How to use xAI's Grok Code Fast 1 API for free
xAI’s Grok Code Fast (which was called Sonic in stealth mode) is model that is specifically built for autonomous development (coding)
With Vercel’s AI Gateway free credit of $5 per month (if you haven’t bought any paid credit in that account).
We can use that model for free using that credit.
How to get started?
Get your API key for AI Gateway from your Vercel Dashboard.
Once you have the key, you can set the base URL and API key in an SDK that supports OpenAI, or you can directly interact with it via cURL.
| Setting | Value | Notes |
|---|---|---|
| baseURL | https://ai-gateway.vercel.sh/v1 | Use this as the API base URL |
| apiKey | $AI_GATEWAY_API_KEY | Replace AI_GATEWAY_API_KEY with your actual key |
Example
cURL
curl -X POST "https://ai-gateway.vercel.sh/v1/chat/completions" \
-H "Authorization: Bearer $AI_GATEWAY_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "xai/grok-code-fast-1",
"messages": [
{
"role": "user",
"content": "Why is the sky blue?"
}
],
"stream": false
}'
OpenAI SDK
import os
from openai import OpenAI
client = OpenAI(
api_key=os.getenv('AI_GATEWAY_API_KEY'),
base_url='https://ai-gateway.vercel.sh/v1'
)
response = client.chat.completions.create(
model='xai/grok-code-fast-1',
messages=[
{
'role': 'user',
'content': 'Why is the sky blue?'
}
]
)
Reference
https://docs.x.ai/docs/models/grok-code-fast-1
Happy building-with AI!
