GPT-5 Pro vs o1-preview
OpenAI vs OpenAI — benchmarks, pricing, and capabilities side by side.
- •GPT-5 Pro has the higher intelligence index (88.4 vs 57.3)
- •GPT-5 Pro has a larger context window (400K)
| GPT-5 Pro | o1-preview | |
|---|---|---|
| Intelligence index | 88.4 | 57.3 |
| Developer | OpenAI | OpenAI |
| Type | LLM | LLM |
| Access | API only | API only |
| Context window | 400,000 tokens | 128,000 tokens |
| Input price | $15.00 / 1M | $15.00 / 1M |
| Output price | $120.00 / 1M | $60.00 / 1M |
| Speed | — | 66 tok/s |
| Released | October 6, 2025 | September 12, 2024 |
| Parameters | — | — |
| Input modalities | Text, Image | — |
| Output modalities | Text | — |
Shared benchmarks
GPT-5 Pro
o1-preview
GPQA Diamond
88.4
73.3