jordimerejo / pdf-chat-ai

An AI powered Next.js app to chat with your PDF files and get a streamed response using Langchain and PineconeDB ✨🤖💻🗃️

PDF-CHAT AI ✨🤖💻🗃️

An AI-powered PDF chat built with Next.js 13, Langchain, and PineconeDB

👷🏾‍♂️ Want to Learn How to Build It?

Check out the tutorial on my YT channel

✨Update✨

Added sources to the stream and displaying it in an accordian

Chat.with.sources.mov

Architecture

👩‍🚀 Description

Built with:

• ✅ Next.js 13
• ✅ Shadcn-ui
• ✅ Langchain TypeScript integration
• ✅ PineconeDB as the knowledge store
• ✅ Dark Mode with persistent theme-switching

🗃️ Pre-requisites

• Create a free account and get an OPEN_AI key from platform.openai.com
• Create a free account and get access to PineconeDB
• And populate your .env file with the required information.

💬 Good to know

• The PineconeDB index creation happens when we run npm run prepare:data, but its better to create it manually if you dont want the command to fail.
• If the command fails, then give sometime for pinecone index to get initialized and try to run the command again, it should work eventually.

🧞 Commands

All commands are run from the root of the project, from a terminal:

Command	Action
npm install	Installs dependencies
npm run prepare:data	Splits your PDF file under the /docs folder into chunks, embeds them, uploads them to Pinecone
npm run dev	Starts the local dev server at localhost:3000

🚸 Roadmap

• ✅ Add sources to the streamed chat bubble
• 🚧 Clean up and show proper error messages
• 🚧 Sanitize input and output source documents

👏🏽 Contributing

Pull requests are welcome, before creating a PR talk to me on discord. For major changes, please open an issue first to discuss what you would like to change.