What Is an AI Voice Agent? How AI Phone Calls Work for Indian Businesses

An AI voice agent is software that talks on the phone the way a person does. It picks up a call, listens to what the caller says, works out what they need and answers in a natural voice. It can also make calls: calling back a lead, confirming an appointment or following up after an enquiry.

For Indian businesses, the interesting part is that today's voice agents can do this in Tamil, Hindi, Telugu and other Indian languages, and keep up when a caller mixes in English.

How an AI phone call works

Every turn of the conversation goes through three steps, usually in about a second:

• Listening. Speech recognition turns the caller's voice into text, as they speak.
• Understanding. A language model reads the text with your business information and the conversation so far, and writes the reply.
• Speaking. A text-to-speech voice says the reply, starting before the whole answer is even written.

The agent can be interrupted, like a person: if the caller starts talking, it stops and listens. It can also look things up during the call, such as an order's status or a free appointment slot, if you connect it to your systems.

How it differs from an IVR

An IVR plays a menu: "press 1 for sales". Callers have to fit their question into your menu, and many hang up. A voice agent lets them simply say what they want, in their own words and language, and answers it. When it can't, it passes the call to a person with a short summary.

What an AI voice agent can do

• Answer every incoming call, day and night, as an AI receptionist.
• Call back new leads within a minute of their enquiry.
• Ask qualifying questions, like budget, location or preferred date.
• Book appointments, site visits and meetings.
• Follow up with leads who haven't decided yet.
• Transfer to your team when a caller wants a person.
• Record, transcribe and summarise every call.

Where it helps most

Any business that misses calls or calls leads back too late. Real estate developers answering project enquiries, clinics booking appointments, coaching institutes handling admission questions, and online stores confirming cash-on-delivery orders are common examples.

What it costs

Voice agents are usually priced per minute. On Nimmi, a call minute is 1 credit plus the rate of the AI model you choose, counted in half-minutes. With a quick model, a minute works out to about ₹5 at the 1,000-credit pack price. See pricing for the current rates.

How to start

Add your business information, choose a language and a voice, and test the agent in your browser or on your own phone. When it sounds right, connect a phone number. Nimmi's AI voice agent is free to try, with 10 call credits.