GPT-4.1 Nano 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 42.1)
| GPT-4.1 Nano | Grok-4 Heavy | |
|---|---|---|
| Intelligence index | 42.1 | 89.3 |
| Developer | OpenAI | xAI |
| Type | Multimodal | Multimodal |
| Access | API only | API only |
| Context window | 1,047,576 tokens | — |
| Input price | $0.10 / 1M | — |
| Output price | $0.40 / 1M | — |
| Speed | 200 tok/s | — |
| Released | April 14, 2025 | July 9, 2025 |
| Parameters | — | — |
| Input modalities | Image, Text | — |
| Output modalities | Text | — |
Shared benchmarks
GPT-4.1 Nano
Grok-4 Heavy
AIME 2025
24
100
GPQA Diamond
50.3
88.4
Humanity’s Last Exam
3.9
50.7
LiveCodeBench
32.6
79.4