Gemma 4 31B 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 85.7)
| Gemma 4 31B | Grok-4 Heavy | |
|---|---|---|
| Intelligence index | 85.7 | 89.3 |
| Developer | xAI | |
| Type | Multimodal | Multimodal |
| Access | Open weights | API only |
| Context window | 262,144 tokens | — |
| Input price | $0.12 / 1M | — |
| Output price | $0.37 / 1M | — |
| Speed | 36 tok/s | — |
| Released | April 2, 2026 | July 9, 2025 |
| Parameters | — | — |
| Input modalities | Image, Text, Video | — |
| Output modalities | Text | — |
Shared benchmarks
Gemma 4 31B
Grok-4 Heavy
GPQA Diamond
85.7
88.4
Humanity’s Last Exam
22.7
50.7