Grok-1.5 vs Grok 4.3
xAI vs xAI — benchmarks, pricing, and capabilities side by side.
- •Grok 4.3 has the higher intelligence index (90.1 vs 50.3)
| Grok-1.5 | Grok 4.3 | |
|---|---|---|
| Intelligence index | 50.3 | 90.1 |
| Developer | xAI | xAI |
| Type | LLM | LLM |
| Access | API only | API only |
| Context window | — | 1,000,000 tokens |
| Input price | — | $1.25 / 1M |
| Output price | — | $2.50 / 1M |
| Speed | — | 88 tok/s |
| Released | March 28, 2024 | May 6, 2026 |
| Parameters | — | — |
| Input modalities | — | Text, Image |
| Output modalities | — | Text |
Shared benchmarks
Grok-1.5
Grok 4.3
GPQA Diamond
35.9
90.1