Grok-4 Heavy vs o1-pro
xAI vs OpenAI — benchmarks, pricing, and capabilities side by side.
- •Grok-4 Heavy has the higher intelligence index (89.3 vs 82.5)
| Grok-4 Heavy | o1-pro | |
|---|---|---|
| Intelligence index | 89.3 | 82.5 |
| Developer | xAI | OpenAI |
| Type | Multimodal | Multimodal |
| Access | API only | API only |
| Context window | — | 200,000 tokens |
| Input price | — | $150.00 / 1M |
| Output price | — | $600.00 / 1M |
| Speed | — | — |
| Released | July 9, 2025 | March 19, 2025 |
| Parameters | — | — |
| Input modalities | — | Text, Image |
| Output modalities | — | Text |
Shared benchmarks
Grok-4 Heavy
o1-pro
GPQA Diamond
88.4
79