# Hy4 preview vs Qwen3.5-Flash

> Hy4 preview is the stronger model overall, scoring 44.6 to 42.3 on the Noometry Index. Qwen3.5-Flash costs 7.1× less per token, which makes it the better buy when Hy4 preview's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/hy4-preview-vs-qwen3-5-flash
- Last updated: 2026-10-10
- Shared benchmarks: 1

## Summary

- They share 1 benchmark with published results for both. Hy4 preview scores higher in 2 categories and Qwen3.5-Flash in 1 category; 3 gaps are clear of the uncertainty.
- The widest gap is in math, where Hy4 preview leads 54.5 to 36.3.
- Qwen3.5-Flash is cheaper at $0.10 / $0.40 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

| | Hy4 preview | Qwen3.5-Flash |
|---|---|---|
| Provider | Tencent | Alibaba (Qwen) |
| Noometry Index | 44.6 | 42.3 |
| Rank | 73 | 105 |
| Context | 1.05M | 1M |
| Input $/M | $0.83 | $0.10 |
| Output $/M | $2.50 | $0.40 |
| Weights | Open | Proprietary |

## Coding

- Hy4 preview: 51.4 (#36)
- Qwen3.5-Flash: 33.9 (#234)

| Benchmark | Hy4 preview | Qwen3.5-Flash |
|---|---|---|
| LMArena WebDev | 1633 | 1243 |
| LMArena Coding | — | 1412 |
| ALE-Bench | — | 221.8 |

## Agentic & Tool Use

- Hy4 preview: —
- Qwen3.5-Flash: —

| Benchmark | Hy4 preview | Qwen3.5-Flash |
|---|---|---|
| Vending-Bench 2 | — | 462.69 |

## Reasoning

- Hy4 preview: 30.6 (#75)
- Qwen3.5-Flash: 32.9 (#63)

| Benchmark | Hy4 preview | Qwen3.5-Flash |
|---|---|---|
| NYT Connections (extended) | 68.2% | — |
| Chess Puzzles | — | 21% |
| LMArena Hard Prompts | — | 1404 |
| Mystery Game Puzzles | — | 20% |
| DTBench | — | 82.9% |
| LMCA | — | 29.1% |
| Epoch Capabilities Index | — | 143.98 |

## Math

- Hy4 preview: 54.5 (#37)
- Qwen3.5-Flash: 36.3 (#117)

| Benchmark | Hy4 preview | Qwen3.5-Flash |
|---|---|---|
| FrontierMath (Tiers 1-3) | — | 18.2% |
| OTIS Mock AIME 2024-2025 | — | 84.4% |
| ProofBench | 75% | — |
| LMArena Math | — | 1407 |
| FrontierMath (Feb 2025 set) | — | 6.2% |
| FrontierMath Tier 4 (v1) | — | 0% |

## Knowledge

- Hy4 preview: —
- Qwen3.5-Flash: 43.2 (#84)

| Benchmark | Hy4 preview | Qwen3.5-Flash |
|---|---|---|
| GPQA Diamond | — | 82.3% |
| SimpleQA Verified | — | 20.3% |
| Vectara Hallucination Rate | — | 10.5% |
| LMArena Expert | — | 1408 |

## Multilingual

- Hy4 preview: —
- Qwen3.5-Flash: 50.7 (#116)

| Benchmark | Hy4 preview | Qwen3.5-Flash |
|---|---|---|
| LMArena Non-English | — | 1385 |
| LMArena Chinese | — | 1446 |
| LMArena French | — | 1412 |
| LMArena German | — | 1389 |
| LMArena Japanese | — | 1369 |
| LMArena Korean | — | 1344 |
| LMArena Russian | — | 1379 |
| LMArena Spanish | — | 1399 |

## Instruction Following

- Hy4 preview: —
- Qwen3.5-Flash: 72.8 (#133)

| Benchmark | Hy4 preview | Qwen3.5-Flash |
|---|---|---|
| LMArena Instruction Following | — | 1374 |

## Long Context

- Hy4 preview: —
- Qwen3.5-Flash: 42.4 (#119)

| Benchmark | Hy4 preview | Qwen3.5-Flash |
|---|---|---|
| LMArena Longer Query | — | 1392 |

## Writing & Preference

- Hy4 preview: —
- Qwen3.5-Flash: 58.2 (#117)

| Benchmark | Hy4 preview | Qwen3.5-Flash |
|---|---|---|
| LMArena Text | — | 1397 |
| LMArena Creative Writing | — | 1343 |
| LMArena Multi-Turn | — | 1393 |

## FAQ

### Is Hy4 preview better than Qwen3.5-Flash?

Hy4 preview is the stronger model overall, scoring 44.6 to 42.3 on the Noometry Index. Qwen3.5-Flash costs 7.1× less per token, which makes it the better buy when Hy4 preview's lead doesn't matter for your workload.

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

Qwen3.5-Flash is cheaper. It lists at $0.10 per million input tokens and $0.40 per million output tokens; Hy4 preview lists at $0.83 and $2.50.

### Is Hy4 preview or Qwen3.5-Flash better for coding?

Hy4 preview scores higher on coding benchmarks: 51.4 versus 33.9 in the Noometry coding category.

### Which has the bigger context window?

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

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

1 benchmark has published results for both models. Hy4 preview has 3 scored results on Noometry and Qwen3.5-Flash has 32.