How much does an AI voice agent cost? Compared with an answering service or call center
In short
In 2026, an AI voice agent costs roughly $0.10 to $0.30 per call minute in usage (voice platform, AI model, voice, telephony), plus a setup quoted per project. A human answering service usually charges per call, per hour or a monthly package, from a few dozen to several thousand euros a month depending on volume.
Key takeaways
- An AI voice agent is mostly paid per minute: cost follows your call volume.
- A human answering service charges per call, per hour or a package, often within set hours.
- An in-house receptionist costs a full salary plus employer contributions, for office hours only.
- AI excels at repetitive calls; humans remain better at sensitive situations.
- The most effective setup often combines both: AI screens, humans handle.
How much does an AI voice agent cost?
An AI voice agent is mainly paid per call minute, roughly $0.10 to $0.30 depending on the technical choices, plus a setup fee. It's a variable cost that follows your call volume.
The public pricing of a platform like Retell (checked in October 2026) shows how that price is built:
| Component | Published price |
|---|---|
| Voice infrastructure | $0.055 per minute |
| AI model | from $0.024 (light models) to $0.16 per minute (top-tier models) |
| Synthetic voice | $0.015 per minute, up to $0.10 for some premium voices |
| Telephony | from $0.015 per minute (varies by country) |
| Phone number | $10 per month |
Other 2026 comparisons put AI phone answering solutions at $49 to $550 a month, or around $0.15 to $0.25 per minute. These amounts cover usage, not the design of the agent.
What does setup include?
Setup turns a generic technology into a receptionist who knows your business. That's the part quoted per project, because it depends on your call scenarios.
It usually includes:
- analyzing your typical calls and writing the scenarios;
- the knowledge base: opening hours, services, prices, procedures;
- choosing the voice and languages (FR, NL, EN);
- integrations: calendar, CRM, transfer to a colleague;
- testing with real calls and fine-tuning.
The more the agent must do (book an appointment, open a case, transfer according to rules), the more work setup takes. To learn how it works, read AI voice agents explained.
How much does an answering service or call center cost?
An outsourced answering service charges per call, per hour or a monthly package, within defined hours. Prices vary widely with volume and service level.
Industry guides describe three models:
- Package — a set number of calls or minutes included, with fees beyond that threshold.
- Per call — a price per handled call, handy for small volumes.
- Per hour — common for dedicated coverage or call centers.
A comparison published in 2026 puts a human answering service at €49 to €4,299 a month depending on volume (0 to 3,000 minutes), or about €1.43 to €5 per minute. These figures aren't specific to Belgium: ask local providers for quotes, stating your volume, hours and services.
What about an in-house receptionist?
An in-house receptionist means a full salary, for coverage limited to office hours. It's the most personal option, but the least flexible when call volumes spike.
For reference, the average gross monthly salary of a full-time worker in Belgium was €4,076 in 2022, according to Statbel, across all jobs. The employer's cost is higher: social security contributions, a 13th-month bonus, holiday pay and cover during leave.
AI voice agent, answering service or receptionist: the comparison
Each option has its sweet spot: AI for volume and availability, humans for nuance and empathy. The table sums up the differences.
| Criterion | AI voice agent | Outsourced answering service | In-house receptionist |
|---|---|---|---|
| Pricing model | Per minute + setup | Per call, hour or package | Salary + employer costs |
| Availability | 24/7 | Per contract | Office hours |
| Simultaneous calls | Several in parallel | Depends on the team | One at a time |
| Languages | FR, NL, EN and more | Depends on the provider | Depends on the person |
| Knowledge of your business | Knowledge base | Instruction sheet | Excellent |
| Sensitive situations | Transfer to a person | Good | Excellent |
| Booking appointments | Automatic in the calendar | Often manual | Manual |
How do you calculate the return on a voice agent?
The calculation starts with two numbers: the calls you miss today and what an answered call is worth. The per-minute price then becomes secondary.
A simple four-step method:
- Count calls received per month, and the share you miss (evenings, weekends, peaks).
- Estimate the value of an answered call: appointment, quote, sale.
- Work out the average call length and multiply by the per-minute price.
- Compare with your current cost: team time, answering service, lost opportunities.
Example: 600 calls a month averaging 2 minutes, or 1,200 minutes. At $0.20 per minute, usage comes to about $240 a month, for 24/7 coverage.
Hear it before you decide
The best test is to call an AI voice agent set up for your own business. Our demo connects you to an AI receptionist in seconds, right in your browser.
Try it: AI voice agent demo.
Ozapp builds AI voice agents in French, Dutch and English for Belgian SMBs, backed by more than 20 years of development experience. Every project is quoted after a free 30-minute consultation. For written questions on your website, see also how much does an AI chatbot cost.
Sources
- Retell AI, public pricing (checked in October 2026): retellai.com/pricing
- Techsy, call centers and AI voice agents, 2026: techsy.io
- CloudTalk, cost of a phone answering service, 2026: cloudtalk.io
- Companeo, phone answering service rates: companeo.com
- Statbel, average gross monthly salary 2022, reported by DH: dhnet.be
FAQ — AI voice agent cost
How much does an AI voice agent cost per month?
The monthly cost mostly depends on call minutes. On a platform like Retell, usage comes to roughly $0.10 to $0.30 per minute depending on the AI model and voice. At 1,000 minutes a month, that's about $100 to $300 in usage, plus the phone number and maintenance.
Is an AI voice agent cheaper than an answering service?
For repetitive calls such as opening hours, bookings or case follow-up, an AI voice agent is generally cheaper per minute than a human answering service, and it answers 24/7. For long, sensitive or highly varied calls, a human service still makes sense. Many businesses combine the two.
How much does a receptionist cost in Belgium?
The average gross monthly salary of a full-time employee in Belgium was €4,076 in 2022 according to Statbel, across all jobs. For the employer, add social security contributions, a 13th-month bonus and holiday pay. The role covers office hours, not evenings or weekends.
Can an AI voice agent book appointments?
Yes. Connected to your calendar, an AI voice agent checks availability, offers a slot, confirms the booking and can send a confirmation by text or email. It's one of the most profitable use cases, especially for practices, garages and salons.
How much does Ozapp charge to set up an AI voice agent?
Every voice agent is quoted based on your call scenarios, languages and integrations such as calendar, CRM or transfer to a person. After a free 30-minute consultation, you get a detailed quote within 24 to 48 hours. You can also call our demo to hear it in real conditions.
