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

# Overview

> Learn about the Knowledge Base and how it works.

<img src="https://chatling-assets.b-cdn.net/knowledge-base.png" />

The Knowledge Base is where you upload information that the AI uses to generate responses to user queries. You can add [data sources](/knowledge-base/data-source-types) such as websites, webpages, documents, texts, and FAQs to the knowledge base.

When a user asks a question, the AI searches the Knowledge Base for all relevant information and returns the best answer based on the data it finds.

If your chatbot contains an AI Response block and it's "Response Source" is set to "Knowledge Base", it's essential to populate the knowledge base with information that the AI can use to generate responses.