Model comparison
ERNIE 5.1 vs Grok 4.3
ERNIE 5.1 and Grok 4.3 score almost the same on the Noometry Index (43.8 vs 43.8), so choose on price, context window or the category you care about most.
Last verified . 19 shared benchmarks.
BaiduSummary
- They share 19 benchmarks with published results for both. ERNIE 5.1 scores higher in 5 categories and Grok 4.3 in 3 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.3 leads 35.9 to 21.9.
- The biggest single-benchmark swing is NYT Connections (extended): 23.4% for ERNIE 5.1 and 55.2% for Grok 4.3.
Side by side
| ERNIE 5.1 | Grok 4.3 | |
|---|---|---|
| Provider | Baidu | xAI |
| Noometry Index | 43.8 | 43.8 |
| Released | — | 2026-04-17 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1M |
| Max output | — | 30K |
| Input $ / M tokens | — | $1.25 |
| Output $ / M tokens | — | $2.50 |
| Results tracked | 19 | 40 |
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Category by category
Coding ERNIE 5.1 leads
ERNIE 5.1: 44.0 (#76), Grok 4.3: 41.6 (#121)
| Benchmark | ERNIE 5.1 | Grok 4.3 |
|---|---|---|
| LMArena Coding | 1488 | 1415 |
| LMArena WebDev | — | 1357 |
| SciCode | — | 47.3% |
| WeirdML | — | 49.9% |
| ALE-Bench | — | 944.17 |
Agentic & Tool Use Not comparable
ERNIE 5.1: —, Grok 4.3: 27.7 (#99)
| Benchmark | ERNIE 5.1 | Grok 4.3 |
|---|---|---|
| LMArena Search | 1227 | 1165 |
| GDP.pdf | — | 8% |
| Vending-Bench 2 | — | 35.26 |
Reasoning Grok 4.3 leads
ERNIE 5.1: 21.9 (#211), Grok 4.3: 35.9 (#68)
| Benchmark | ERNIE 5.1 | Grok 4.3 |
|---|---|---|
| NYT Connections (extended) | 23.4% | 55.2% |
| LMArena Hard Prompts | 1481 | 1396 |
| CritPt | — | 8% |
| Chess Puzzles | — | 25% |
| DTBench | — | 90.7% |
| LMCA | — | 38.3% |
| Epoch Capabilities Index | — | 149.16 |
| ForecastBench | — | 60.3 |
Math Grok 4.3 leads
ERNIE 5.1: 40.3 (#92), Grok 4.3: 46.0 (#74)
| Benchmark | ERNIE 5.1 | Grok 4.3 |
|---|---|---|
| LMArena Math | 1481 | 1388 |
| FrontierMath (Tiers 1-3) | — | 42.8% |
| FrontierMath Tier 4 | — | 14.6% |
| OTIS Mock AIME 2024-2025 | — | 93.3% |
| ProofBench | — | 11% |
Knowledge Grok 4.3 leads
ERNIE 5.1: 41.9 (#102), Grok 4.3: 52.5 (#62)
| Benchmark | ERNIE 5.1 | Grok 4.3 |
|---|---|---|
| LMArena Expert | 1492 | 1385 |
| GPQA Diamond | — | 88.8% |
| SimpleQA Verified | — | 33.2% |
Multimodal Not comparable
ERNIE 5.1: —, Grok 4.3: 31.6 (#104)
| Benchmark | ERNIE 5.1 | Grok 4.3 |
|---|---|---|
| LMArena Vision | — | 1229 |
| Blueprint-Bench 2 | — | 0% |
Multilingual ERNIE 5.1 leads
ERNIE 5.1: 55.5 (#29), Grok 4.3: 50.5 (#120)
| Benchmark | ERNIE 5.1 | Grok 4.3 |
|---|---|---|
| LMArena Non-English | 1454 | 1385 |
| LMArena Chinese | 1508 | 1422 |
| LMArena French | 1488 | 1412 |
| LMArena German | 1470 | 1395 |
| LMArena Japanese | 1422 | 1379 |
| LMArena Korean | 1427 | 1356 |
| LMArena Russian | 1459 | 1399 |
| LMArena Spanish | 1473 | 1398 |
Instruction Following ERNIE 5.1 leads
ERNIE 5.1: 76.7 (#37), Grok 4.3: 72.1 (#140)
| Benchmark | ERNIE 5.1 | Grok 4.3 |
|---|---|---|
| LMArena Instruction Following | 1460 | 1366 |
Long Context ERNIE 5.1 leads
ERNIE 5.1: 44.7 (#59), Grok 4.3: 42.5 (#123)
| Benchmark | ERNIE 5.1 | Grok 4.3 |
|---|---|---|
| LMArena Longer Query | 1462 | 1393 |
Writing & Preference ERNIE 5.1 leads
ERNIE 5.1: 65.1 (#52), Grok 4.3: 58.5 (#118)
| Benchmark | ERNIE 5.1 | Grok 4.3 |
|---|---|---|
| LMArena Text | 1468 | 1397 |
| LMArena Creative Writing | 1441 | 1380 |
| LMArena Multi-Turn | 1471 | 1406 |
| EQ-Bench 4 | — | 1075 |
Frequently asked questions
Is ERNIE 5.1 better than Grok 4.3?
ERNIE 5.1 and Grok 4.3 score almost the same on the Noometry Index (43.8 vs 43.8), so choose on price, context window or the category you care about most.
Is ERNIE 5.1 or Grok 4.3 better for coding?
ERNIE 5.1 scores higher on coding benchmarks: 44.0 versus 41.6 in the Noometry coding category.
How many benchmarks do ERNIE 5.1 and Grok 4.3 share?
19 benchmarks have published results for both models. ERNIE 5.1 has 19 scored results on Noometry and Grok 4.3 has 40.