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Maarten Grootendorst

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@MaartenGr

AI @GoogleDeepMind | Author of "Hands-On LLMs" (llm-book.com) & "Illustrated Guided to AI Agents" (ai-agents-book.com) | RAG Pack (ragpack.ai)
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Maarten Grootendorst Verified account @MaartenGr
How does Multimodal Generation work in LLMs?

With over 50 (!) visuals, I explain how LLMs can be created that not only generate text, but images, audio, and video as well!

We explore how generation of these different modalities works in general (e.g., Diffusion Transformer, Soundstream, Latte). It’s interesting to explore how Transformers have made their way into so many other domains beyond just text generation. We then cover how these multimodal decoding techniques could be connected to LLMs through early or late fusion.

I’m saying “We” because this was originally to be part of the book “An Illustrated Guide to AI Agents” written by @JayAlammar and me. Because the book was starting to become too big, we decided to remove this chapter. However! We love giving back, so we made this into a bonus chapter that is free for everyone to read :)
6 replies 46 reposts 285 likes 12K views View on X
Maarten Grootendorst Verified account @MaartenGr
Over 300 original figures, hundreds of iterations, two years of hard work... and it's finally here!

An Illustrated Guide to AI Agents is being shipped and delivered to people all over the world. @JayAlammar and I are excited to share this work with you all and to finally be able to see it for ourselves.

Visuals, concepts, and even code. We have something in the book for everyone!
3 replies 4 reposts 32 likes 2.2K views View on X
Maarten Grootendorst Verified account @MaartenGr
@JayAlammar and I only meet face-to-face after writing a book!

This time, we chose to share the stage at @pydataamsterdam. With an amazing and insightful audience, we covered the fundamentals of what makes an Agent. Using @GoogleDeepMind Gemma 4, we showed how the world has shifted from LLMs to Agents and from Words to Actions. The change from Gemma 3 to Gemma 4 shows how this shift can be seen from the lens of model development. Offloading human tasks does not only relate to execution, but model development is highly characterized by this concept.

Jay did an amazing job (as always!) showcasing how evaluation continues to be an important frontier, especially with the complexity of Agentic systems. His work on Cohere's North Mini Code was invaluable. Not just for this talk, but for the book as well.

But most of all, it's truly special to share a stage with a friend!
Maarten Grootendorst Verified account @MaartenGr
The eBook version of "An Illustrated Guide to AI Agents" is live!

More than 300 illustrations and the code for building an Agent from scratch. @JayAlammar and I did WAY too much for this book, and I'm glad we did.

We learned so much from our previous book, and we did all we could to make this book even more special. You will learn how to build an Agent entirely from scratch through text, code, and figures. We wanted to give you the complete educational experience and focused heavily on a single narrative throughout the entire book.

The physical edition should land in a couple of weeks, and I'm excited to get my hands on it!

Amazon: amazon.com/Illustrated-Gu…
O'Reilly: oreilly.com/library/view/a…