I recently put together a step-by-step guide to building your own AI chatbot from scratch.
The goal is not just to show the final code, but to explain how the pieces actually work together — from the frontend and backend to the AI API.
In the guide, you'll learn how to:
- Understand the basic architecture of an AI chatbot.
- Keep API keys securely on the server.
- Choose and connect to an AI API.
- Write a System Prompt.
- Maintain conversation history.
- Manage tokens and API costs.
- Test chatbot responses and reduce hallucinations.
- Prepare the application for deployment.
The entire walkthrough takes around one hour, includes screenshots from the actual implementation, and comes with a sample project you can download and explore.
If you're new to AI development and want to move from simply using AI tools to understanding how an AI-powered application is actually built, this might be a useful place to start.
The article is available in both English and Thai.
Devlycan - Technology & Programming Insights
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