Voice AI vs a call center: cost per call compared
Deciding whether to compare voice AI against a human call center on cost is a build-vs-buy and ROI question. Built for operations leaders automating calls, this page compares the AI approach to the alternative and shows when (or whether) it pays for itself.
Start here: Voice Agent Cost Calculator
Results update automatically as you type.
- STT / min
- $0.00600
- LLM / min
- $0.000300
- TTS / min
- $0.00750
- Per call
- $0.0690
- Per month
- $1,035.00
Then: AI ROI Calculator
Results update automatically as you type.
- Monthly value
- $2,000.00
- Monthly cost
- $500.00
- Net / month
- $1,500.00
- ROI
- 300.0%
- Payback
- 2.0 mo
Why this isn't trivial
The part people underestimate: human agents cost minutes of paid time per call while voice AI costs transcription, tokens and synthesis, so call length drives both. In practice the biggest savings come from automating routine calls and routing complex ones to humans, so it is worth modelling before you commit.
How it's calculated
We estimate this by comparing loaded agent cost per call minute with the AI voice stack cost per minute. Every figure uses the current provider prices baked into the site (reviewed daily), and you can override any input to match your own assumptions.
Frequently asked questions
Can voice AI fully replace agents?+
Rarely — it handles routine calls; humans take escalations and edge cases.
Where does voice AI save most?+
On high-volume, repetitive calls where per-minute AI cost beats labor.
Are these prices up to date?+
Yes. The model prices behind this calculator are refreshed and reviewed daily, so your estimate reflects current provider rates rather than a stale snapshot.
Related
Estimates for planning. Pricing data last reviewed 28 July 2026.