# Hy4 preview vs Qwen3.5 Plus

> Hy4 preview is the stronger model overall, scoring 45.3 to 42.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/hy4-preview-vs-qwen3-5-plus
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in math, where Hy4 preview leads 55.7 to 49.6.
- Qwen3.5 Plus is cheaper at $0.40 / $2.40 per million input/output tokens, against $0.75 / $2.25 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

| | Hy4 preview | Qwen3.5 Plus |
|---|---|---|
| Provider | Tencent | Alibaba (Qwen) |
| Noometry Index | 45.3 | 42.9 |
| Rank | 73 | 106 |
| Context | 1.05M | 1M |
| Input $/M | $0.75 | $0.40 |
| Output $/M | $2.25 | $2.40 |
| Weights | Open | Proprietary |

## Coding

- Hy4 preview: 51.6 (#38)
- Qwen3.5 Plus: —

| Benchmark | Hy4 preview | Qwen3.5 Plus |
|---|---|---|
| LMArena WebDev | 1632 | — |
| ALE-Bench | — | 621.92 |

## Agentic & Tool Use

- Hy4 preview: —
- Qwen3.5 Plus: —

| Benchmark | Hy4 preview | Qwen3.5 Plus |
|---|---|---|
| Vending-Bench 2 | — | 0.54 |

## Reasoning

- Hy4 preview: 31.9 (#79)
- Qwen3.5 Plus: 32.8 (#74)

| Benchmark | Hy4 preview | Qwen3.5 Plus |
|---|---|---|
| NYT Connections (extended) | 68.2% | — |
| Chess Puzzles | — | 22% |
| Mystery Game Puzzles | — | 17% |
| DTBench | — | 80.5% |
| LMCA | — | 36.4% |
| Epoch Capabilities Index | — | 146.78 |

## Math

- Hy4 preview: 55.7 (#42)
- Qwen3.5 Plus: 49.6 (#61)

| Benchmark | Hy4 preview | Qwen3.5 Plus |
|---|---|---|
| OTIS Mock AIME 2024-2025 | — | 86.7% |
| ProofBench | 75% | — |
| FrontierMath (Feb 2025 set) | — | 21% |
| FrontierMath Tier 4 (v1) | — | 2.1% |

## Knowledge

- Hy4 preview: —
- Qwen3.5 Plus: 46.0 (#83)

| Benchmark | Hy4 preview | Qwen3.5 Plus |
|---|---|---|
| GPQA Diamond | — | 84.8% |
| SimpleQA Verified | — | 25.4% |
| Vectara Hallucination Rate | — | 10.7% |

## Long Context

- Hy4 preview: —
- Qwen3.5 Plus: 43.0 (#113)

| Benchmark | Hy4 preview | Qwen3.5 Plus |
|---|---|---|
| CL-bench | — | 19.8% |
| CL-bench Life | — | 12.4% |

## FAQ

### Is Hy4 preview better than Qwen3.5 Plus?

Hy4 preview is the stronger model overall, scoring 45.3 to 42.9 on the Noometry Index.

### Which is cheaper, Hy4 preview or Qwen3.5 Plus?

Qwen3.5 Plus is cheaper. It lists at $0.40 per million input tokens and $2.40 per million output tokens; Hy4 preview lists at $0.75 and $2.25.

### Which has the bigger context window?

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

### How many benchmarks do Hy4 preview and Qwen3.5 Plus share?

0 benchmarks have published results for both models. Hy4 preview has 3 scored results on Noometry and Qwen3.5 Plus has 15.