Pricing intelligence
What does an AI voice agent really cost?
A complete cost framework for AI voice agents, with a transparent example and the recurring, implementation and capacity expenses to include.
The useful answer
A voice-agent bill is a combination of usage, fixed commitments and implementation. Start with expected AI-handled minutes, add the full variable stack, then add monthly and one-time costs. The right estimate exposes assumptions rather than hiding uncertainty in one headline number.
Separate the bill into useful parts.
Platform & orchestration
The service coordinating the call. It may be priced per minute, by subscription, or in a custom agreement.
LLM, voice & transcription
The components that understand the call and generate a spoken response. A rate may bundle them or charge them separately.
Telephony & numbers
Carrier rates vary by destination and direction. Number rental and human-transfer time may add separate charges.
Capacity, support & setup
Peak concurrency, service packages, integrations and implementation can change the budget without changing call volume.
An example you can change.
Illustrative inputs: 1,000 calls a month, 3 minutes each, 80% of minutes handled by AI, $0.12/min combined AI cost, $0.015/min telephony, no fixed fee and $500 setup. These are user-editable assumptions, not market averages.
The volume scenarios change call minutes only. Fixed monthly fees and setup do not scale with volume. Taxes, human-handled minutes and unlisted services are excluded.
Open this in the calculatorFour pricing structures to keep separate.
Retell AI
Configuration-based usage. The advertised $0.07–$0.31/min range is configuration-dependent, not a ceiling for every model and add-on.
Retell pricing (opens in new tab)ElevenLabs Agents
Plan + included minutes + overage. Creator is $22/month at the regular monthly rate; a temporary first-month discount is not used in comparisons.
ElevenAgents pricing (opens in new tab)Vapi
Hosting + provider pass-through. $0.05/min is Vapi hosting only. It is not the total call cost.
Vapi pricing (opens in new tab)Synthflow
Sales-led, scoped agreement. Unable to normalize this configuration from public pricing.
Billing overview (opens in new tab)Ask for an itemized quote.
Give the vendor your expected volume and busiest calling window. Request the rate basis, minimum commitments, included allowances, overages, carrier charges, add-ons and renewal terms. Ask how silence, retries, failed calls and transfers are billed.
Record the quoted date and configuration. Recheck when a model, plan, carrier or use case changes. A budget based on last quarter’s default model is not evidence for today’s production setup.
Evidence, in the open
Go to the source.
Product capabilities are documented vendor statements. We have not independently benchmarked call quality or latency. How we evaluate evidence.