Developer documentation

OpenAI-compatible integration

Use your Varion API key as the client API key and replace the OpenAI base URL.

Python

from openai import OpenAI

client = OpenAI(
    api_key="YOUR_VARION_KEY",
    base_url="https://api.varion.tech/v1",
)

response = client.chat.completions.create(
    model="gpt-5-mini",
    messages=[{"role":"user","content":"Hello"}],
)

Node.js

import OpenAI from "openai";

const client = new OpenAI({
  apiKey: "YOUR_VARION_KEY",
  baseURL: "https://api.varion.tech/v1",
});

Supported endpoints

Endpoint	Status
`POST /v1/chat/completions`	Supported
`POST /v1/responses`	Supported
`GET /v1/models`	Supported

Optional headers

X-Varion-Optimize: off
X-Varion-Cache: off
X-Upstream-API-Key: sk-...

Developer downloads

Python helper Node.js helper Postman collection

Free tests run locally. Provider keys stay on the customer’s computer and are never entered into the Varion website.