Model comparison
Claude Opus 4.8 vs ERNIE 5.1
Claude Opus 4.8 is the stronger model overall, scoring 60.7 to 43.8 on the Noometry Index.
Last verified . 19 shared benchmarks.
BaiduSummary
- They share 19 benchmarks with published results for both. Claude Opus 4.8 scores higher in 7 categories and ERNIE 5.1 in 1 category; 5 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Claude Opus 4.8 leads 64.7 to 21.9.
- The biggest single-benchmark swing is NYT Connections (extended): 91.1% for Claude Opus 4.8 and 23.4% for ERNIE 5.1.
Side by side
| Claude Opus 4.8 | ERNIE 5.1 | |
|---|---|---|
| Provider | Anthropic | Baidu |
| Noometry Index | 60.7 | 43.8 |
| Released | 2026-05-28 | — |
| Weights | Proprietary | Proprietary |
| Context window | 1M | — |
| Max output | 128K | — |
| Input $ / M tokens | $5 | — |
| Output $ / M tokens | $25 | — |
| Results tracked | 65 | 19 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Claude Opus 4.8 leads
Claude Opus 4.8: 59.9 (#12), ERNIE 5.1: 44.0 (#76)
| Benchmark | Claude Opus 4.8 | ERNIE 5.1 |
|---|---|---|
| LMArena Coding | 1490 | 1488 |
| DeepSWE | 59% | — |
| FrontierCode | 46.5% | — |
| LMArena WebDev | 1556 | — |
| SciCode | 53.5% | — |
| GSO | 47.1% | — |
| WeirdML | 82.9% | — |
| ALE-Bench | 1,564 | — |
Agentic & Tool Use Not comparable
Claude Opus 4.8: 47.6 (#11), ERNIE 5.1: —
| Benchmark | Claude Opus 4.8 | ERNIE 5.1 |
|---|---|---|
| LMArena Search | 1204 | 1227 |
| APEX-Agents | 48.9% | — |
| OSWorld 2.0 | 20.6% | — |
| Remote Labor Index | 8.3% | — |
| τ²-bench Banking | 39.7% | — |
| DeepResearch Bench | 50.2% | — |
| PostTrainBench | 33.8% | — |
| GBAEval | 70.9% | — |
| GDP.pdf | 24% | — |
| Vending-Bench 2 | 5,787 | — |
Reasoning Claude Opus 4.8 leads
Claude Opus 4.8: 64.7 (#16), ERNIE 5.1: 21.9 (#211)
| Benchmark | Claude Opus 4.8 | ERNIE 5.1 |
|---|---|---|
| NYT Connections (extended) | 91.1% | 23.4% |
| LMArena Hard Prompts | 1482 | 1481 |
| ARC-AGI-2 | 72.1% | — |
| SimpleBench | 64.8% | — |
| Kagi LLM Benchmark | 88.8% | — |
| ARC-AGI-1 | 92.5% | — |
| CritPt | 20.9% | — |
| Chess Puzzles | 34% | — |
| EnigmaEval | 23.5% | — |
| EBR-Bench | 28.6% | — |
| Mystery Game Puzzles | 36% | — |
| DTBench | 94.9% | — |
| LMCA | 57.5% | — |
| Surface Evolver Bench | 87.5% | — |
| Bench to the Future 3 | 0.14 | — |
| Epoch Capabilities Index | 158.21 | — |
| ForecastBench | 59.9 | — |
Math Claude Opus 4.8 leads
Claude Opus 4.8: 78.4 (#13), ERNIE 5.1: 40.3 (#92)
| Benchmark | Claude Opus 4.8 | ERNIE 5.1 |
|---|---|---|
| LMArena Math | 1487 | 1481 |
| FrontierMath (Tiers 1-3) | 80% | — |
| FrontierMath Tier 4 | 56.1% | — |
| MathArena Final-Answer Competitions | 91.8% | — |
| OTIS Mock AIME 2024-2025 | 98.3% | — |
| ProofBench | 69% | — |
| FrontierMath (Feb 2025 set) | 47.2% | — |
| FrontierMath Tier 4 (v1) | 31.3% | — |
Knowledge Claude Opus 4.8 leads
Claude Opus 4.8: 61.3 (#29), ERNIE 5.1: 41.9 (#102)
| Benchmark | Claude Opus 4.8 | ERNIE 5.1 |
|---|---|---|
| LMArena Expert | 1502 | 1492 |
| GPQA Diamond | 91% | — |
| SimpleQA Verified | 53% | — |
Multimodal Not comparable
Claude Opus 4.8: 42.9 (#26), ERNIE 5.1: —
| Benchmark | Claude Opus 4.8 | ERNIE 5.1 |
|---|---|---|
| LMArena Vision | 1294 | — |
| Blueprint-Bench 2 | 14.5% | — |
| Furniture Assembly | 42.5% | — |
| LMArena Document | 1475 | — |
Multilingual Too close to call
Claude Opus 4.8: 55.2 (#33), ERNIE 5.1: 55.5 (#29)
| Benchmark | Claude Opus 4.8 | ERNIE 5.1 |
|---|---|---|
| LMArena Non-English | 1450 | 1454 |
| LMArena Chinese | 1507 | 1508 |
| LMArena French | 1481 | 1488 |
| LMArena German | 1472 | 1470 |
| LMArena Japanese | 1440 | 1422 |
| LMArena Korean | 1432 | 1427 |
| LMArena Russian | 1474 | 1459 |
| LMArena Spanish | 1466 | 1473 |
Instruction Following Too close to call
Claude Opus 4.8: 77.4 (#24), ERNIE 5.1: 76.7 (#37)
| Benchmark | Claude Opus 4.8 | ERNIE 5.1 |
|---|---|---|
| LMArena Instruction Following | 1476 | 1460 |
Long Context Too close to call
Claude Opus 4.8: 45.4 (#35), ERNIE 5.1: 44.7 (#59)
| Benchmark | Claude Opus 4.8 | ERNIE 5.1 |
|---|---|---|
| LMArena Longer Query | 1483 | 1462 |
Writing & Preference Claude Opus 4.8 leads
Claude Opus 4.8: 72.0 (#16), ERNIE 5.1: 65.1 (#52)
| Benchmark | Claude Opus 4.8 | ERNIE 5.1 |
|---|---|---|
| LMArena Text | 1461 | 1468 |
| LMArena Creative Writing | 1454 | 1441 |
| LMArena Multi-Turn | 1476 | 1471 |
| EQ-Bench Creative Writing | 1840 | — |
| EQ-Bench 4 | 1281 | — |
Frequently asked questions
Is Claude Opus 4.8 better than ERNIE 5.1?
Claude Opus 4.8 is the stronger model overall, scoring 60.7 to 43.8 on the Noometry Index.
Is Claude Opus 4.8 or ERNIE 5.1 better for coding?
Claude Opus 4.8 scores higher on coding benchmarks: 59.9 versus 44.0 in the Noometry coding category.
How many benchmarks do Claude Opus 4.8 and ERNIE 5.1 share?
19 benchmarks have published results for both models. Claude Opus 4.8 has 65 scored results on Noometry and ERNIE 5.1 has 19.