TL;DR
A developer voice AI platform costs about $0.08 to $0.13 a minute on Vapi or Retell (billed in USD) or ₹5.52 a minute on Bolna, before the phone line, Bolna's platform fee and a developer's time. Ready-made Ringg AI charges ₹6 a connected minute with telephony included. For a 3,000-minute month the routes land close together, so the real decision is who builds and maintains the agent.
A developer voice AI platform costs about $0.08 to $0.13 a minute on Vapi or Retell, billed in US dollars, or ₹5.52 a minute on Bolna, before you add a phone line, Bolna's platform fee and a developer's time. A ready-made agent such as Ringg AI charges ₹6 a connected minute with telephony included.
At 3,000 minutes a month, the rupee-priced ready agents cost ₹15,000 to ₹18,499 and the dollar-billed platforms about $240 to $390 before phone charges. So the real question is not the rate card. It is whether you have someone to build, test and maintain the agent every week.
Platform or ready-made agent: what's the difference?
A voice AI platform gives you the parts: speech-to-text, a language model, a voice, and a way to connect a phone line. You write the prompts, connect your own systems (ticket creation, order lookup, refunds), and pay for each part per minute. Vapi, Retell, Bolna, ElevenLabs Agents and Acefone's "bring your own providers" plan work this way.
A ready-made agent comes configured from a dashboard with one price. Ringg AI, Superfone's AI receptionist, CallHippo's AI voice agent add-on and Aircall's AI Voice Agents sit here. You trade control for speed: Superfone's agents, for example, have preset roles and don't take custom call flows.
The line is blurry in India. Bolna and Ringg both offer no-code builders and APIs, so a small team can start ready-made and move deeper later without switching vendor.
Per-minute prices, part by part
How we compared: prices and features from each provider's official page, checked in September 2026. Prices exclude 18% GST unless stated. USD prices are billed in USD; we have not converted them.
| Platform | Platform fee | Speech, model and voice | Phone line |
|---|---|---|---|
| Vapi | $0.05 a minute hosting | About $0.03 to $0.08 a minute combined | Billed by your telephony provider |
| Retell AI | $0.055 a minute voice infrastructure | Model from $0.0016, voice from $0.015 | Free if you bring SIP |
| Bolna | Charged per minute; amount not on pricing page | ₹5.52 a minute flat, with its preferred models | Extra; your Twilio, Plivo, Exotel or Vobiz bill |
| ElevenLabs Agents | $0.08 a minute beyond plan minutes | Model billed separately | Telephony at cost |
| Acefone AI Voice Bot | $0.025 a minute | $0.025 each for speech, voice, model | India telephony included |
| Ringg AI (ready-made) | ₹6 a connected minute | Included | Included; ₹499 a month per number |
Vapi's range adds its lowest and highest listed rates for Deepgram speech-to-text ($0.0095 to $0.0099), OpenAI models ($0.0077 to $0.0452) and ElevenLabs voices ($0.0146 to $0.0238). Bolna's docs say its ₹5.52 flat rate covers speech, model and voice when you use its preferred models, and that telephony and a Bolna platform fee are billed on top. For an Indian phone line on a developer platform, Plivo's India rate is ₹0.38 a minute plus ₹200 a month per number, a useful benchmark.
Two options didn't make the table because they don't fit small teams: Synthflow's contracts start at $30,000 a year, and Intercom's Fin Voice is sold only through its sales team.
Worked example: a 3,000-minute support month
Say your support line takes 75 calls a working day averaging 2 minutes, over 20 working days: 75 × 2 × 20 = 3,000 minutes (our example). Here is that month costed seven ways, before GST.
| Option | Working | Month | Not included |
|---|---|---|---|
| Ringg AI | 3,000 × ₹6, plus ₹499 number | ₹18,499 | Check the monthly minimum |
| Bolna on your Plivo line | 3,000 × ₹5.52; Plivo 3,000 × ₹0.38 + ₹200 | ₹17,900 plus platform fee | Bolna platform fee, developer time |
| Superfone AI Receptionist | Per 6 months: ₹9,000 + 16,200 min × ₹5 | ₹15,000 | ₹1,500 setup once; 18% GST |
| Retell (default stack) | 3,000 × $0.11 | $330 | Phone line, developer time |
| Vapi | 3,000 × $0.082 to $0.129 | $245 to $387 | Phone line, developer time |
| ElevenLabs Agents (Pro) | $99 for 1,238 min; 1,762 × $0.08 | $239.96 | Model usage, phone line |
Superfone's six-month pool covers 1,800 of the 18,000 minutes; the rest are ₹5 top-ups, so ₹90,000 per six months, or ₹15,000 a month. Superfone's larger top-up packs cost less per minute, but its ₹5-a-minute pulse is rounded up. Ringg and Superfone land within ₹3,500 of each other, and Bolna's total depends on a platform fee it doesn't list. The dollar-billed platforms move mostly with the model you choose.
The gap between cheapest and dearest is small next to the cost of a bad month: an agent that mishandles angry billing calls can lose you more in customers than any per-minute saving. Our guide to which support calls to automate first helps size that risk.
The costs that aren't on any pricing page
A platform's per-minute rate is often the smallest line in a build. Budget for these before you choose one.
- Build time. Prompts, a knowledge base, and at least two connections: one to look things up (plan, order, ticket status) and one to write the result back to your helpdesk.
- Testing. Real calls in Hinglish, over noisy mobile lines, with people who interrupt. Plan one week of test calls before any customer hears the agent.
- Weekly upkeep. Someone reads transcripts, fixes wrong answers and updates prompts when your product or prices change. On a platform, that someone is technical.
- Concurrency. Vapi's pay-as-you-go allows 4 calls at once and its $29 Core package 10; Retell includes 20. An outage morning can exceed a low limit.
- Phone numbers and rules. Indian numbers need KYC with a licensed provider. If your agent calls customers back, TRAI's 2026 amendment, notified on 18 September 2026, defines calls started by software "without direct human dialling", including artificial-voice calls, as A2P calls that must be declared to your telecom operator in advance.
A quick break-even check: every ₹1 a minute you save by building is worth ₹3,000 a month at 3,000 minutes. If upkeep takes more of a developer's month than ₹3,000 buys, a ready-made agent is cheaper.
Five ways to cut the per-minute bill
Whichever route you pick, these cut minutes or the rate without hurting callers.
- Answer only the calls you miss. Send after-hours and busy-hour calls to the agent, and keep office-hours calls with your team.
- Keep answers short. Every minute the agent talks is billed. Write help answers of two or three sentences and let the caller ask for more.
- Use a cheaper model for FAQs. On Retell, model prices run from $0.0016 to $0.64 a minute. Plan and pricing questions rarely need the most expensive one.
- Bring your own keys. Bolna lets you plug in your own model, speech and voice accounts, and your own Plivo or Exotel line. You pay those providers directly, plus Bolna's platform fee.
- Transfer early. A caller who is angry or has an account problem costs minutes and goodwill. Hand them to a person in the first minute instead of letting the agent loop.
When should you build, and when should you buy?
Build on a platform (Bolna, Retell, Vapi) if:
- you have a developer who can own the agent after launch;
- the agent must act inside your product, such as resetting a workspace, checking usage or issuing a credit;
- callers need languages a ready agent doesn't name, or you want to swap models as better ones appear;
- you expect tens of thousands of minutes a month, where small per-minute savings add up.
Buy a ready-made agent (Ringg, Superfone, CallHippo) if:
- nobody on the team writes code;
- you need the agent answering this week, not this quarter;
- you want a rupee price list and a vendor to call when something breaks;
- most calls are FAQs, bookings and handoffs rather than account actions.
A middle path works well: start ready-made on a small share of calls, learn which questions come in, then build only the actions that the ready agent can't do. If your callers can reach you through your website, a browser web call costs less than a phone call because there's no phone leg to pay for. For a vendor-by-vendor shortlist, see AI voice agents for customer service.
Where TalkEasy by GrowEasy fits
TalkEasy by GrowEasy is neither a developer platform nor a standalone agent: it is a business-calling app with an AI receptionist built in. The receptionist answers incoming calls, including after hours and on holidays, works out why the customer is calling, answers common questions, captures details, and transfers the call or books a callback. Your team shares one business number, and every recorded call gets an AI summary.
It suits a team that wants none of the build work above. It doesn't suit a team that needs the agent to take actions inside its own product; for that, build on a platform.
TalkEasy's pricing page doesn't list the AI receptionist, so ask for its price; the listed Pro plan is ₹999 + GST a month with unlimited users and 3 hours of talktime a day (pricing). Our AI receptionist guide compares receptionist-style options for shops and clinics.
See how TalkEasy's AI receptionist works
Last reviewed 24 September 2026.
