Grok-4 Heavy vs Ministral 3 8B
xAI vs Mistral AI — benchmarks, pricing, and capabilities side by side.
- •Grok-4 Heavy has the higher intelligence index (89.3 vs 43.3)
| Grok-4 Heavy | Ministral 3 8B | |
|---|---|---|
| Intelligence index | 89.3 | 43.3 |
| Developer | xAI | Mistral AI |
| Type | Multimodal | Multimodal |
| Access | API only | Open weights |
| Context window | — | 262,144 tokens |
| Input price | — | $0.15 / 1M |
| Output price | — | $0.15 / 1M |
| Speed | — | 86 tok/s |
| Released | July 9, 2025 | December 2, 2025 |
| Parameters | — | — |
| Input modalities | — | Text, Image |
| Output modalities | — | Text |
Shared benchmarks
Grok-4 Heavy
Ministral 3 8B
AIME 2025
100
31.7
GPQA Diamond
88.4
47.1
Humanity’s Last Exam
50.7
4.3
LiveCodeBench
79.4
30.3