How Do You Actually Test an AI System? A Layered Strategy From Five Tools I Built

Description and use

<p>Every engineer who has shipped an LLM feature eventually hits the same wall. Your unit tests are green. Nothing throws. And yet the thing is quietly, obviously worse than it was last week. Someone swapped a model, someone tweaked a prompt, someone added a tool, and the output did not error, it just got dumber. No stack trace ever tells you that.</p> <p>I have spent a while building tools that try to answer one question honestly: how do you actually test an AI system? Not demo it. Test it. Below is the layered strategy I landed on, mapped to five open-source projects I wrote to make each lay

Problem

<p>Every engineer who has shipped an LLM feature eventually hits the same wall. Your unit tests are green. Nothing throws. And yet the thing is quietly, obviously worse than it was last week. Someone swapped a model, someone tweaked a prompt, someone added a tool, and the output did not error, it just got dumber. No stack trace ever tells you that.</p> <p>I have spent a while building tools that try to answer one question honestly: how do you actually test an AI system? Not demo it. Test it. Below is the layered strategy I landed on, mapped to five open-source projects I wrote to make each lay

Outcome

<p>Every engineer who has shipped an LLM feature eventually hits the same wall. Your unit tests are green. Nothing throws. And yet the thing is quietly, obviously worse than it was last week. Someone swapped a model, someone tweaked a prompt, someone added a tool, and the output did not error, it just got dumber. No stack trace ever tells you that.</p> <p>I have spent a while building tools that try to answer one question honestly: how do you actually test an AI system? Not demo it. Test it. Below is the layered strategy I landed on, mapped to five open-source projects I wrote to make each lay

Evidence

How Do You Actually Test an AI System? A Layered Strategy From Five Tools I Built

Source