# Claude Haiku 5.5 vs Hy4 preview

> Claude Haiku 5.5 is the stronger model overall, scoring 49.5 to 45.3 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-haiku-5-5-vs-hy4-preview
- Last updated: 2026-10-12
- Shared benchmarks: 2

## Summary

- They share 2 benchmarks with published results for both. Claude Haiku 5.5 scores higher in 2 categories and Hy4 preview in 1 category; 3 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Haiku 5.5 leads 73.6 to 55.7.
- Claude Haiku 5.5 is cheaper at $0.10 / $0.50 per million input/output tokens, against $0.83 / $2.50 for Hy4 preview.
- Hy4 preview accepts more context: 1.05M tokens versus 1M.
- Hy4 preview has downloadable open weights; the other is API-only.

## Snapshot

| | Claude Haiku 5.5 | Hy4 preview |
|---|---|---|
| Provider | Anthropic | Tencent |
| Noometry Index | 49.5 | 45.3 |
| Rank | 52 | 73 |
| Context | 1M | 1.05M |
| Input $/M | $0.10 | $0.83 |
| Output $/M | $0.50 | $2.50 |
| Weights | Proprietary | Open |

## Coding

- Claude Haiku 5.5: 49.2 (#50)
- Hy4 preview: 51.6 (#38)

| Benchmark | Claude Haiku 5.5 | Hy4 preview |
|---|---|---|
| LMArena WebDev | 1587 | 1632 |

## Reasoning

- Claude Haiku 5.5: 35.2 (#69)
- Hy4 preview: 31.9 (#79)

| Benchmark | Claude Haiku 5.5 | Hy4 preview |
|---|---|---|
| NYT Connections (extended) | 65.7% | 68.2% |
| Mystery Game Puzzles | 30% | — |

## Math

- Claude Haiku 5.5: 73.6 (#18)
- Hy4 preview: 55.7 (#42)

| Benchmark | Claude Haiku 5.5 | Hy4 preview |
|---|---|---|
| FrontierMath (Tiers 1-3) | 75.1% | — |
| FrontierMath Tier 4 | 46.3% | — |
| OTIS Mock AIME 2024-2025 | 98.9% | — |
| ProofBench | — | 75% |

## Knowledge

- Claude Haiku 5.5: 50.8 (#70)
- Hy4 preview: —

| Benchmark | Claude Haiku 5.5 | Hy4 preview |
|---|---|---|
| GPQA Diamond | 89.6% | — |
| SimpleQA Verified | 23.8% | — |

## Multimodal

- Claude Haiku 5.5: 43.7 (#21)
- Hy4 preview: —

| Benchmark | Claude Haiku 5.5 | Hy4 preview |
|---|---|---|
| Furniture Assembly | 47.5% | — |

## FAQ

### Is Claude Haiku 5.5 better than Hy4 preview?

Claude Haiku 5.5 is the stronger model overall, scoring 49.5 to 45.3 on the Noometry Index.

### Which is cheaper, Claude Haiku 5.5 or Hy4 preview?

Claude Haiku 5.5 is cheaper. It lists at $0.10 per million input tokens and $0.50 per million output tokens; Hy4 preview lists at $0.83 and $2.50.

### Is Claude Haiku 5.5 or Hy4 preview better for coding?

Hy4 preview scores higher on coding benchmarks: 51.6 versus 49.2 in the Noometry coding category.

### Which has the bigger context window?

Hy4 preview does, with 1.05M tokens against 1M.

### How many benchmarks do Claude Haiku 5.5 and Hy4 preview share?

2 benchmarks have published results for both models. Claude Haiku 5.5 has 9 scored results on Noometry and Hy4 preview has 3.