Maarten Grootendorst
maartengr.bsky.social
Maarten Grootendorst
@maartengr.bsky.social
🧑‍💻 Data Scientist | Psychologist
📖 Author of "Hands-On LLMs" (http://LLM-book.com)
🧙‍♂️ Open Sourcerer (BERTopic, PolyFuzz, KeyBERT; github.com/MaartenGr)
💡 Demystifying LLMs (newsletter.maartengrootendorst.com)
There are three chapters in Early Release on the O’Reilly Platform (Intro, Memory, and Tools): learning.oreilly.com/library/view...
An Illustrated Guide to AI Agents
Artificial intelligence is entering a new phase. No longer limited to answering prompts or completing simple writing tasks, AI agents can now reason, plan, and act with increasing... - Selection from ...
learning.oreilly.com
November 24, 2025 at 4:27 PM
And here you have it! The cover of our “An Illustrated Guide to AI Agents” book!

Why a Dolphin? The process of choosing cover animals is a closely guarded secret held deep within the legendary halls of O'Reilly. @Jay and I do not get to choose it, but we love it!
November 24, 2025 at 4:26 PM
Contest Rules 2:
* 7 lucky winners will receive digital copies of the book.
* We will close the contest on Monday 24th of November and share the cover!
* TIP - You can find all existing O’Reilly animal covers here: www.oreilly.com/animals.csp
www.oreilly.com
November 17, 2025 at 4:18 PM
Contest Rules 1:
* Each participant is allowed two guesses
* 3 lucky winners will be randomly selected from those who guessed correctly to receive a free print copy of our book when it hits the shelves (note: we cannot ship to Russia or Ukraine)
November 17, 2025 at 4:18 PM
You should be able to access it through the platform. I believe even if you do not have a subscription, but I'm not sure 😅
October 28, 2025 at 6:51 PM
@jayalammar.bsky.social and I cover memory (including context engineering) and tools (including MCP) in these chapters, along with many, many visuals. Every so often, we will release a new chapter and show you how they all fit within the framework(s) of AI Agent(s).
October 28, 2025 at 4:58 PM
Building off the book's foundation, we created enough content to hopefully keep you busy for a while:

github.com/HandsOnLLM/H...
Hands-On-Large-Language-Models/bonus at main · HandsOnLLM/Hands-On-Large-Language-Models
Official code repo for the O'Reilly Book - "Hands-On Large Language Models" - HandsOnLLM/Hands-On-Large-Language-Models
github.com
April 30, 2025 at 3:37 PM
I might have gone a little overboard with the number of visuals... but this is such an exciting topic! Here's the article: newsletter.maartengrootendorst.com/p/a-visual-g...
A Visual Guide to LLM Agents
Exploring the main components of Single- and Multi-Agents
newsletter.maartengrootendorst.com
March 17, 2025 at 3:57 PM
Can you guess which visual guide is coming?
March 14, 2025 at 4:05 PM
MCP is such an interesting protocol and a welcome addition to LLM-based frameworks.
March 14, 2025 at 4:05 PM