Regression testing for AI agents is the practice of re-running an agent against a fixed set of known cases after every change to confirm that new behavior did not silently break previously correct behavior. It catches the quiet failures: a prompt tweak that fixes one intent and degrades three others.
For a customer experience agent, the change surface is wide. A new model version, an edited instruction, an added knowledge source, a retuned threshold, each can shift outputs in ways no one intended. Regression testing turns that uncertainty into evidence by replaying real historical conversations and comparing the new answers against the expected ones.
The Aide point of view is that no change should reach a customer on faith. Aide, the agentic AI platform for customer experience, treats regression as a gate rather than an afterthought: the Agent Simulator replays real historical conversations so a change is measured against known-good behavior, and a change that regresses a verified intent does not ship. The diffs are surfaced to the team, so people see exactly how an edit moved behavior instead of living with a black box that drifts unseen.