Can I vibe code ChatGPT?
Conversational AI assistant for writing, coding, and answering questions.
You can build a ChatGPT-style interface in an afternoon — a chat window that streams responses from a model API is genuinely easy. But the interface was never the product; the model is. The thing people pay for is a frontier LLM trained on enormous compute by a large research lab, and that is not something you vibe-code — you rent it through an API or you do not have it at all. Clone the chat UI all you want; the intelligence inside it is the moat, and it is somebody else's.
Build a ChatGPT-style chat interface for my own use that calls a hosted model API (for example the Claude or OpenAI API). Requirements: a clean chat UI with streaming token-by-token responses, markdown and code-block rendering with copy buttons, multi-turn conversation history saved locally, the ability to start new chats and rename them, and a system-prompt setting. Add stop-generation, regenerate, and a model picker. Use Next.js App Router with the API key kept server-side. Be explicit in the README that you are building only the interface — the frontier model that makes it useful is rented through an API and is not something you can build yourself.
A polished chat UI that streams responses from a hosted model API, with conversation history and markdown rendering — the wrapper, not the brain.
- The frontier model itself — you rent intelligence, you do not build it
- Web browsing, code execution, image input, and voice, all integrated
- Memory across chats, custom GPTs, and the tools ecosystem
- The scale and reliability of an inference fleet serving millions
The chat box is trivial; the model behind it, trained for hundreds of millions of dollars, is not. People pay for access to that intelligence and the tools wrapped around it — and renting it is the only way to have it, because you cannot train a frontier model from a prompt.
A prompt is the first move, not the whole game. Course 01 teaches you to take a prompt like this one to a shipped, working app — reviewing, correcting, and steering the agent the whole way.
Start Course 01 →