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AI Evals in Practice
book

AI Evals in Practice

by Caio Incau
September 2026
Intermediate
216 pages
5h 33m
English
Packt Publishing
Content preview from AI Evals in Practice

Chapter 14 — Case Study: Taking a Flaky Agent to 99% Reliability

Theory is comfortable. Practice is messy. In this chapter, we apply everything we have built to a realistic scenario: a customer support agent that handles order inquiries, returns, and billing questions. It works most of the time. It fails unpredictably. Users complain. The team is afraid to change anything. Sound familiar?

We will take this agent from an unknown quality level to a measured 68% pass rate, diagnose the failure modes, iterate through five rounds of improvements, and arrive at 99% task completion — all using the evalkit workflow you have built throughout this book. Along the way, we will encounter every pitfall we warned about and learn how to navigate them.

This ...

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Publisher Resources

ISBN: 9781808817250