Quickstart

curl https://api.modelstack.cc/v1/chat/completions \
  -H "Authorization: Bearer your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-sonnet-4-5",
    "messages": [
      {"role": "user", "content": "What is ModelStack?"}
    ]
  }'

from openai import OpenAI

client = OpenAI(
    api_key="your_api_key",
    base_url="https://api.modelstack.cc/v1"
)

response = client.chat.completions.create(
    model="claude-sonnet-4-5",
    messages=[
        {"role": "user", "content": "What is ModelStack?"}
    ]
)

print(response.choices[0].message.content)

import OpenAI from "openai";

const client = new OpenAI({
  apiKey: "your_api_key",
  baseURL: "https://api.modelstack.cc/v1",
});

const response = await client.chat.completions.create({
  model: "claude-sonnet-4-5",
  messages: [{ role: "user", content: "What is ModelStack?" }],
});

console.log(response.choices[0].message.content);