A voice AI interview is a structured qualitative research session in which an AI interviewer engages participants through spoken conversation, probing dynamically based on what each person actually says rather than following a rigid script. Within the broader category of AI-moderated research, voice AI interviews occupy a distinct position because they preserve the tonal, emotional, and linguistic richness of spoken language, which text-based or survey-based methods cannot replicate. Researchers use voice AI interviews to run concept testing, brand exploration, customer satisfaction studies, and behavioral research at a scale that traditional human moderation cannot sustain. The format supports asynchronous participation, meaning hundreds of conversations can run in parallel across markets and languages without scheduling constraints.