AI voice agent
An AI voice agent is software that holds a spoken, real-time conversation over the phone using speech recognition, a language model, and text-to-speech. In sales, it can call prospects, answer questions, qualify, and book meetings without a human on the line.
An AI voice agent listens to the caller, transcribes speech to text, runs that through a language model to decide what to say, and converts the response back to speech, all in a continuous loop. The hard part is doing this fast enough to feel natural, which is measured as voice-to-voice latency; above roughly 700ms the conversation starts to feel robotic. TwinsAI's AI voice agents run sales calls end to end at sub-400ms, handle objections, and warm-transfer to a human when needed. They power the company's AI dialer and AI SDR.
Frequently asked
How does an AI voice agent sound natural on a call?
Naturalness comes mostly from speed and turn-taking: an AI voice agent has to listen, think, and respond in well under a second so there is no awkward dead air. Streaming speech and low voice-to-voice latency, under 400ms in TwinsAI's case, are what keep it from sounding robotic.
Related terms
TwinsAI is an AI voice agent that runs outbound sales calls end to end: it dials, qualifies, and books meetings, then warm-transfers a human when it matters.
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