What are evals?

Evals are a set of test cases you run to check whether a change actually made things better.

Navid Moazzezby Navid MoazzezUpdated Sept. 12, 20261 min read
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3 of 4 in #getting-good-output

Without them you are judging by whether the last answer felt good, which is how people convince themselves a worse prompt is an improvement.

Ten real examples with known-good answers is enough to start.