Model comparison
Hy4 preview vs Qwen3.5 Plus
Hy4 preview is the stronger model overall, scoring 45.3 to 42.9 on the Noometry Index.
Last verified . 0 shared benchmarks.
Tencent
Alibaba (Qwen)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.
Side by side
| Hy4 preview | Qwen3.5 Plus | |
|---|---|---|
| Provider | Tencent | Alibaba (Qwen) |
| Noometry Index | 45.3 | 42.9 |
| Released | 2026-08-28 | 2026-02-16 |
| Weights | Open | Proprietary |
| Context window | 1.05M | 1M |
| Max output | 64K | 66K |
| Input $ / M tokens | $0.75 | $0.40 |
| Output $ / M tokens | $2.25 | $2.40 |
| Results tracked | 3 | 15 |
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Category by category
Coding Not comparable
Hy4 preview: 51.6 (#38), Qwen3.5 Plus: —
| Benchmark | Hy4 preview | Qwen3.5 Plus |
|---|---|---|
| LMArena WebDev | 1632 | — |
| ALE-Bench | — | 621.92 |
Agentic & Tool Use Not comparable
Hy4 preview: —, Qwen3.5 Plus: —
| Benchmark | Hy4 preview | Qwen3.5 Plus |
|---|---|---|
| Vending-Bench 2 | — | 0.54 |
Reasoning Too close to call
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 leads
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 Not comparable
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 Not comparable
Hy4 preview: —, Qwen3.5 Plus: 43.0 (#113)
| Benchmark | Hy4 preview | Qwen3.5 Plus |
|---|---|---|
| CL-bench | — | 19.8% |
| CL-bench Life | — | 12.4% |
Frequently asked questions
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.