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Regression Testing (Agent)

Reviewed 19 July 2026Canonical definitionPart of: Agent Evaluation Terms →

Agent regression testing verifies that changes to a model, prompt, tool, or policy have not degraded the agent's performance on previously passing test cases. It is a critical step in every agent deployment pipeline.

§01 / QUESTIONSterm: Regression Testing (Agent)
Questions

Common questions.

What is Regression Testing (Agent)?

Agent regression testing verifies that changes to a model, prompt, tool, or policy have not degraded the agent's performance on previously passing test cases.

How is Regression Testing (Agent) used in production?

It is a critical step in every agent deployment pipeline.

Which terms are related to Regression Testing (Agent)?

Closely related concepts include Continuous Integration Agent, Prompt Regression Testing, Regression Detection (Agent), Evaluation Harness (Agent). Each is defined in the Prefactor glossary.

§02 / RELATEDnext: where this fits

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