Grok 4.1 Fast API

US xAI

Try in Playground → Get API key

Grok 4.1 Fast is a fast, cost-efficient model from xAI. Available through the MeshTok unified API.

ImageFastTool Use

Pricing (official list, per 1M tokens)

Input

$0.20/M

Output

$0.50/M

Specifications

Context window2000K tokens Input modalitiesImage StreamingYes APIOpenAI-compatible

How to use Grok 4.1 Fast

Drop-in OpenAI replacement. Change only the base_url and model.

# Python -pip install openai
from openai import OpenAI

client = OpenAI(
    base_url="https://meshtok.com/v1",
    api_key="sk-your-MeshTok-key",
)

resp = client.chat.completions.create(
    model="x-ai/grok-4.1-fast",
    messages=[{"role":"user","content":"Hello!"}],
)
print(resp.choices[0].message.content)

# cURL
curl https://meshtok.com/v1/chat/completions \
  -H "Authorization: Bearer sk-your-MeshTok-key" \
  -H "Content-Type: application/json" \
  -d '{"model":"x-ai/grok-4.1-fast","messages":[{"role":"user","content":"Hello!"}]}'