AI Chat App

Introduction

The AI Chat App is a Node.js application that integrates OpenAI's GPT-3.5 Turbo model. It offers an interactive platform for AI-based chat, search, and question-answer functionalities. This application is designed to showcase the integration of various AI tools and APIs in a single, cohesive project.

Getting Started

Prerequisites

Before beginning, make sure you have:

• An API key from OpenAI. Go to OpenAI Platform to get your key. You'll receive a $5 credit, and token usage is generally very low.
• Node.js installed on your system, as it's essential for running the application.

Environment Setup

Follow these steps to set up your development environment:

1. Install dotenv, which helps in managing environment variables and keeps your API key secure:

npm i dotenv

2. Istall the OpenAI package to enable chat functionalities within your app:

npm i openai

3. To enhance your app's search capabilities, install langchain:

npm i langchain

4. For the QA feature, you'll need additional libraries like pdf-parse and YouTube transcript APIs:

npm i pdf-parse youtube-transcript-api youtubei.js

Sources for QA

Use xbox.pdf and OpenAI video transcripts as sources for the QA functionality.

Main Logic

#The application's core functionalities include:

-Loading a combined memory vector store for data handling. -Performing semantic similarity searches using the questions provided. -Integrating with OpenAI's GPT-3.5 Turbo model to generate answers from the search results. -Displaying AI-generated answers, alongside sources from YouTube videos or PDF documents.

Usage

Chat Bot

To use the chat bot:

1. Insert your questions in index.js.
2. Run the script node index.js

Search Bot

To perform a search:

1. Add your search query inside search.js. For example:

console.log(await search('your query'))

Execute the script node search.js

QA bot

To interact with the QA feature of the app, use the following command:

node qa "your question here"

Replace "your question here" with your actual query.