An AI voice agent is software that holds a real phone conversation. It listens to the other person, understands what they mean, decides what to say based on your instructions, and replies with a natural-sounding voice. Businesses use AI voice agents, also called AI calling agents, for sales calls, follow-ups, reminders and simple support.
How an AI phone call works
- Speech recognition turns the caller's words into text in real time.
- A language model reads your script and knowledge, and decides the next reply.
- Text-to-speech speaks the reply in the chosen voice.
- The whole loop repeats in under a second or two, so it feels like a conversation.
What AI voice agents are good at
- Calling many leads quickly and consistently.
- Asking qualifying questions and recording the answers.
- Booking appointments and sending reminders.
- Speaking several languages, such as English and Hindi.
Limits to know
- They should only state facts you give them.
- Complex negotiations and sensitive issues still need a human.
- Calling rules (consent, do-not-call lists, calling hours, AI disclosure) still apply.
Getting started
With Hellio you write or generate a script, pick a voice, upload leads and launch. Start with a small test list, listen to recordings, and improve the script before scaling up.
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