GPT-4o-mini vs Grok-4 Heavy
OpenAI vs xAI — benchmarks, pricing, and capabilities side by side.
- •Grok-4 Heavy has the higher intelligence index (89.3 vs 49.1)
| GPT-4o-mini | Grok-4 Heavy | |
|---|---|---|
| Intelligence index | 49.1 | 89.3 |
| Developer | OpenAI | xAI |
| Type | Multimodal | Multimodal |
| Access | API only | API only |
| Context window | 128,000 tokens | — |
| Input price | $0.15 / 1M | — |
| Output price | $0.60 / 1M | — |
| Speed | 92 tok/s | — |
| Released | July 18, 2024 | July 9, 2025 |
| Parameters | — | — |
| Input modalities | Text, Image | — |
| Output modalities | Text | — |
Shared benchmarks
GPT-4o-mini
Grok-4 Heavy
AIME 2025
14.7
100
GPQA Diamond
40.2
88.4
Humanity’s Last Exam
4
50.7
LiveCodeBench
23.4
79.4