Gemini 1.5 Flash vs Grok-4 Heavy
Google vs xAI — benchmarks, pricing, and capabilities side by side.
- •Grok-4 Heavy has the higher intelligence index (89.3 vs 61.9)
| Gemini 1.5 Flash | Grok-4 Heavy | |
|---|---|---|
| Intelligence index | 61.9 | 89.3 |
| Developer | xAI | |
| Type | Multimodal | Multimodal |
| Access | API only | API only |
| Context window | 1,048,576 tokens | — |
| Input price | $0.15 / 1M | — |
| Output price | $0.60 / 1M | — |
| Speed | 150 tok/s | — |
| Released | May 1, 2024 | July 9, 2025 |
| Parameters | — | — |
| Input modalities | — | — |
| Output modalities | — | — |
Shared benchmarks
Gemini 1.5 Flash
Grok-4 Heavy
GPQA Diamond
51
88.4
Humanity’s Last Exam
4.2
50.7
LiveCodeBench
27.3
79.4