# Amazon Nova Experimental Chat 10 09 vs Hy4 preview

> Hy4 preview is the stronger model overall, scoring 45.3 to 41.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/amazon-nova-experimental-chat-10-09-vs-hy4-preview
- Last updated: 2026-10-12
- Shared benchmarks: 0

## Summary

- The widest gap is in coding, where Hy4 preview leads 51.6 to 40.2.
- Hy4 preview has downloadable open weights; the other is API-only.

## Snapshot

| | Amazon Nova Experimental Chat 10 09 | Hy4 preview |
|---|---|---|
| Provider | Amazon | Tencent |
| Noometry Index | 41.9 | 45.3 |
| Rank | 126 | 73 |
| Context | — | 1.05M |
| Input $/M | — | $0.83 |
| Output $/M | — | $2.50 |
| Weights | Proprietary | Open |

## Coding

- Amazon Nova Experimental Chat 10 09: 40.2 (#145)
- Hy4 preview: 51.6 (#38)

| Benchmark | Amazon Nova Experimental Chat 10 09 | Hy4 preview |
|---|---|---|
| LMArena WebDev | — | 1632 |
| LMArena Coding | 1370 | — |

## Reasoning

- Amazon Nova Experimental Chat 10 09: 27.3 (#120)
- Hy4 preview: 31.9 (#79)

| Benchmark | Amazon Nova Experimental Chat 10 09 | Hy4 preview |
|---|---|---|
| NYT Connections (extended) | — | 68.2% |
| LMArena Hard Prompts | 1356 | — |

## Math

- Amazon Nova Experimental Chat 10 09: —
- Hy4 preview: 55.7 (#42)

| Benchmark | Amazon Nova Experimental Chat 10 09 | Hy4 preview |
|---|---|---|
| ProofBench | — | 75% |

## Multilingual

- Amazon Nova Experimental Chat 10 09: 47.3 (#150)
- Hy4 preview: —

| Benchmark | Amazon Nova Experimental Chat 10 09 | Hy4 preview |
|---|---|---|
| LMArena Non-English | 1340 | — |
| LMArena Chinese | 1341 | — |

## Instruction Following

- Amazon Nova Experimental Chat 10 09: 69.4 (#172)
- Hy4 preview: —

| Benchmark | Amazon Nova Experimental Chat 10 09 | Hy4 preview |
|---|---|---|
| LMArena Instruction Following | 1315 | — |

## Long Context

- Amazon Nova Experimental Chat 10 09: 40.5 (#152)
- Hy4 preview: —

| Benchmark | Amazon Nova Experimental Chat 10 09 | Hy4 preview |
|---|---|---|
| LMArena Longer Query | 1333 | — |

## Writing & Preference

- Amazon Nova Experimental Chat 10 09: 54.7 (#149)
- Hy4 preview: —

| Benchmark | Amazon Nova Experimental Chat 10 09 | Hy4 preview |
|---|---|---|
| LMArena Text | 1364 | — |
| LMArena Creative Writing | 1307 | — |
| LMArena Multi-Turn | 1355 | — |

## FAQ

### Is Amazon Nova Experimental Chat 10 09 better than Hy4 preview?

Hy4 preview is the stronger model overall, scoring 45.3 to 41.9 on the Noometry Index.

### Is Amazon Nova Experimental Chat 10 09 or Hy4 preview better for coding?

Hy4 preview scores higher on coding benchmarks: 51.6 versus 40.2 in the Noometry coding category.

### How many benchmarks do Amazon Nova Experimental Chat 10 09 and Hy4 preview share?

0 benchmarks have published results for both models. Amazon Nova Experimental Chat 10 09 has 9 scored results on Noometry and Hy4 preview has 3.