How to Build 3D AI Chatbots (No Backend Required)
Overview
In this tutorial, you’ll learn how to create fully interactive 3D AI chatbots without writing a single line of backend code. We’ll combine Three.js, React Three Fiber, n8n, and modern AI providers to build a real, production-ready chatbot experience that can be used for clients, creative projects, or your portfolio.
You’ll see how to:
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Use any LLM (OpenAI, Gemini, Claude, Ollama) and swap them with one click
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Add realtime lipsync with blendshapes and visemes
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Build everything with a visual backend powered by n8n
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Deliver a polished experience that looks great and works reliably
Why This Tutorial Is Worth Your Time
A lot of developers can build a basic AI chatbot, but things get complicated the moment you try to make it feel real. Maybe you’ve experienced this already:
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Lipsync takes forever to process
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The voice sounds robotic
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Switching LLMs means rewriting half your backend
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Setting up servers becomes a whole project on its own
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And integrating everything inside a 3D scene? Even harder
After working on several client projects like this, I realised most of these problems came from the same place: the workflow itself. It was too slow, too fragile, and too hard to maintain.
This tutorial is my answer to that.
I’ll show you the exact setup I now use for real client work—a setup that’s fast, flexible, and easy to build on:
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You can switch between OpenAI, Gemini, Claude, or Ollama instantly
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Lipsync works in realtime, right in the browser
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n8n handles all the “backend stuff” visually, so you write zero backend code
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And the 3D part stays clean and simple with React Three Fiber
By the end, you’ll have a 3D AI chatbot that looks good, feels responsive, and is reliable enough to use in real projects. It’s the foundation I wish I had when I started building these experiences.
Resources/Tech Stack
Experience the project in action
#threejs #js #chatbot
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