AI Engineering

Building Applications with Foundation Models

Author: Chip Huyen

The Definitive Blueprint for the AI Engineering Era

AI Engineering: Building Applications with Foundation Models by Chip Huyen is an excellent, comprehensive guide that manages to strike the perfect balance between breadth and depth. Having spent my time recently building AI-powered search and leveraging state-of-the-art embeddings and frontier Gemini models for AI safety, this book struck a deep chord with me.

From Execution to Articulation

There is a significant difference between “doing the work” and having a powerful articulation of the entire AI engineering landscape. While I work in this space daily, Huyen’s framework provided me with a much-needed deepened understanding of how all the pieces—from data to safety—interconnect. It transitions the reader from just “building” to architecting with intent.

The “Overlooked” Essentials: Evaluation & Metrics

One of the most valuable sections of the book is its deep dive into evaluation, an area that is frequently overlooked in the rush to deploy. The chapters on dataset preparation and the use of AI judges are particularly insightful. More importantly, the book offers a clear roadmap for translating technical AI metrics into meaningful business outcomes—a skill that is critical for any engineering leader.

Peeking Under the Hood

What sets this book apart is that it doesn’t just treat models as “black boxes.” By providing an in-depth look at what actually happens when models are fine-tuned, it gives you the “peek one level below” that is essential for building superior applications “one level above.” This technical grounding is what allows an engineer to move from a working prototype to a highly optimized production system.

Final Verdict

Whether you are already building on top of foundation models or are just beginning to explore the world of AI engineering, this book is an indispensable resource. It is rare to find a text that is as useful for a seasoned practitioner as it is for a newcomer.

I know I will be returning to these pages again and again throughout the year as a primary reference. Highly recommended.