An Illustrated Guide to AI Agents

This repository hosts the code for the book "An Illustrated Guide to AI Agents" by Maarten Grootendorst and Jay Alammar, published by O'Reilly, which teaches readers to build a TinyAgent from scratch using only LLM calls, with memory, tools, and autonomy. The book spans ten chapters, from introduction to AI agents and large language models through reasoning models, memory, tools, planning, evaluation, multi-agent collaboration, multimodal understanding, and coding agents, and includes more than 300 custom figures. All examples can be run for free in Google Colab using a T4 GPU or locally, with a setup folder providing a quick-start guide.