# GPT-5 Pro vs Hy4 preview

> GPT-5 Pro is the stronger model overall, scoring 46.4 to 45.3 on the Noometry Index. Hy4 preview costs 33× less per token, which makes it the better buy when GPT-5 Pro's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/gpt-5-pro-vs-hy4-preview
- Last updated: 2026-10-11
- Shared benchmarks: 0

## Summary

- The widest gap is in coding, where Hy4 preview leads 51.6 to 44.0.
- Hy4 preview is cheaper at $0.83 / $2.50 per million input/output tokens, against $15 / $120 for GPT-5 Pro.
- Hy4 preview accepts more context: 1.05M tokens versus 400K.
- Hy4 preview has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-5 Pro | Hy4 preview |
|---|---|---|
| Provider | OpenAI | Tencent |
| Noometry Index | 46.4 | 45.3 |
| Rank | 64 | 73 |
| Context | 400K | 1.05M |
| Input $/M | $15 | $0.83 |
| Output $/M | $120 | $2.50 |
| Weights | Proprietary | Open |

## Coding

- GPT-5 Pro: 44.0 (#80)
- Hy4 preview: 51.6 (#38)

| Benchmark | GPT-5 Pro | Hy4 preview |
|---|---|---|
| LMArena WebDev | — | 1632 |
| WeirdML | 60.4% | — |
| AlgoTune | 1.31 | — |

## Reasoning

- GPT-5 Pro: 38.9 (#62)
- Hy4 preview: 31.9 (#79)

| Benchmark | GPT-5 Pro | Hy4 preview |
|---|---|---|
| ARC-AGI-2 | 18.3% | — |
| SimpleBench | 61.6% | — |
| Kagi LLM Benchmark | 76.8% | — |
| NYT Connections (extended) | — | 68.2% |
| ARC-AGI-1 | 70.2% | — |
| EnigmaEval | 18.8% | — |
| Epoch Capabilities Index | 150.28 | — |

## Math

- GPT-5 Pro: 48.5 (#63)
- Hy4 preview: 55.7 (#42)

| Benchmark | GPT-5 Pro | Hy4 preview |
|---|---|---|
| FrontierMath (Tiers 1-3) | 55.8% | — |
| FrontierMath Tier 4 | 19.5% | — |
| ProofBench | — | 75% |
| FrontierMath Tier 4 (v1) | 14.6% | — |

## Knowledge

- GPT-5 Pro: 56.7 (#42)
- Hy4 preview: —

| Benchmark | GPT-5 Pro | Hy4 preview |
|---|---|---|
| Humanity's Last Exam | 31.6% | — |

## FAQ

### Is GPT-5 Pro better than Hy4 preview?

GPT-5 Pro is the stronger model overall, scoring 46.4 to 45.3 on the Noometry Index. Hy4 preview costs 33× less per token, which makes it the better buy when GPT-5 Pro's lead doesn't matter for your workload.

### Which is cheaper, GPT-5 Pro or Hy4 preview?

Hy4 preview is cheaper. It lists at $0.83 per million input tokens and $2.50 per million output tokens; GPT-5 Pro lists at $15 and $120.

### Is GPT-5 Pro or Hy4 preview better for coding?

Hy4 preview scores higher on coding benchmarks: 51.6 versus 44.0 in the Noometry coding category.

### Which has the bigger context window?

Hy4 preview does, with 1.05M tokens against 400K.

### How many benchmarks do GPT-5 Pro and Hy4 preview share?

0 benchmarks have published results for both models. GPT-5 Pro has 12 scored results on Noometry and Hy4 preview has 3.