In this video, I’m building and deploying a full stack AI chatbot app (ChatGPT / Gemini style) using the MERN stack—MongoDB, Express, React, and Node. I start by showing you the full demo: users can sign up/login, create new chats, search chat history from the sidebar, and generate either text responses or AI images from the same chat UI. I also added a community page where you can publish your generated images so other users can see them, plus a credits system (20 free credits on signup) where text generation costs 1 credit and image generation costs 2 credits. Then I take you step-by-step through the complete build: setting up a React app with Vite, adding React Router for pages (chat, credits, community), and using Context API to manage global state like user, chats, selected chat, and theme. I also set up Tailwind CSS, Google fonts, light/dark mode, and the full UI structure (sidebar, chatbox, messages). On the backend side, we connect MongoDB, create middleware, test APIs, integrate Google Gemini for AI text, and use ImageKit for image generation + storage/optimization. Finally, I add Stripe so users can buy credits, and deploy the project online (frontend on Vercel) so you can actually use it as a portfolio project or even your college project.