Model comparison
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 37× less per token, which makes it the better buy when GPT-5 Pro's lead doesn't matter for your workload.
Last verified . 0 shared benchmarks.
TencentSummary
- The widest gap is in coding, where Hy4 preview leads 51.6 to 44.0.
- Hy4 preview is cheaper at $0.75 / $2.25 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.
Side by side
| GPT-5 Pro | Hy4 preview | |
|---|---|---|
| Provider | OpenAI | Tencent |
| Noometry Index | 46.4 | 45.3 |
| Released | 2025-10-06 | 2026-08-28 |
| Weights | Proprietary | Open |
| Context window | 400K | 1.05M |
| Max output | 272K | 64K |
| Input $ / M tokens | $15 | $0.75 |
| Output $ / M tokens | $120 | $2.25 |
| Results tracked | 12 | 3 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Hy4 preview leads
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 leads
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 Hy4 preview leads
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 Not comparable
GPT-5 Pro: 56.7 (#42), Hy4 preview: —
| Benchmark | GPT-5 Pro | Hy4 preview |
|---|---|---|
| Humanity's Last Exam | 31.6% | — |
Frequently asked questions
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 37× 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 $0.75 per million input tokens and $2.25 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.