Nova Premier vs Grok 4.3
Detailed comparison of API pricing, technical specifications, and benchmark scores. Updated 2026-07-04.
Cost at a Glance
Nova Premier is 3.3× more expensive than Grok 4.3 — switching could save 70% on your monthly API bill.
At 5M input + 2M output tokens per month:
Choosing Grok 4.3 could save you $26.25/mo
Price Comparison (per 1M tokens)
| Metric | Nova Premier | Grok 4.3 |
|---|---|---|
| Input (per 1M tokens) | $2.50 | $1.25 |
| Output (per 1M tokens) | $12.50 | $2.50 |
| Cache Write (per 1M tokens) | — | — |
| Cache Read (per 1M tokens) | $0.63 | $0.20 |
| Batch Input (per 1M tokens) | — | — |
| Batch Output (per 1M tokens) | — | — |
Prices are per 1 million tokens. Actual costs depend on your monthly token volume. Use the calculator →
Specifications
| Spec | Nova Premier | Grok 4.3 |
|---|---|---|
| Context Window | 1M | 1M |
| Max Output Tokens | 32K | 128K |
| Knowledge Cutoff | 2025-10 | 2026-04 |
| Modalities | Text, Image | Text, Image, Video |
| Prompt Caching | Yes | Yes |
| Batch API | No | No |
| Thinking / Reasoning | No | Yes |
Benchmark Scores
| Benchmark | Nova Premier | Grok 4.3 |
|---|---|---|
| SWE-bench Verified | — | 73.0 |
| MMLU-Pro | 73.3 | 83.5 |
| HumanEval | — | 91.2 |
Benchmark scores from official provider reports. Higher is better. Missing scores indicate the provider has not published that benchmark yet.
Use Cases
Nova Premier
Grok 4.3
About the Providers
Nova Premier is developed by Amazon. Grok 4.3 is developed by xAI. This is a cross-provider comparison between Amazon and xAI models. For the most up-to-date pricing, always check the official API documentation from each provider.