What is a voice AI agent?
A voice AI agent is software that holds a phone conversation on its own: it listens, understands what the caller means, decides what to do, and answers in a natural voice. It can also take actions during the call, such as booking an appointment or updating a CRM record.
Under the hood it combines speech recognition, a language model that plans the reply and calls your systems, and speech synthesis, all fast enough that the conversation does not feel delayed. Harmony.ai agents respond in under 200ms. Our guide to voice agents explains the parts and what to test before you buy.