AI Voice Agent Pricing Comparison 2026: Vapi vs Retell vs Bland vs ElevenAgents

Choosing an AI voice agent by the lowest number on a pricing page is a good way to underestimate a call budget. Vapi advertises a hosting fee. Retell combines infrastructure with a selected language model and voice. Bland quotes a conversational AI rate that covers more of the stack. ElevenAgents sells plans with included minutes, while Synthflow scopes an enterprise contract. Those are five different ways to buy a voice agent.

The question is not simply, Which voice AI platform is cheapest per minute? It is, What do I pay for a completed and correctly handled call in my actual workflow? This comparison uses public provider pricing reviewed on 6 November 2026. The illustrative calculations use specified selections rather than pretending every platform sells the same unit. No live calls were run and no platform was independently benchmarked for recognition accuracy, latency or reliability.

At a glance: what each platform actually charges

Sources: Vapi pricing, Retell pricing, Bland pricing, ElevenAgents pricing, Synthflow enterprise pricing. Provider-published prices, not independent transaction data.

Why the $0.05, $0.11 and $0.14 figures are not an apples-to-apples ranking

Vapi’s usage-only plan charges $0.05/minute for hosting and passes through provider model charges. Its published 1,000-minute calculator currently shows a hosted stack containing Deepgram transcription, an OpenAI model and ElevenLabs voice. The example totals $82 to $129 for 1,000 minutes with the calculator set to a free Vapi SIP transport option and no paid success package. The range is a configuration-specific estimate, not a universal Vapi rate or a promise that telephony is free in every deployment.

Retell’s calculator currently shows $0.11 per minute for one selected configuration. Its public component breakdown is $0.055 voice infrastructure, $0.04 model and $0.015 voice, with $0 telephony and $0 add-ons in that selection. Change the model, voice, phone service or extra features and the number changes. The company’s broader advertised voice range is $0.07 to $0.31 per minute.

Bland Start charges $0.14/minute for its AI conversation layer including the language model, transcription and generated voice, with telephony charged separately. Build lowers the AI rate to $0.12/minute but adds a $299 platform fee. This can be operationally useful because the bill is easier to forecast, but it is not an all-inclusive phone bill.

ElevenAgents is different again. Its Pro plan costs $99/month and includes 1,238 call minutes. That does not mean the model is free. The company separately bills applicable LLM usage. Extra hosted call minutes are listed at $0.08/minute, and an external telephony carrier may charge its own rates.

Synthflow’s current pricing page says the product is sold through an annual enterprise agreement with no free trial and no published per-minute rate. Do not assign it an invented minute price. Ask sales for a proposal built around your expected calls, systems, security requirements and support.

Original planning example: 1,000 billable voice minutes

Assume a company expects 1,000 connected, billable conversation minutes in a month. The table below illustrates disclosed price components. It intentionally excludes taxes, one-off implementation, human staff time, retries, optional quality assurance and any telephony charges not included in the chosen configuration.

These subtotals are not final bills and should not be used as a cheapest-provider league table. The products differ in which charges have been included. A realistic comparison uses an identical call sample, carrier geography, voice quality target, model behavior and human handoff policy.

The surprising break-even point on Bland’s public plans

If the only difference considered were the advertised Start and Build prices, then:

• Start AI charge: 0.14 × billable minutes.
• Build AI charge: 299 + (0.12 × billable minutes).
• The two amounts are equal when 0.02 × minutes = 299, or 14,950 minutes per month.

Below that volume, Start has the lower published AI-only charge. Above that volume, Build has the lower published AI-only charge. But Build also includes higher concurrency and call caps, so an operations team may select it earlier for capacity rather than for minute-rate savings. Carrier and transfer charges still need their own line items.

For a team making appointment calls, compare the total cost per accepted booking, not merely the platform subtotal. Our broader pricing guide explains why an unsuccessful dial, a verification retry and a human handover can change that figure.

The seven line items to request from every voice-agent vendor

1. AI processing and runtime

Ask whether the quoted number covers the conversation runtime, language model, speech recognition and generated voice. If not, list each upstream provider and usage meter. Confirm whether failed requests, silence and paused calls are billed.

2. Phone service and transfer legs

Separate the AI charge from inbound/outbound telecom, phone numbers, recording, transfers, forwarding and country-specific rates. A SIP integration can shift billing from the platform to your carrier without making phone service free.

3. Concurrency and call limits

Call minutes tell you volume, not whether ten people can call at once. Vapi’s usage-only plan publicly includes four concurrent calls. Retell’s pay-as-you-go tier includes twenty. Bland Start lists ten, and Build lists fifty. ElevenAgents’ Pro plan lists twenty. Confirm the queue behavior when those limits are hit.

4. Model and premium voice selection

A demo with an expensive model and voice may be more expensive than the platform’s default screenshot. Ask for the same model and voice configuration in every pricing estimate. Document supported languages and do not infer multilingual call accuracy from a vendor marketing page.

5. Integrations, testing and support

Connecting a calendar or CRM is not just an API checkbox. The implementation must handle duplicate bookings, missing records, wrong time zones, failed transfers and customer opt-out. Include setup effort, simulation calls, monitoring, logging and review time.

6. Quality, recording and consent

Ask which recording and transcription controls are enabled, how long data is retained, and which jurisdiction-specific consent rules apply. Do not assume a general statement of compliance covers your exact call workflow, country and data categories.

7. Completed outcomes

Define a successful result in the destination system, not from a call transcript alone. For a booking agent, verify the calendar record. For support, confirm that the issue was resolved or correctly routed. For sales, separate answered calls from qualified leads and completed transfers.

A sample cost-per-booking method

Suppose 1,000 incoming calls generate 4,000 billable minutes and the overall system, including AI, carrier, setup amortization and human assistance, costs $1,200 in the month. Suppose it produces 600 verified bookings in the booking system. These are hypothetical sample values, not measured vendor outcomes.

• Cost per incoming call: $1,200 ÷ 1,000 = $1.20.
• Cost per confirmed booking: $1,200 ÷ 600 = $2.00.
• Booking yield: 600 ÷ 1,000 = 60%.

A different agent could have a lower per-minute rate but cost more per booking if it causes more errors, needs more human review or takes longer to complete each task. Before buying, run both products against the same consented test scenarios and compare accepted outcomes.

For a workflow walkthrough, see our AI agent examples guide, including a fictional voice-based appointment-booking scenario. For decisions about automation versus human review, see our AI agent ROI guide.

For a closer operational comparison of two platforms in this table, read our Vapi vs Retell AI buying guide. It examines call flow design, inbound and outbound telephony, testing, concurrency and deployment trade-offs beyond advertised minute rates.

Which pricing model suits which buyer?

Developer evaluating a modular stack: Start with Vapi’s components and a named reference configuration. Ask how model and carrier bills are passed through and how usage is traced from each call.

Team seeking a configurable voice-agent platform with published component rates: Retell offers a useful public breakdown of infrastructure, model, voice, telephony and feature add-ons. Calculate using your exact selections.

Team wanting a simpler AI conversation rate: Bland’s bundled LLM/STT/TTS pricing can simplify budgeting. The separate carrier cost and plan limits still matter.

Team planning around included hosted minutes: ElevenAgents’ subscription structure gives a visible hosting allowance, but compare model charges and concurrency before treating the advertised monthly price as the entire cost.

Enterprise procurement with customized deployment: Synthflow’s model calls for a written proposal rather than per-minute table arithmetic. Compare scope, service commitments, integration responsibilities, data handling and exit terms.

None of these is a performance recommendation. We have not run a controlled test across providers. A better choice depends on your use case and the results of a real pilot.

FAQ

How much does an AI voice agent cost per minute?

There is no universal rate. The platform may charge only for hosting, bundle the model and speech services, or sell included minutes in a subscription. The final bill can also include telephony, premium voices, quality tools, integrations and human review.

Is Vapi cheaper than Retell AI?

The headline $0.05 Vapi hosting charge is not directly comparable to Retell’s advertised agent range because the included components differ. Use the same model, voice, carrier, minutes and add-ons to compare total cost per successful call.

Is Bland AI’s $0.14 per-minute price all-inclusive?

It includes the AI conversation’s language model, speech recognition and speech output according to Bland’s pricing page. Telephony is separate. Additional transfer-minute fees may apply under the relevant plan.

Is ElevenLabs’ ElevenAgents subscription the full cost?

No. Its plans include hosted call minutes, while applicable language-model usage is billed separately. An external phone provider may also bill its carrier charges.

Why is Synthflow missing from the example budgets?

Synthflow does not publish a per-minute self-service rate on its current pricing page. Any number without an actual enterprise quote would be speculative.

Sources, scope and updates

Reviewed on 6 November 2026:

1. Vapi public pricing and calculator
2. Retell AI pricing, calculator and components
3. Bland AI public pricing and plans
4. ElevenAgents public pricing and FAQ
5. Synthflow enterprise pricing

Numbers shown in this guide are vendor-published at the review date and may change. The scenario arithmetic is original editorial work, not a measured bill. We have not completed platform testing, bought these plans or obtained enterprise proposals. No vendors paid for inclusion. This article should be refreshed whenever a provider changes a plan or published price.