Observability in AI apps. Eval Engineering for AI Developers, lesson 2 - add observability to AI

Galileo
922 views December 17, 2025

Learn Eval Engineering in this free, 5-part, hands-on course presented by @jimbobbennett ​90% of AI agents don't make it successfully to production. The biggest reason is the AI engineers building these apps don't have a clear way of evaluating that these agents are doing what they should do, and using the results of this evaluation to fix them. ​In this course, you will learn all about evals for AI applications. You'll start with some out-of-the-box metrics and learn about evals, then move onto understanding observability for AI apps, analyzing failure states, defining custom metrics, then finally using these across your whole SDLC. ​This will be hands on, so be prepared to write some code, create some metrics, and do some homework! ​In this second lesson, you will - Use observability to visualize the components of a typical multi-agent AI application - Learn about the different components that make up these applications - Apply some out-of-the-box metrics to start to get an understanding of how your application is working ​ Prerequisites: - ​A basic knowledge of Python ​- Access to an OpenAI API key - ​A free Galileo account (we will be using Galileo as the evals platform). Sign up at https://galileo.ai/sign-up. - Course materials from https://github.com/rungalileo/eval-engineering Catch the rest of the lessons here: https://youtube.com/playlist?list=PLS7keRo8770OODJn9HAEN8JKbIzTHME60 0:00:10 - Introduction & Welcome 0:05:19 - Course Schedule & Overview 0:07:22 - Prerequisites & Setup 0:10:39 - Homework Review: Context Adherence 0:13:54 - Introduction to Observability 0:16:35 - Demo: Runzi Multi-Agent App 0:25:46 - What is Observability? 0:26:46 - Components of Observability: Spans, Traces, Sessions & Metrics 0:35:05 - Demo: Finding Failures with Observability 0:47:09 - Evaluations & Observability 0:54:33 - Adding Metrics: Instruction Adherence & Tone 1:19:36 - When to Add Metrics 1:23:08 - Homework: Breaking Runzi & Custom Metrics 1:26:41 - Q&A Session

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