xAI (Grok)
Grok 4.3
Lower-cost Grok with a 1M-token context. Short-context (<200K input) rate; at or above 200K it is $2.50 input / $5 output.
USD per 1M output tokens
$2.50
- input
- $1.25
- output
- $2.50
#7 cheapest of 25 in Large language models
Official pricing ↗Capabilities, explained
What this API can do, and what each capability means for your project.
Input price
$1.25
Cost of the text, images and files you send to the model.
Context window
1,000K tokens
How much text the model can read at once. 200K tokens ≈ a 500-page book.
Max output
—
Longest single response the model can write.
Input types
text, image
What kinds of input the model understands besides text.
Tool use / function calling
Yes
The model can request calls to your functions/APIs with structured arguments, the basis of agents.
Guaranteed JSON output
Yes
The API can force the response to match a JSON schema you provide.
Extended reasoning
Yes
The model can 'think' step by step before answering, improving hard math/coding at extra cost and latency.
Open weights
No
The model weights are downloadable, so you can self-host it or switch hosting providers without changing models.
Typical latency
—
How long until the first useful output arrives. Lower is better for interactive apps; batch jobs rarely care.
Price history
Only one price recorded so far. The chart appears once the price changes.