Grok-4 Heavy vs Kimi-k1.5
xAI vs Moonshot AI — benchmarks, pricing, and capabilities side by side.
- •Grok-4 Heavy has the higher intelligence index (89.3 vs 82.2)
| Grok-4 Heavy | Kimi-k1.5 | |
|---|---|---|
| Intelligence index | 89.3 | 82.2 |
| Developer | xAI | Moonshot AI |
| Type | Multimodal | Multimodal |
| Access | API only | API only |
| Context window | — | — |
| Input price | — | — |
| Output price | — | — |
| Speed | — | — |
| Released | July 9, 2025 | January 20, 2025 |
| Parameters | — | — |
| Input modalities | — | — |
| Output modalities | — | — |