Model comparison
ERNIE 5.1 vs GPT-5.5 Instant
ERNIE 5.1 is the stronger model overall, scoring 43.8 to 42.7 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 5 categories and GPT-5.5 Instant in 3 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in math, where ERNIE 5.1 leads 40.3 to 26.5.
Side by side
| ERNIE 5.1 | GPT-5.5 Instant | |
|---|---|---|
| Provider | Baidu | OpenAI |
| Noometry Index | 43.8 | 42.7 |
| Released | — | 2026-05-05 |
| Weights | Proprietary | Proprietary |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 19 | 27 |
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Category by category
Coding Too close to call
ERNIE 5.1: 44.0 (#76), GPT-5.5 Instant: 44.3 (#74)
| Benchmark | ERNIE 5.1 | GPT-5.5 Instant |
|---|---|---|
| LMArena Coding | 1488 | 1433 |
| SciCode | — | 48.6% |
Agentic & Tool Use Not comparable
ERNIE 5.1: —, GPT-5.5 Instant: —
| Benchmark | ERNIE 5.1 | GPT-5.5 Instant |
|---|---|---|
| LMArena Search | 1227 | — |
Reasoning GPT-5.5 Instant leads
ERNIE 5.1: 21.9 (#211), GPT-5.5 Instant: 24.9 (#155)
| Benchmark | ERNIE 5.1 | GPT-5.5 Instant |
|---|---|---|
| LMArena Hard Prompts | 1481 | 1426 |
| NYT Connections (extended) | 23.4% | — |
| CritPt | — | 0% |
| Chess Puzzles | — | 12% |
| Epoch Capabilities Index | — | 142.52 |
Math ERNIE 5.1 leads
ERNIE 5.1: 40.3 (#92), GPT-5.5 Instant: 26.5 (#259)
| Benchmark | ERNIE 5.1 | GPT-5.5 Instant |
|---|---|---|
| LMArena Math | 1481 | 1420 |
| FrontierMath (Tiers 1-3) | — | 26.3% |
| FrontierMath Tier 4 | — | 2.4% |
| OTIS Mock AIME 2024-2025 | — | 68.1% |
Knowledge GPT-5.5 Instant leads
ERNIE 5.1: 41.9 (#102), GPT-5.5 Instant: 48.9 (#74)
| Benchmark | ERNIE 5.1 | GPT-5.5 Instant |
|---|---|---|
| LMArena Expert | 1492 | 1409 |
| GPQA Diamond | — | 82.5% |
Multimodal Not comparable
ERNIE 5.1: —, GPT-5.5 Instant: 40.0 (#52)
| Benchmark | ERNIE 5.1 | GPT-5.5 Instant |
|---|---|---|
| LMArena Vision | — | 1250 |
| LMArena Document | — | 1403 |
Multilingual ERNIE 5.1 leads
ERNIE 5.1: 55.5 (#29), GPT-5.5 Instant: 52.8 (#80)
| Benchmark | ERNIE 5.1 | GPT-5.5 Instant |
|---|---|---|
| LMArena Non-English | 1454 | 1417 |
| LMArena Chinese | 1508 | 1456 |
| LMArena French | 1488 | 1428 |
| LMArena German | 1470 | 1411 |
| LMArena Japanese | 1422 | 1408 |
| LMArena Korean | 1427 | 1392 |
| LMArena Russian | 1459 | 1431 |
| LMArena Spanish | 1473 | 1429 |
Instruction Following ERNIE 5.1 leads
ERNIE 5.1: 76.7 (#37), GPT-5.5 Instant: 74.2 (#100)
| Benchmark | ERNIE 5.1 | GPT-5.5 Instant |
|---|---|---|
| LMArena Instruction Following | 1460 | 1406 |
Long Context ERNIE 5.1 leads
ERNIE 5.1: 44.7 (#59), GPT-5.5 Instant: 43.4 (#96)
| Benchmark | ERNIE 5.1 | GPT-5.5 Instant |
|---|---|---|
| LMArena Longer Query | 1462 | 1422 |
Writing & Preference ERNIE 5.1 leads
ERNIE 5.1: 65.1 (#52), GPT-5.5 Instant: 61.8 (#85)
| Benchmark | ERNIE 5.1 | GPT-5.5 Instant |
|---|---|---|
| LMArena Text | 1468 | 1419 |
| LMArena Creative Writing | 1441 | 1419 |
| LMArena Multi-Turn | 1471 | 1433 |
Frequently asked questions
Is ERNIE 5.1 better than GPT-5.5 Instant?
ERNIE 5.1 is the stronger model overall, scoring 43.8 to 42.7 on the Noometry Index.
Is ERNIE 5.1 or GPT-5.5 Instant better for coding?
They score almost the same on coding (44.0 vs 44.3); test both on your own repository before choosing.
How many benchmarks do ERNIE 5.1 and GPT-5.5 Instant share?
17 benchmarks have published results for both models. ERNIE 5.1 has 19 scored results on Noometry and GPT-5.5 Instant has 27.