Denis Ostapenko
ENPT

Books by Denis Ostapenko

Understanding the tools. Doing the work.

I write about the tools I use and the work around them. One book looks inside language models. The other follows an application from an AI prototype to a product people can use.

Language models and their uses

The Word Machine

Understanding Language Models and Putting Them to Work

How language models learn, why a convincing answer can still be wrong, and what it takes to use them in real work. Everyday examples connect the research to decisions you can make yourself.

Free PDF and EPUB in English and Brazilian Portuguese. Paperback and Kindle in English.

Read or get the book

Continue with AI Academy

Free courses in English and Brazilian Portuguese, from the mechanism of a language model to building systems around it.

Building an application

Your App Has to Work

From AI Prototype to Working Product: A Nontechnical Guide to Teams and Solo Development

An app is on the screen. Now two people book the same slot, a payment arrives late, or yesterday’s fix breaks today’s work. Follow that project with a development team, then work through it again solo with AI.

Paperback and Kindle. The book and its online companion are in English.

Explore the book

Use the development guide

Stages, role cards, handoffs, and checks to use while working on an application. An open reference companion to the book.