Test AI like you test code.
An eval is a set of real examples with a clear definition of “good”, run every time something changes. It's how you know quality, instead of guessing.
Collect
Real examples from real use.
DEFINE GOOD
A simple rubric for what a great answer looks like.
SCORE
People and automated checks.
RUN ON CHANGE
New prompt, model or data? Re-run.
TRACK
Watch scores over time.
Accuracy
Is it right?
Groundedness
Is it supported by the sources?
Helpfulness
Does it actually help the person?
Harm rate
Anything unsafe, private or embarrassing?
No evals, no confidence.