AI voice agents
AI voice agents that answer the calls you are missing
Phone agents that pick up on the first ring, answer the questions your team answers forty times a week, book the appointment into your real calendar, and hand over to a person the moment the call needs one.
Bring a week of missed-call data. That number is usually the whole business case.
Quick answer
What does an AI voice agent cost, and will callers know they are talking to an AI?
Mana Studio builds AI phone agents that answer on the first ring, handle the questions a team answers dozens of times a week, book appointments into a real calendar, and transfer to a person the moment the call needs one. The published packages are the US price list: a reception agent from $699, a booking agent at $1,799 and a multi-line setup at $3,499; India projects are quoted to scope. Ongoing telephony and model usage is billed to the client's own provider accounts rather than marked up. Callers are told they are speaking to an AI — the agent says so, because pretending otherwise is both a poor experience and, in a growing number of jurisdictions, a legal problem; in practice callers do not mind an agent that answers immediately and books them in. The setup routes an existing number through the agent, or forwards to it only when the line is busy or out of hours, so nothing has to be reprinted. When a caller wants a human it transfers immediately with a summary attached, and it transfers on its own initiative when it detects frustration or hits a question it is not confident about. Numbers, recordings, transcripts, keys and provider accounts are all in the client's name — call recordings are customer data and should never sit in a vendor's account. Mana Studio is based in Warangal, Telangana, India, works with clients in India, the United States, the United Kingdom and the UAE in English, Telugu and Hindi, and replies to enquiries within one business day.
Last reviewed
- Reception agent
- From $699 (US price list)
- Booking agent
- $1,799
- Multi-line
- $3,499
- India
- Quoted to scope
- Disclosure
- The agent tells callers it is an AI
- You own
- Numbers, recordings, transcripts and provider accounts
The case for a voice agent is almost never “we want AI”. It is a missed-call log. A clinic that loses four bookings a day to a busy line, a workshop where the phone rings while everyone is under a car, a business whose enquiries arrive at 8pm when the office closed at 6. Those calls do not leave a voicemail. They call the next number on the results page.
A voice agent earns its cost against that number and nothing else. If your calls are being answered well today, we will tell you not to buy one. Where they are not, the agent picks up every time, knows your services, hours, prices and address, asks the two or three questions a receptionist would, and writes the booking into the same calendar your team already works from.
The engineering that matters is the handover, not the voice. What happens when the caller is angry, when the question is outside the script, when the line is bad, when somebody says “let me speak to a person”. We design those paths first, because a voice agent that traps a customer in a loop does more damage than the missed call it replaced.
The calls that are being missed
Every enquiry here is really about the same thing: a phone ringing when nobody can pick it up, and what that costs.
“We miss calls when the shop is busy.”
The most common case and the easiest to justify, because you can count the missed calls from your own phone bill before deciding anything.
“Calls come after hours and go to nobody.”
Answer, handle the common questions, take the booking or the message, and put it in front of a person at opening time with the recording attached.
“Most calls are the same three questions.”
Timings, location, price, availability. Worth handling before anything more ambitious, because it is the volume.
“People hang up on robots.”
They hang up on slow, looping ones. Latency and interruption handling matter more than voice quality, and an immediate route to a human is not optional.
“Our callers speak Telugu or Hindi.”
Testable before you commit. Model quality varies a lot by language and by code-switching mid-sentence, so we evaluate on real recordings rather than assuming.
“It has to book into the system we already use.”
Usually the deciding constraint. The integration into your calendar or booking system is most of the work, not the voice.
What a voice agent handles
Reception and call answering
Answers on the first ring, 24/7, with your business hours, services, location and pricing. Takes a message with the caller's details attached where it cannot help, so nothing arrives as “missed call, unknown number”.
Appointment booking
Checks real availability, books into your actual calendar, confirms by SMS or WhatsApp, and handles the reschedule and cancel calls that eat a receptionist's morning.
Lead qualification on the phone
Asks the questions that separate a buyer from a browser, scores against your criteria, and routes a live caller straight to a salesperson when the answers justify it.
Overflow and after-hours
Sits behind your existing line and picks up only what your team does not, the second simultaneous caller, the 9pm enquiry, the lunch hour. Your staff keep the calls they are best at.
Outbound follow-up calls
Confirmation, reminder and no-show follow-up calls, where the alternative is a person working a list. Consent and opt-out are handled as part of the build, not bolted on.
Human handover, designed first
Transfer to a real person on request, on frustration, or on anything the agent is not confident about, with the conversation summarised for whoever picks up. Every call is recorded and logged.
When a voice agent pays, and when a person is cheaper
This one has an honest break-even and it is worth being straight about, because the answer for a small shop is often no.
| If this is the situation | What fits | Why |
|---|---|---|
| A handful of calls a day, one person handles them | Keep answering yourself | A person is cheaper and better. The setup and per-minute cost will not pay back at that volume, and we will say so. |
| Calls are missed at predictable busy times | Overflow answering | The agent picks up only what rings out. Lowest risk way to start, and the missed-call count tells you whether it worked. |
| Calls come after hours | Out-of-hours answering | Answering, qualifying and taking a message beats voicemail by a wide margin, and the transcript reaches a person in the morning. |
| High volume of repeatable questions | Front-line answering with handover | Where it genuinely pays. The handover rule, not the script, is the thing to get right. |
| Callers need to book appointments | Agent plus calendar integration | The booking system integration is the build. Without it the agent takes a message rather than a booking. |
| The enquiry is mostly on WhatsApp, not the phone | Messaging, not voice | Cheaper to run and easier to get right. Worth checking where your enquiries actually arrive before building for the phone. |
Running cost is per minute of conversation plus telephony, billed to your own accounts. We size that against your actual call volume on the first call, so the monthly number is visible before the build is quoted.
How it is built
Mainstream, well-supported technology — chosen so your next developer can pick the project up, not so we are the only ones who can maintain it.
Voice
- Speech-to-text
- LLM reasoning
- Neural text-to-speech
- Interruption handling
Telephony
- Your existing number
- SIP / VoIP
- Call transfer
- Call recording
Knows your business
- Services & hours
- Pricing
- Calendar availability
- CRM lookup
Control
- Escalation triggers
- Confidence thresholds
- Full call logs
- Consent handling
How we work
How a voice agent project runs
Count the missed calls first
We start with your call data, not a demo. If the volume does not justify the build, that is the recommendation and it costs you nothing.
Script the real calls, including the awkward ones
Built from the calls your team actually takes, the price haggle, the wrong-number, the angry one, rather than a happy-path flow that collapses on contact with a customer.
Test on your own recordings
Evaluated against real past calls so there is a measured containment and booking rate before it answers a live customer.
Launch behind your line
Overflow first, the agent takes what your team cannot, then more of the volume as the logs earn it. Every number, key and recording stays in your accounts.
What it costs
Voice agent packages are published in full for the US market. India projects are quoted to scope after the call-volume review, because telephony setup varies more than the agent itself does.
Systems built by the same team
A voice agent is only as good as the systems it books into and reads from. That is the engineering.
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AI Voice Agent Development by industry
The sectors we have shipped work in, and what changes about the build in each one.
Sources & further reading
The primary documentation behind the claims on this page.
Related services
AI Voice Agent Development — frequently asked questions
How much does an AI voice agent cost?
The published packages are the US price list: a reception agent from $699, a booking agent at $1,799, and a multi-line setup at $3,499. Ongoing telephony and model usage is billed to your own provider accounts rather than marked up. India projects are quoted to scope.
Will callers know they are talking to an AI?
Yes, and the agent says so. Pretending otherwise is both a bad experience and, in a growing number of places, a legal problem. In practice callers do not mind an agent that answers immediately and books them in. They mind one that wastes their time.
Can it use our existing phone number?
Yes. The usual setup routes your existing number through the agent, or forwards to it only when your line is busy or out of hours. You do not have to publish a new number or reprint anything.
What happens if the caller wants a human?
It transfers, immediately, with a summary of the conversation so far so the caller does not repeat themselves. It also transfers on its own initiative when it detects frustration or hits a question it is not confident about.
Is a voice agent better than a chatbot?
It is different, not better. If your customers call, a voice agent captures what the phone loses; if they message, a chatbot does more for less money. We look at where your enquiries actually arrive before recommending either, see our AI chatbot development page.
Who owns the call recordings and data?
You do. Numbers, recordings, transcripts, keys and provider accounts are all in your name. That matters more here than elsewhere: call recordings are customer data, and they should never sit in a vendor's account.
Scope an AI voice agent
Bring a week of missed-call data. That number is usually the whole business case.
Reference
Terms and guides worth reading first
Plain definitions and walkthroughs from our own reference library. No sign-up, no gate.
- AI AgentAn AI agent is a program that uses a language model to decide what steps to take toward a goal, then carries them out by calling real tools
- Workflow AutomationWorkflow automation connects the tools a business already uses so that an event in one triggers actions in the others without anyone re-typing data
- Large Language Model (LLM)A large language model is a system trained on very large amounts of text to predict likely continuations
- RAG (Retrieval-Augmented Generation)RAG is the technique of searching your own documents for passages relevant to a question, then giving those passages to a language model along with the question, so the answer is grounded in your content rather than the model's training data
- EmbeddingAn embedding is a list of numbers representing a piece of text's meaning, positioned so that texts with similar meanings sit close together
- Vector DatabaseA vector database stores embeddings and finds the closest matches to a query quickly
Best AI Voice Agent Development Company in India To Stop Missing Calls You Already Paid to Generate
The case for a voice agent is almost never "we want AI", it is a missed-call log: a clinic losing bookings to a busy line, a workshop where the phone rings while everyone is under a car, enquiries arriving at 8pm after the office closed at 6. Those calls do not leave a voicemail, they call the next number on the results page instead.
A voice agent earns its cost against that specific number and nothing else. If your calls are already answered well, a competent developer will tell you not to buy one rather than sell you the build anyway.
Why businesses are looking at this now
Marketing spend that generates a call and then loses it to a busy line or an after-hours gap is spend with no return, and it is an easy number to see once someone actually counts missed calls for a week rather than assuming the front desk is coping. That count, not enthusiasm about AI, is what should justify the build.
What the agent should actually handle
- Answers on the first ring, 24/7, with your real hours, services, pricing and address
- Books into your actual calendar and confirms by SMS or WhatsApp
- Qualifies the caller against your criteria and routes a live one to a salesperson when it justifies it
- Sits behind your existing line as overflow, taking only what your team does not answer
- Transfers to a person immediately on request, on frustration, or when it hits a question it is not confident about, with a summary attached
What it costs
Published on the US price list: a reception agent from $699, a booking agent at $1,799, and a multi-line setup at $3,499. Ongoing telephony and model usage is billed to your own provider accounts rather than marked up. India projects are quoted to scope after a call-volume review, because telephony setup varies more between businesses than the agent itself does.
What to check before you sign
Ask to hear it handle an angry caller and a wrong-number call, not just the happy path booking demo. Ask what happens on a bad line or an interruption mid-sentence, and ask whether it discloses that it is automated when asked, several jurisdictions now have disclosure rules for automated calls and getting caught being evasive about it costs more goodwill than a straight answer ever would.
When a voice agent is the wrong purchase
If your enquiries mostly arrive as messages rather than calls, a chatbot on WhatsApp does more for less money, and a voice-first vendor will not volunteer that comparison. It is also the wrong spend if call volume is genuinely low: the build and telephony setup cost more than the missed calls are worth, and the honest recommendation there is to fix the busy-line problem with a second SIM line, not with AI.
How the project should run
It should start with your own call data, not a demo script, and it should be tested against real past recordings before it answers a live customer, so there is a measured booking and containment rate before launch rather than a demo impression. Launching behind your existing line as overflow first, then expanding as the logs earn it, is lower risk than switching every call over on day one.
Ownership, past the first project
The phone number, recordings, transcripts, keys and provider accounts should all sit in your name. Call recordings are customer data in a way that matters more than most software output, and they should never live only inside a vendor's own account where you would lose access if the relationship ended.
Talk to us about ai voice agent development
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