Grok-4 Heavy vs Nova 2 Lite
xAI vs Amazon — benchmarks, pricing, and capabilities side by side.
- •Grok-4 Heavy has the higher intelligence index (89.3 vs 82.1)
| Grok-4 Heavy | Nova 2 Lite | |
|---|---|---|
| Intelligence index | 89.3 | 82.1 |
| Developer | xAI | Amazon |
| Type | Multimodal | Multimodal |
| Access | API only | API only |
| Context window | — | 1,000,000 tokens |
| Input price | — | $0.30 / 1M |
| Output price | — | $2.50 / 1M |
| Speed | — | 229 tok/s |
| Released | July 9, 2025 | December 2, 2025 |
| Parameters | — | — |
| Input modalities | — | Text, Image, Video |
| Output modalities | — | Text |
Shared benchmarks
Grok-4 Heavy
Nova 2 Lite
AIME 2025
100
94.3
GPQA Diamond
88.4
81.1
Humanity’s Last Exam
50.7
10.9
LiveCodeBench
79.4
71.1