ChatBox Tutorial

ChatBox is a free, cross-platform AI client supporting Windows, Mac, Linux, iOS, and Android. It features a clean interface and powerful functionality.

Download and Installation

Go to ChatBox GitHub to download the latest version:

• Windows → .exe
• macOS → .dmg
• Linux → .AppImage

Configuration Steps

1. Open Settings

After launching ChatBox for the first time, click the settings icon to enter the configuration page.

2. Select API Provider

Choose OpenAI API or Custom API.

3. Fill in Configuration Information

• API Key: Enter the Key you obtained from Fast-API

  sk-yourAPIKey

• API Base URL: Enter one of the following addresses (if one does not work, try another)

  https://fast-api.org
  https://fast-api.org/v1
  https://fast-api.org/v1/chat/completions

4. Save and Use

Click save, return to the main page, and create a new conversation to use.

Using the Claude Model

1. In settings, select Anthropic API or Custom API
2. Fill the API Base URL with: https://fast-api.org/v1
3. Add a model, set model ID to something like claude-sonnet-4-6
4. After saving, create a new chat to use it

Frequently Asked Questions

Connection Failed?

• Check if your API Key is correct
• Try switching between the three formats of Base URL
• Check your network connection

Model List is Empty?

• Manually add a model; model IDs can be found on the platform's model pricing page
• Make sure your account has sufficient balance