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Documentation Index

Fetch the complete documentation index at: https://docs.llmrouter.app/llms.txt Use this file to discover all available pages before exploring further.

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Chatbox & LLM Router

Chatbox is a popular, cross-platform desktop AI assistant (available for macOS, Windows, and Linux). It allows you to chat with multiple AI models from a single interface. Because desktop chat applications tend to accumulate extremely long conversation histories, they quickly become expensive to operate. By connecting Chatbox to LLM Router, you automatically apply Chat History Optimization to your long threads, dropping irrelevant old messages and saving you massive amounts of input tokens.

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Step 1: Create an LLM Router API Key

Before configuring Chatbox, you need an API key from LLM Router:
  1. Log into the LLM Router Dashboard.
  2. Navigate to the API Keys section.
  3. Generate a new key and copy it (e.g., sk-router-...).

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Step 2: Install Chatbox

If you haven’t already, download and install Chatbox for your operating system.

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Step 3: Configure LLM Router in Chatbox

Chatbox natively supports custom OpenAI-compatible providers. We will configure it to point all traffic to LLM Router.
1

Open Settings

Launch Chatbox and open the Settings menu (usually a gear icon in the bottom left).
2

Add a Custom Provider

Navigate to the Model Provider tab. Click Add and select the OpenAI API Compatible option.
3

Enter API Details

Fill in the connection details for LLM Router: * API Host: Enter https://api.llmrouter.app/v1 (Make sure to include /v1). * API Path: Leave this field empty. * API Key: Paste your sk-router-... key here.
4

Validate and Fetch Models

  1. Click the Check button next to the API Key field to validate your connection.
  2. Click Fetch to retrieve the list of available models from LLM Router.
Model Selection: Because LLM Router acts as a universal gateway, the fetched models will be prefixed with their provider slug (e.g., anthropic/claude-3-5-sonnet or openai/gpt-4o).