How to Build Your Own AI Chatbot

calendar Jul 8, 2025 · 1 min read · GenAI AI Chatbot FastAPI OpenAI RAG  ·
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Want to build your own AI-powered chatbot for your business or blog? Here’s a simplified step-by-step blueprint that works in 2025:

Tech Stack

  • Backend: FastAPI + OpenAI API
  • Frontend: React + Tailwind CSS
  • Memory / Search: ChromaDB or Pinecone
  • Hosting: Render.com + GitHub Pages (free tier)

Steps to Build

  1. Get an OpenAI API Key from https://platform.openai.com
  2. Setup FastAPI App with a /chat endpoint
  3. Use ChromaDB or Pinecone to store and retrieve past questions/answers (for RAG)
  4. Create React Chat UI with an input box, chat bubbles, and streaming response
  5. Deploy Frontend to GitHub Pages and Backend to Render.com (free tier)