xAI API pricing
Grok 4.3 pricing
Input / 1M tokens
$1.25
Output / 1M tokens
$2.50
Cached input / 1M
$0.20
Prompts over 199,999 tokens cost $2.50 in and $5 out per million, for the whole request.
Source: xAI pricing, checked 1 Nov 2026. API name: grok-4.3.
What a prompt costs on Grok 4.3
| Example | Tokens in / out | Cost | 1,000 a day, per month |
|---|---|---|---|
| A short question and answer | 50 / 300 | $0.0008 | $24.38 |
| A one-page document summarised | 700 / 400 | $0.0019 | $56.25 |
| A 300-line code file reviewed | 4,000 / 1,200 | $0.0080 | $240.00 |
| A 50-page report summarised | 35,000 / 1,500 | $0.048 | $1,425 |
Token sizes are typical, not exact. Replies include any thinking the model does.
Other Grok models
FAQ
How much does Grok 4.3 cost?
$1.25 per million input tokens and $2.50 per million output tokens on xAI's standard API tier, and $0.20 per million for cached input. Checked 1 Nov 2026.
What does one prompt cost on Grok 4.3?
A 1,000-token prompt with a typical medium-length reply costs about $0.0033. Paste your own prompt into the calculator for an exact figure.