x-ai
xAI: Grok 4.1 Fast
x-ai/grok-4.1-fast
For $1, you can send approximately:
~204messages
How do we get this number?
One message = ~7,000 input tokens + ~7,000 output tokens
Input cost per message7,000 x $0.20/M = $0.001400
Output cost per message7,000 x $0.50/M = $0.003500
Total cost per message$0.004900
Messages for $1204.08
Context window
2.0M
tokens
Max response
30k
tokens
Input price
$0.20
per million tokens
Output price
$0.50
per million tokens
Modalities
Input:textInput:imageInput:fileOutput:text
Description
Grok 4.1 Fast is xAI's best agentic tool calling model that shines in real-world use cases like customer support and deep research. 2M context window. Reasoning can be enabled/disabled using...