

Free Lesson
AI Evals and Experimentation as Product Discovery
30 min
Dec 8, 2026 11:00 AM
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What you'll learn
See where different models actually disagree
Run one instruction through several models blind, so the full range of failures shows up instead of one model's habits.
Annotate like a researcher, not a tester.
Read real outputs closely and write down what is wrong and why. This is where the requirements come from.
Turn error analysis into rubric criteria.
Cluster the failure notes and convert them into checks that run automatically. Then keep running them.
Why this topic matters
For deterministic software, acceptance criteria describe what “working” means before you build.
For a probabilistic product, nobody can write that list upfront, because nobody knows yet where the model will go wrong. You discover the definition of good by looking at real outputs, and the eval is where that definition gets written down. That makes evals a discovery method, not a testing step.








