Building a Powerful Chatbot with GPT4All and LangChain: A Step-by-Step Tutorial

Ayyaz Zafar
7 min readApr 26, 2024

Introduction: Hello everyone! In this blog post, we will embark on an exciting journey to build a powerful chatbot using GPT4All and Langchain. By following the steps outlined in this tutorial, you’ll learn how to integrate GPT4All, an open-source language model, with Langchain to create a chatbot capable of answering questions based on a custom knowledge base. We’ll also explore how to enhance the chatbot with embeddings and create a user-friendly interface using Streamlit.

Step 1: Setting Up the Project and Installing Dependencies To get started, let’s create a new directory for our project and navigate to it in the terminal:

mkdir gpt4all-chatbot
cd gpt4all-chatbot

Next, create a virtual environment to keep our project’s dependencies isolated. You can use the following command:

pipenv shell

Now, let’s install the required dependencies using pip:

pipenv install langchain langchain_core langchain_community streamlit…