Grok 4.3 vs Nova Premier
xAI vs Amazon — benchmarks, pricing, and capabilities side by side.
- •Grok 4.3 has the higher intelligence index (90.1 vs 53.1)
- •Grok 4.3 is cheaper ($1.25 vs $2.50 per 1M input)
- •Grok 4.3 is faster
| Grok 4.3 | Nova Premier | |
|---|---|---|
| Intelligence index | 90.1 | 53.1 |
| Developer | xAI | Amazon |
| Type | LLM | LLM |
| Access | API only | — |
| Context window | 1,000,000 tokens | — |
| Input price | $1.25 / 1M | $2.50 / 1M |
| Output price | $2.50 / 1M | $12.50 / 1M |
| Speed | 88 tok/s | 40 tok/s |
| Released | May 6, 2026 | April 30, 2025 |
| Parameters | — | — |
| Input modalities | Text, Image | — |
| Output modalities | Text | — |
Shared benchmarks
Grok 4.3
Nova Premier
GPQA Diamond
90.1
56.9
Humanity’s Last Exam
35
4.7