Gemini 3.1 Flash Lite 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 82.2)
| Gemini 3.1 Flash Lite | Grok-4 Heavy | |
|---|---|---|
| Intelligence index | 82.2 | 89.3 |
| Developer | xAI | |
| Type | Multimodal | Multimodal |
| Access | API only | API only |
| Context window | 1,048,576 tokens | — |
| Input price | $0.25 / 1M | — |
| Output price | $1.50 / 1M | — |
| Speed | 342 tok/s | — |
| Released | May 7, 2026 | July 9, 2025 |
| Parameters | — | — |
| Input modalities | Text, Image, Video, Audio | — |
| Output modalities | Text | — |
Shared benchmarks
Gemini 3.1 Flash Lite
Grok-4 Heavy
GPQA Diamond
82.2
88.4
Humanity’s Last Exam
16.2
50.7