Build Your Own AI

Want to get a local LLM answering questions over your own documents, or an agent that calls your functions? Build Your Own AI is a book that walks developers through exactly that kind of project, with example code in TypeScript.

Build Your Own AI is a practical guide to building real-world AI applications, written by a developer for other developers.

Topics include running LLMs locally, prompt engineering, data extraction and creation, RAG, tool calling, agents, the basics of fine-tuning, and a section of tips and tricks.

The focus stays on core concepts and patterns you can reuse, and the code is kept clean and straightforward rather than clever.

It is handy for absolute beginners, people with some existing knowledge, and enthusiasts, so you do not need a machine learning background to start.

As a book, it teaches you to build things yourself instead of giving you a finished product to use.

If you work in TypeScript, the examples will feel familiar from the first chapter.