Prompt Evaluation Basics: Reproducibility and Accuracy

AI Navigate Original / 5/16/2026

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Key Points

  • Prompt changes must be measured by evaluation, not impressions
  • Build dataset, metrics, automatic scoring, and regression tests
  • Compare with data; LLM-as-judge errs; run evaluation continuously
  • Start with 20–50 cases; prompts are code—don't deploy untested

Prompt Evaluation Basics: Reproducibility and Accuracy

"Somehow it got better" doesn't fly in development. Prompt changes need their quality measured by evaluation.

Building the Evaluation

  1. Evaluation dataset: collect representative inputs and expected outputs

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Prompt Evaluation Basics: Reproducibility and Accuracy | AI Navigate