Grok-4 Heavy vs Phi-3.5-vision-instruct
xAI vs Microsoft — benchmarks, pricing, and capabilities side by side.
- •Grok-4 Heavy has the higher intelligence index (89.3 vs 61.7)
| Grok-4 Heavy | Phi-3.5-vision-instruct | |
|---|---|---|
| Intelligence index | 89.3 | 61.7 |
| Developer | xAI | Microsoft |
| Type | Multimodal | Multimodal |
| Access | API only | Open weights |
| Context window | — | — |
| Input price | — | — |
| Output price | — | — |
| Speed | — | — |
| Released | July 9, 2025 | August 23, 2024 |
| Parameters | — | 4200000000 |
| Input modalities | — | — |
| Output modalities | — | — |