Vapi AI pricing, line by line

Vapi charges $0.05 a minute for hosting and passes on the cost of speech, AI model and voice, so a call costs about $0.08 to $0.13 a minute, plus a monthly plan for more than four calls at once. Stemvo charges €0.15 a minute with everything included.

Vapi figures from vapi.ai/pricing, checked 16 October 2026. Prices change, so check their page too.

What a Vapi minute is made of

Vapi’s fee plus each provider’s fee, on separate lines.

Part of the call	Vapi	Stemvo
Hosting	$0.05 / min	€0.15 / min, all of it
Speech to text	about $0.01 / min, at cost
AI model	about $0.008 to $0.045 / min, at cost
Voice	about $0.015 to $0.024 / min, at cost
Plan for 10 calls at once	Core, $29 a month	No plan needed
Extra concurrent calls	$10 per line a month	Included
Extra workspaces	$20 per workspace a month	Included

What a month costs

Vapi on the Core plan next to Stemvo, inbound calls on your own phone line.

Setup	1,000 minutes	10,000 minutes
Vapi, budget models	$111	$847
Vapi, premium models	$158	$1,318
Stemvo, everything included	€150	€1,500

Vapi totals include the $29 Core plan. Budget: $0.082 a minute. Premium: $0.129 a minute. Phone carrier costs not included.

Vapi or Stemvo: which fits you

Both run AI phone agents. They are built for different people.

Vapi suits

Developers building their own product

An API first: you pick each provider, write the logic for your clients and accounts, and pay each provider’s cost on top of Vapi’s fee.

Stemvo suits

Businesses and agencies who want it done

A ready dashboard, one price per minute, client accounts and your own brand for agencies, and call data kept in Europe. An API is there too.

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Vapi pricing questions

How much does Vapi cost per minute?

Vapi charges $0.05 a minute for hosting, plus speech, AI model and voice at the providers’ cost. Vapi’s own calculator puts 1,000 minutes at about $82 to $129, which is $0.08 to $0.13 a minute.

Does Vapi have a monthly fee?

The usage-only plan has no monthly fee but allows four calls at once. The Core plan is $29 a month for ten calls at once, and extra lines cost $10 a month each.

Is Stemvo cheaper than Vapi?

For small volumes on the Core plan they are close. Stemvo keeps one price of €0.15 a minute with everything included, and adds a dashboard, client accounts and white label without extra fees.

Does Vapi host data in the EU?

Vapi lists an EU region on its custom Premier plan only. Stemvo keeps call data in Europe on every plan.

Can I move my Vapi agents to Stemvo?

Yes. Copy your prompt and knowledge into a new agent, test it with your usual calls, then forward your number or move your SIP trunk.

One price. One line on your bill.

Start with 60 free minutes. No card needed.

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