TL;DR
Your monthly cost is connected call minutes × the all-in per-minute rate, plus any plan or telephony fees. The cheapest AI phone answering service is the one with the lowest all-in cost for your minutes and no minimums, not the lowest headline rate.
How much does an AI answering service cost per month? The answer is a short formula, and the cheapest option depends on your call volume.
The monthly cost formula
Monthly cost = connected minutes × per-minute rate + plan fee + telephony and extras.
- Connected minutes. Calls per day × average minutes × days in the month.
- Per-minute rate. Use the all-in rate that includes speech, intelligence and platform.
- Plan fee. Some vendors charge a fixed monthly fee for a bundle.
- Telephony and extras. Numbers, messages and add-ons.
Example (illustrative). 20 calls a day at 1.5 minutes is 30 minutes a day, about 900 minutes a month. At ₹6 per minute that is ₹5,400 before telephony.
Finding the cheapest AI phone answering service
- Estimate your real minutes, including after-hours calls you miss today.
- Ask each vendor for the all-in cost at that volume.
- Check minimum commitments, setup fees and overage rates.
- Compare plans at your volume: pay-as-you-go is cheapest at low volume, bundles at higher volume.
- Weigh quality: a cheaper service that loses callers is expensive.
Pay-as-you-go versus plans
At low volume, pay-as-you-go avoids paying for minutes you do not use. As volume grows, a plan with included minutes lowers the effective rate. Swarvo offers both: ₹6 per minute after a ₹100 free credit, and monthly plans such as Business with 5,000 minutes included. Details are on the pricing page.
What to avoid
- Annual contracts before a trial.
- Rates that exclude telephony.
- Per-call charges that penalise short calls.
Use the cost calculator and read our small business guide or the broader cost guide.