In this video I build a full stack DeepSeek clone in Next.js, step by step, exactly like a mini ChatGPT/DeepSeek web app. You get a clean UI with an input box to send prompts, a typing effect for the AI response, and a sidebar where you can expand/collapse, start a new chat, and manage your recent chat history. I also show how to format code responses so they look structured like your VS Code theme, and how the page auto-scrolls while the answer is generating. On the backend side, I use Clerk for authentication (Google + email signup), and I store user data in MongoDB Atlas using Clerk webhooks when someone creates an account. Every prompt/response chat is saved into the database so you can open it later from the sidebar, rename it, or delete it. After we finish building, I deploy the project to Vercel so you get a live link you can add to your resume—because real deployed full stack AI projects add serious value when you’re applying for dev jobs.