# Hy4 preview vs Yi-1.5-34B

> Hy4 preview is the stronger model overall, scoring 44.6 to 30.2 on the Noometry Index.

- Canonical page: https://noometry.com/compare/hy4-preview-vs-yi-1-5-34b
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in math, where Hy4 preview leads 54.5 to 25.3.

## Snapshot

| | Hy4 preview | Yi-1.5-34B |
|---|---|---|
| Provider | Tencent | 01.AI |
| Noometry Index | 44.6 | 30.2 |
| Rank | 73 | 286 |
| Context | 1.05M | — |
| Input $/M | $0.83 | — |
| Output $/M | $2.50 | — |
| Weights | Open | Open |

## Coding

- Hy4 preview: 51.4 (#36)
- Yi-1.5-34B: 31.9 (#267)

| Benchmark | Hy4 preview | Yi-1.5-34B |
|---|---|---|
| LMArena WebDev | 1633 | — |
| BigCodeBench Instruct | — | 33.9% |
| LMArena Coding | — | 1169 |
| BigCodeBench Complete | — | 43.8% |

## Reasoning

- Hy4 preview: 30.6 (#75)
- Yi-1.5-34B: 21.5 (#195)

| Benchmark | Hy4 preview | Yi-1.5-34B |
|---|---|---|
| NYT Connections (extended) | 68.2% | — |
| LMArena Hard Prompts | — | 1160 |

## Math

- Hy4 preview: 54.5 (#37)
- Yi-1.5-34B: 25.3 (#248)

| Benchmark | Hy4 preview | Yi-1.5-34B |
|---|---|---|
| ProofBench | 75% | — |
| LMArena Math | — | 1182 |
| MATH Level 5 | — | 25.5% |

## Knowledge

- Hy4 preview: —
- Yi-1.5-34B: 14.8 (#290)

| Benchmark | Hy4 preview | Yi-1.5-34B |
|---|---|---|
| GPQA Diamond | — | 32% |
| LMArena Expert | — | 1144 |

## Multilingual

- Hy4 preview: —
- Yi-1.5-34B: 32.5 (#251)

| Benchmark | Hy4 preview | Yi-1.5-34B |
|---|---|---|
| LMArena Non-English | — | 1121 |
| LMArena Chinese | — | 1213 |
| LMArena French | — | 1155 |
| LMArena German | — | 1111 |
| LMArena Japanese | — | 1021 |
| LMArena Korean | — | 1005 |
| LMArena Russian | — | 1091 |
| LMArena Spanish | — | 1120 |

## Instruction Following

- Hy4 preview: —
- Yi-1.5-34B: 59.4 (#252)

| Benchmark | Hy4 preview | Yi-1.5-34B |
|---|---|---|
| LMArena Instruction Following | — | 1139 |

## Long Context

- Hy4 preview: —
- Yi-1.5-34B: 34.6 (#243)

| Benchmark | Hy4 preview | Yi-1.5-34B |
|---|---|---|
| LMArena Longer Query | — | 1144 |

## Writing & Preference

- Hy4 preview: —
- Yi-1.5-34B: 37.6 (#252)

| Benchmark | Hy4 preview | Yi-1.5-34B |
|---|---|---|
| LMArena Text | — | 1173 |
| LMArena Creative Writing | — | 1135 |
| LMArena Multi-Turn | — | 1153 |

## FAQ

### Is Hy4 preview better than Yi-1.5-34B?

Hy4 preview is the stronger model overall, scoring 44.6 to 30.2 on the Noometry Index.

### Is Hy4 preview or Yi-1.5-34B better for coding?

Hy4 preview scores higher on coding benchmarks: 51.4 versus 31.9 in the Noometry coding category.

### How many benchmarks do Hy4 preview and Yi-1.5-34B share?

0 benchmarks have published results for both models. Hy4 preview has 3 scored results on Noometry and Yi-1.5-34B has 21.