# ERNIE 5.1 vs Hy4 preview

> Hy4 preview is the stronger model overall, scoring 45.3 to 43.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/ernie-5-1-vs-hy4-preview
- Last updated: 2026-10-10
- Shared benchmarks: 1

## Summary

- They share 1 benchmark with published results for both. ERNIE 5.1 scores higher in 0 categories and Hy4 preview in 3 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in math, where Hy4 preview leads 55.7 to 40.3.
- The biggest single-benchmark swing is NYT Connections (extended): 23.4% for ERNIE 5.1 and 68.2% for Hy4 preview.
- Hy4 preview has downloadable open weights; the other is API-only.

## Snapshot

| | ERNIE 5.1 | Hy4 preview |
|---|---|---|
| Provider | Baidu | Tencent |
| Noometry Index | 43.8 | 45.3 |
| Rank | 83 | 73 |
| Context | — | 1.05M |
| Input $/M | — | $0.75 |
| Output $/M | — | $2.25 |
| Weights | Proprietary | Open |

## Coding

- ERNIE 5.1: 44.0 (#76)
- Hy4 preview: 51.6 (#38)

| Benchmark | ERNIE 5.1 | Hy4 preview |
|---|---|---|
| LMArena WebDev | — | 1632 |
| LMArena Coding | 1488 | — |

## Agentic & Tool Use

- ERNIE 5.1: —
- Hy4 preview: —

| Benchmark | ERNIE 5.1 | Hy4 preview |
|---|---|---|
| LMArena Search | 1227 | — |

## Reasoning

- ERNIE 5.1: 21.9 (#211)
- Hy4 preview: 31.9 (#79)

| Benchmark | ERNIE 5.1 | Hy4 preview |
|---|---|---|
| NYT Connections (extended) | 23.4% | 68.2% |
| LMArena Hard Prompts | 1481 | — |

## Math

- ERNIE 5.1: 40.3 (#92)
- Hy4 preview: 55.7 (#42)

| Benchmark | ERNIE 5.1 | Hy4 preview |
|---|---|---|
| ProofBench | — | 75% |
| LMArena Math | 1481 | — |

## Knowledge

- ERNIE 5.1: 41.9 (#102)
- Hy4 preview: —

| Benchmark | ERNIE 5.1 | Hy4 preview |
|---|---|---|
| LMArena Expert | 1492 | — |

## Multilingual

- ERNIE 5.1: 55.5 (#29)
- Hy4 preview: —

| Benchmark | ERNIE 5.1 | Hy4 preview |
|---|---|---|
| LMArena Non-English | 1454 | — |
| LMArena Chinese | 1508 | — |
| LMArena French | 1488 | — |
| LMArena German | 1470 | — |
| LMArena Japanese | 1422 | — |
| LMArena Korean | 1427 | — |
| LMArena Russian | 1459 | — |
| LMArena Spanish | 1473 | — |

## Instruction Following

- ERNIE 5.1: 76.7 (#37)
- Hy4 preview: —

| Benchmark | ERNIE 5.1 | Hy4 preview |
|---|---|---|
| LMArena Instruction Following | 1460 | — |

## Long Context

- ERNIE 5.1: 44.7 (#59)
- Hy4 preview: —

| Benchmark | ERNIE 5.1 | Hy4 preview |
|---|---|---|
| LMArena Longer Query | 1462 | — |

## Writing & Preference

- ERNIE 5.1: 65.1 (#52)
- Hy4 preview: —

| Benchmark | ERNIE 5.1 | Hy4 preview |
|---|---|---|
| LMArena Text | 1468 | — |
| LMArena Creative Writing | 1441 | — |
| LMArena Multi-Turn | 1471 | — |

## FAQ

### Is ERNIE 5.1 better than Hy4 preview?

Hy4 preview is the stronger model overall, scoring 45.3 to 43.8 on the Noometry Index.

### Is ERNIE 5.1 or Hy4 preview better for coding?

Hy4 preview scores higher on coding benchmarks: 51.6 versus 44.0 in the Noometry coding category.

### How many benchmarks do ERNIE 5.1 and Hy4 preview share?

1 benchmark has published results for both models. ERNIE 5.1 has 19 scored results on Noometry and Hy4 preview has 3.