Gemini 3 Pro vs Grok-4 Heavy
Google vs xAI — benchmarks, pricing, and capabilities side by side.
- •Grok-4 Heavy has the higher intelligence index (89.3 vs 82.8)
| Gemini 3 Pro | Grok-4 Heavy | |
|---|---|---|
| Intelligence index | 82.8 | 89.3 |
| Developer | xAI | |
| Type | Multimodal | Multimodal |
| Access | API only | API only |
| Context window | 1,000,000 tokens | — |
| Input price | $2.00 / 1M | — |
| Output price | $12.00 / 1M | — |
| Speed | 141 tok/s | — |
| Released | November 18, 2025 | July 9, 2025 |
| Parameters | — | — |
| Input modalities | Text, Image, Audio, Video | — |
| Output modalities | Text | — |
Shared benchmarks
Gemini 3 Pro
Grok-4 Heavy
AIME 2025
95.7
100
GPQA Diamond
91.9
88.4
Humanity’s Last Exam
37.5
50.7
LiveCodeBench
91.7
79.4