Grok-4 Heavy vs MiMo-V2-Omni
xAI vs Xiaomi — benchmarks, pricing, and capabilities side by side.
- •Grok-4 Heavy has the higher intelligence index (89.3 vs 82.8)
| Grok-4 Heavy | MiMo-V2-Omni | |
|---|---|---|
| Intelligence index | 89.3 | 82.8 |
| Developer | xAI | Xiaomi |
| Type | Multimodal | Multimodal |
| Access | API only | API only |
| Context window | — | 262,144 tokens |
| Input price | — | $0.40 / 1M |
| Output price | — | $2.00 / 1M |
| Speed | — | 108 tok/s |
| Released | July 9, 2025 | March 18, 2026 |
| Parameters | — | — |
| Input modalities | — | Text, Audio, Image, Video |
| Output modalities | — | Text |
Shared benchmarks
Grok-4 Heavy
MiMo-V2-Omni
GPQA Diamond
88.4
82.8
Humanity’s Last Exam
50.7
19.9