Applied AI·Evaluation and reliability
you re-run the whole scored set after a prompt tweak or a model upgrade, so you find out you broke case 12 before your users do.
Regression testing
Draft summary, pending review
Re-running the eval set on every prompt, model or pipeline change and comparing to the previous run. The habit that separates teams who know a change hurt quality from teams who find out from customers. Model upgrades are changes; test them like deploys.