verifier

A verifier is a procedure or tool that judges whether an AI model’s answer or an agent’s completed task meets defined criteria. In reinforcement learning and evaluation, verifiers are often scripts that check whether a math answer is correct, whether code passes tests, or whether a computer-use task succeeded. Unlike a learned reward model that scores outcomes, a verification script checks explicit conditions.

This entry is based on AIPOST articles and widely known facts. If something is wrong, please send us a correction request.