Grok-4 Heavy vs Seed 1.6
xAI vs ByteDance — benchmarks, pricing, and capabilities side by side.
| Grok-4 Heavy | Seed 1.6 | |
|---|---|---|
| Intelligence index | 89.3 | — |
| Developer | xAI | ByteDance |
| Type | Multimodal | Multimodal |
| Access | API only | API only |
| Context window | — | 262,144 tokens |
| Input price | — | $0.25 / 1M |
| Output price | — | $2.00 / 1M |
| Speed | — | — |
| Released | July 9, 2025 | December 23, 2025 |
| Parameters | — | — |
| Input modalities | — | Image, Text, Video |
| Output modalities | — | Text |