Glossary
Human-in-the-Loop (HITL)
AI system designs where a human reviews or approves key AI actions.
Definition
Human-in-the-loop describes AI systems where a human is involved at defined checkpoints — typically to review outputs, approve high-stakes actions, or correct edge cases. HITL is not the opposite of automation; it is a design pattern that combines AI leverage with human accountability.
Context
Well-designed HITL systems can be highly leveraged: the human works only on the exceptions the AI escalates, not every case. In regulated industries, HITL is often the difference between what an AI system is allowed to do (draft, recommend) and what it isn't (decide, execute unattended). The design question is where the human touches the process, not whether.