> ## Documentation Index
> Fetch the complete documentation index at: https://docs.crazyrouter.com/llms.txt
> Use this file to discover all available pages before exploring further.

# ChatGPT Sidebar Setup Guide

> Configure Crazyrouter API in the ChatGPT Sidebar browser extension with the latest verified models

> Last updated: 2026-06-06

## Overview

ChatGPT Sidebar is a browser sidebar AI assistant extension suited for quick Q\&A, translation, summarization, and webpage reading help on any site. When connecting it to Crazyrouter, use its `Custom API` or `OpenAI` entry first and validate the route with a production-verified model before expanding the setup.

## Configuration Steps

<Steps>
  <Step title="Install Extension">
    Install ChatGPT Sidebar from the Chrome Web Store.
  </Step>

  <Step title="Open Settings">
    Click the extension icon and go to `Settings`.
  </Step>

  <Step title="Configure API">
    * **API Provider**: Select `Custom API` or `OpenAI`
    * **API URL**: `https://api.crazyrouter.com/v1`
    * **API Key**: `sk-xxx`
    * **Model**: `gpt-5.5`
  </Step>

  <Step title="Save">
    Save settings. Click the extension icon on any web page to start using it.
  </Step>
</Steps>

## Recommended Models

| Scenario                             | Model             |
| ------------------------------------ | ----------------- |
| First-pass route validation          | `gpt-5.5`         |
| Higher-quality long-form explanation | `claude-opus-4-8` |
| Gemini fallback path                 | `gemini-3.1-pro`  |

<Note>
  `gpt-5.5` was verified successfully in Crazyrouter production on March 23, 2026, and is the best OpenAI-compatible baseline for this browser-extension path.
</Note>