1366 |
| LMArena Chinese | 1508 | 1426 |
| LMArena French | 1488 | 1399 |
| LMArena German | 1470 | 1377 |
| LMArena Japanese | 1422 | 1348 |
| LMArena Korean | 1427 | 1308 |
| LMArena Russian | 1459 | 1373 |
| LMArena Spanish | 1473 | 1386 |
Instruction Following ERNIE 5.1 leads
ERNIE 5.1: 76.7 (#37), GLM-4.5-Air: 69.6 (#171)
| Benchmark | ERNIE 5.1 | GLM-4.5-Air |
|---|---|---|
| LMArena Instruction Following | 1460 | 1354 |
| IFEval | — | 81.2% |
Long Context ERNIE 5.1 leads
ERNIE 5.1: 44.7 (#59), GLM-4.5-Air: 41.6 (#135)
| Benchmark | ERNIE 5.1 | GLM-4.5-Air |
|---|---|---|
| LMArena Longer Query | 1462 | 1366 |
Writing & Preference ERNIE 5.1 leads
ERNIE 5.1: 65.1 (#52), GLM-4.5-Air: 55.9 (#139)
| Benchmark | ERNIE 5.1 | GLM-4.5-Air |
|---|---|---|
| LMArena Text | 1468 | 1384 |
| LMArena Creative Writing | 1441 | 1343 |
| LMArena Multi-Turn | 1471 | 1371 |
| WildBench | — | 78.9% |
Frequently asked questions
Is ERNIE 5.1 better than GLM-4.5-Air?
ERNIE 5.1 is the stronger model overall, scoring 43.8 to 38.9 on the Noometry Index.
Is ERNIE 5.1 or GLM-4.5-Air better for coding?
ERNIE 5.1 scores higher on coding benchmarks: 44.0 versus 33.3 in the Noometry coding category.
How many benchmarks do ERNIE 5.1 and GLM-4.5-Air share?
17 benchmarks have published results for both models. ERNIE 5.1 has 19 scored results on Noometry and GLM-4.5-Air has 27.