Best AI Voice Agents for Customer Service in 2026
Short answer: PolyAI is the best AI voice agent for customer service in 2026 when the line itself is the product. It bills per minute, lists a 99.9% uptime SLA, and publishes no per-minute dollar. Choose Amazon Connect at $0.038 per voice minute when the queue already runs on AWS, because standard telephony sits on top of that rate. Choose Retell, from $0.07 to $0.31 a minute, when you want a card and no annual contract. Choose Genesys Cloud CX 1 at $75 per user a month, billed annually, when the humans and the bot should share one floor.
Ranked for the phone queue: who answers the caller, who gets the handoff, and which meter hits the invoice.
PolyAI is the default when customer service means a phone line that has to stay up. The public rate card bills ongoing use per minute, includes a published uptime SLA, and still leaves the cents to a quote, so you can compare the contract shape before you can multiply a month of calls.
Amazon Connect prints a voice-minute rate and does not sell a seat, which suits a queue already on AWS. Retell prints a per-minute band and lets you start without an annual contract, so a team that owns the flow can begin this week. Genesys Cloud CX 1 bills an annual named seat, and the voice bot spends tokens on top of that seat, so that shared floor is a bargain only if the pool covers the month. PolyAI, Parloa, Sierra, and Decagon are the quote paths, so a forecast stays a range until sales names the rate.
Toolradar data: of the 42 call center tools we track, 0 are free and 6 are freemium (14% free or freemium), while 33 (79%) are paid only. A free listing in that set is often a dialer or a small PBX, so it is not a voice agent that can close a billing call.
Methodology: these 10 agents were ranked for inbound customer service calls against the 42 tools in the call center category. Prices were verified on vendor pages in September 2026. No paid placement. Criteria are on how we rate.
A developer who is assembling speech-to-text, a model, and a voice belongs in the AI voice agents guide. An agent that also edits an order in chat belongs in the AI customer service agents guide. The widget on the website is the AI chatbots for customer service guide.
Top Picks
Picked by editorial review, informed by G2 and Capterra review volume and rating and by media mentions, the signals behind our category rankings. How we rate
| Tool | Starting price | Rating | Best for |
|---|---|---|---|
| PolyAI | Per minute, no dollar | 5.011 reviews | Enterprise support lines that need an SLA more than a self-serve card. |
| Parloa | No published rate | 4.537 reviews | Insurers, banks, and health lines that must keep the existing CCaaS. |
| Sierra | Outcome pricing, no $ | 4.5131 reviews | Companies that want one agent on voice and chat and will wait on a quote. |
| Amazon Connect | From $0.038/voice min | 4.5188 reviews | Teams already on AWS that want a published voice rate. |
| Genesys Cloud | From $75/user/mo | 4.32,308 reviews | Contact centers that want humans and the voice bot on one platform. |
| Talkdesk | From $105/user/mo | 4.43,399 reviews | Teams buying a voice floor and an AI layer on one order. |
| Decagon | No list price | 4.918 reviews | Brands that want the phone and the inbox on the same agent. |
| Retell AI | From $0.07/min | 4.81,472 reviews | Support teams that will own the call flow and want a card, not a quote. |
| Bland AI | From $0.14/min | n/a | Teams that want one AI rate and can live inside the Start caps. |
| ElevenLabs | 15 min free, then $0.08 | 4.61,236 reviews | Small support lines where the voice has to sound like the brand. |
Enterprise support lines that need an SLA more than a self-serve card.
Insurers, banks, and health lines that must keep the existing CCaaS.
Companies that want one agent on voice and chat and will wait on a quote.
Sierra's outcome-based pricing is unique and potentially very fair, as users only pay for successful results.
Teams already on AWS that want a published voice rate.
Amazon Connect's pay-as-you-go model is generally fair and competitive, especially with no minimum fees or long-term commitments.
Watch out
Storage for call recordings
Genesys Cloud
- 4.4 on G2 (1,571 reviews)
- 4.3 on TrustRadius (469 reviews)
- 4.3 on Capterra (268 reviews)
Contact centers that want humans and the voice bot on one platform.
This pricing is best suited for established enterprises prioritizing comprehensive features and AI capabilities over cost-efficiency.
Watch out
Potential overage for AI tokens
Teams buying a voice floor and an AI layer on one order.
This pricing structure is best suited for mid-market to enterprise-level businesses prioritizing advanced AI and comprehensive contact center solutions.
Watch out
Potential overage fees for high usage
Brands that want the phone and the inbox on the same agent.
Support teams that will own the call flow and want a card, not a quote.
Teams that want one AI rate and can live inside the Start caps.
Small support lines where the voice has to sound like the brand.
The main gotcha: credit consumption varies by model, Flash/Turbo models cost 0.5 credits per character, but the flagship Multilingual v2 costs 1:1, so your effective minutes depend heavily on which voice model you use.
Watch out
Credit consumption varies by model: Multilingual v2 uses 1 credit per character, but Flash/Turbo models use only 0.5 credits per character. Choosing the right model can double your effective quota.
What an AI voice agent for customer service is
An AI voice agent for customer service answers a customer phone call, resolves the request or transfers it with context, and bills by the minute, the seat, or the outcome.
That is a narrower buy than a helpdesk, which still needs a queue and a history, and a narrower buy than a voice API, which still needs you to wire telephony and a model. PolyAI and Parloa sell the spoken conversation for a contact center, so choose them when the call is the product and skip them if you still need the human floor. If the quote slips, the PolyAI alternatives are the next calls to price. Amazon Connect, Genesys Cloud, and Talkdesk sell the floor, and the agent is a line on that floor. Retell AI, Bland AI, and ElevenLabs sell the minute you can start on a card.
The split that changes the invoice is what the meter counts. A PolyAI minute includes maintenance and support and does not name a dollar. An Amazon Connect voice minute is the service charge, and the phone number is a second charge, so modeling only the service rate understates the bill. A Genesys voice bot converts runtime into tokens after the seat is already paid, so the seat is not an unlimited bot. A Sierra outcome, in most cases, is not billed when the call escalates, and a greeter call can still be consumption-priced. Read the call center software guide if you still need the human floor, and the helpdesk software guide if the open question is the ticket behind the call.
Why a five-minute call is four different invoices
AWS prices its own US-WEST-2 example at $0.38 for 10 minutes of Connect voice service, then adds a $0.03 day charge for a US DID and $0.0022 a minute for inbound use of that number. The outbound leg in that example is $0.0048 a minute, so a model of the service rate alone misses the number. Ten minutes at Retell's published calculator example of $0.11 is $1.10 before a phone number. Ten minutes on Bland's Start rate is $1.40, and a transfer minute on that plan is extra, so the cheap minute is not the handoff.
Ten named Genesys Cloud CX 1 users are $750 a month before tokens, because that annual seat is the one in the table. Ten Talkdesk Voice Essentials users are $1,050 a month at the published list, and that list assumes a three-year commitment plus telco. A team that compares the Connect minute with the Genesys seat without fixing the headcount and the call length will sign the cheaper sticker and the larger invoice.
Bland keeps warm transfer and live transfer on Enterprise, so a Start pilot can answer and still cannot pass a billing dispute to a person. Retell stops the AI fee once the call is transferred and keeps charging telephony, which favors escalations and punishes a queue that parks callers on hold. Sierra says an escalation is, in most cases, not an outcome charge, while a greeter-style call can still be consumption-priced. If the shortlist is the whole omnichannel desk rather than the voice agent, use the omnichannel customer service guide.
Key Features to Look For
The unit on the invoice (Essential)
PolyAI and Retell bill time on the call, so a long hold costs as much as a solved question. Amazon Connect bills a published voice minute, per second, with a 10-second minimum, plus telephony, which understates the bill if you ignore the number. Genesys and Talkdesk bill the human seat and then meter AI separately, so the seat is not the bot. Sierra bills an agreed outcome and, in most cases, skips the charge on an escalation. Parloa and Decagon publish the commercial shape and not a dollar, so rank them on fit until a quote arrives.
Handoff with the story intact (Essential)
Parloa, Sierra, and Decagon describe a transfer that carries intent and history to the person, which is what a billing dispute needs. Retell stops the voice-agent fee at the transfer and leaves the carrier fee running, so escalations still cost the phone leg. Bland's Start and Build plans omit warm transfer and live transfer, so a cheap pilot cannot pass that dispute to a person. A bot that hangs up and makes the caller redial has not contained the call.
What the cheap plan actually allows (Essential)
Bland Start caps the account at 10 concurrent calls, 100 calls a day, and 1 voice, so a demo-sized spike will fail a Monday morning queue. ElevenLabs Free includes 15 minutes and 4 concurrent calls, and Business includes 40, which is a small line rather than a contact-center peak. Retell includes 20 concurrent calls, then a monthly fee for each extra, so that included concurrency is only the pilot.
Compliance on the tier you can buy (Important)
Parloa lists ISO 27001:2022, SOC 2 Type 1 and Type 2, PCI DSS, HIPAA, and DORA on the platform FAQ, which is what a bank or a health line asks for before a pilot. Bland puts the BAA, SSO, and data residency on Enterprise, and Retell puts HIPAA, a custom BAA, and SSO on Enterprise. ElevenLabs puts BAAs and custom SSO on Enterprise as well, so a healthcare line on the self-serve card is not on the agreement the privacy team asked for.
Whether the minute includes the model (Important)
Bland's per-minute rate includes the model, transcription, and speech, with no token pass-through, so the headline is close to the invoice. Retell splits infrastructure from the voice and the model, so the plan band is a range and the calculator is the bill. ElevenLabs bills extra minutes separately and bills the model on top. Amazon Connect includes Polly generative speech and Nova Sonic in the voice service, and a third-party speech model is a separate provider bill.
Who edits the policy next week (Important)
Decagon's Agent Operating Procedures are written in natural language, so a return-window change does not wait on an engineering sprint. Sierra's Ghostwriter builds from procedures, transcripts, or a plain-language goal, so operations can change the agent without a services ticket. PolyAI's own guide says a simple telephony integration can start taking calls in 8 weeks, with an upfront build fee before the per-minute run rate, which is the wrong shelf if the policy changes this week.
What to weigh before you sign
Write the billable event in one sentence first. A PolyAI minute, an Amazon Connect voice minute plus DID, a Genesys token, a Talkdesk seat, a Bland transfer minute, and a Sierra outcome are not the same close.
If the humans already sit on Genesys, Five9, NICE, or Avaya, price Parloa or the native bot before you buy a second phone system, because Parloa names those platforms as integrations and publishes no dollar rate.
If you need a card this week, the self-serve set is Retell, Bland Start, and ElevenLabs. PolyAI, Parloa, Sierra, Decagon, and the Talkdesk list price all wait on a sales cycle or a multi-year order.
Test barge-in and a warm handoff on a real PSTN call, because a browser demo hides the jitter and Bland will not warm-transfer until Enterprise.
Evaluation Checklist
Place one real inbound call from a mobile phone and time the gap before the agent speaks, because a browser demo is not the PSTN path.
Interrupt the agent mid-sentence and confirm it stops, keeps the intent, and does not restart the greeting.
Force a handoff to a person and read the summary the human receives. If the caller has to repeat the account number, the agent failed.
Write a 1,000-minute month using the vendor's own unit: Connect voice service, Retell's component stack, Bland's plan rate, or Genesys tokens at 17 minutes each.
Confirm the BAA, SSO, and call-recording retention on the tier you will actually buy, not on the enterprise column.
Ask whether silence, hold, and the minutes after a transfer are billed. Retell bills silence and stops the AI fee at transfer.
Pricing Overview
Per voice minute
Amazon Connect's voice minute plus telephony, Retell's published band, Bland's bundled minute, and ElevenLabs extra minutes. PolyAI uses the same unit and does not print the rate.
Under a dime to about thirty cents
Seat plus AI meter
The Genesys Cloud CX 1 annual seat, with voice bots drawing the org token pool. Talkdesk's voice card is a three-year list, and telco is extra.
Annual named user
Outcome or consumption
Sierra charges an agreed outcome and, in most cases, does not charge an escalation. Greeter calls can switch to a per-conversation consumption price. Parloa ties the quote to task complexity rather than a flat token rate.
No public dollar
Self-serve card
ElevenLabs includes 15 minutes on the free plan and 75 minutes on the $6 Starter plan. Retell has no platform fee and includes 20 concurrent calls. Bland Start needs no card and caps the day at 100 calls.
Minutes included, then overage
Pricing Comparison
| Agent | Best for | Entry price | Meter | Free start |
|---|---|---|---|---|
Enterprise phone lines | No list price | Per minute, upfront build | Not published | |
Parloa | Regulated contact centers | No list price | Consumption by task | Simulation, no public plan |
Sierra | Brand voice plus other channels | No list price | Outcome, escalation often excluded | Not published |
AWS contact centers | $0.038/voice min | Per second, 10-second minimum | No seat minimum | |
Humans and a native voice bot | $75/user/mo annual | Seat plus AI tokens | No free plan | |
Talkdesk | Voice seat with CXA | $105/user/mo | 3-year list, telco extra | Express for under 50 employees |
Decagon | Voice, chat, and email | No list price | Not published | Not published |
Self-serve support calls | $0.07 to $0.31/min | Infra plus voice plus model | No platform fee, 20 concurrent | |
Bundled AI minute | $0.14/min | $0.12/min plus $299/mo on Build | Start, no card, 100 calls/day | |
Brand voice on a small line | 15 min included | Extra minutes $0.08 | Yes, 4 concurrent calls |
Verified September 2026 on vendor pages: PolyAI pricing, Parloa FAQ, Sierra outcome pricing, Amazon Connect pricing and the pricing appendix, Genesys Cloud pricing, Talkdesk pricing and the edition card, Retell pricing, Bland pricing, ElevenLabs agents pricing. Decagon publishes no list price.
Mistakes to Avoid
- ×
- ×
Buying Genesys Cloud CX 1 because the plan list names a native voicebot, then discovering the bot draws the org token pool.
- ×
Starting Bland on the no-card plan for a billing line, then learning warm transfer is Enterprise-only, so the pilot cannot hand the caller to a person.
- ×
Modeling Amazon Connect as the voice-service minute and forgetting the DID day, the inbound minute, and the $0.045 outbound-campaign minute.
- ×
Treating ElevenLabs Business, at 40 concurrent calls, as a contact-center peak, because that cap is a small line rather than a floor of agents.
Expert Tips
- →
- →
Price the handoff as its own line, because Retell's AI fee stops at transfer, Bland charges a transfer minute only after you are allowed to transfer, and Sierra usually does not bill the escalation.
- →
For a named Genesys org, divide 4,250 example minutes by your average handle time before you assume the included tokens cover the month, and overage in the US example is $1 a token.
- →
If engineering will own the prompts, start on Retell or Bland and keep the AI voice agents guide open for the developer platforms this page left off.
- →
Ask Talkdesk for the Autopilot usage rate in writing, because the voice card includes CXA and does not print an autonomous-minute price.
Red Flags to Watch For
- !
A per-minute headline that omits telephony, the model, or a platform fee. Retell, ElevenLabs, and Amazon Connect all bill at least one of those beside the headline.
- !
A voice plan whose warm transfer sits on a higher tier. Bland Start and Build will take the call and will not warm-transfer it.
- !
A token pool quoted per organization and sold as if it were per agent, because Genesys gives a named org 250 tokens a month, which the billing example turns into 4,250 voice-bot minutes.
- !
A three-year seat presented as a monthly voice-agent rate. Talkdesk's voice card is a minimum three-year list, and telco is extra.
- !
An outcome contract that also consumption-prices greeter calls, because Sierra says escalations are usually not charged and greeter interactions can still be billed per conversation.
The Bottom Line
PolyAI is the customer service voice agent to shortlist first when the phone line is the product: per-minute billing, a published uptime SLA, an upfront build, and no public rate. Amazon Connect is the published alternative, voice service plus telephony, for a queue already on AWS. Genesys Cloud CX 1 is the pick when humans and the bot share a floor and you will watch the token pool. Retell is the card you can start this week, inside the published band, which still bills silence and keeps compliance on Enterprise.
Parloa fits a regulated line that must stay on Genesys, Five9, NICE, or Avaya, and it will not replace that switch. Sierra fits a brand that will pay for outcomes and, in most cases, not for escalations. Decagon fits voice plus chat plus email on one natural-language workflow, so a phone-only team is buying more than the line. Bland fits a bundled minute until you need a warm transfer, which the lower plans do not include. ElevenLabs fits a small line that cares how the voice sounds, not a floor that peaks past the Business concurrency cap.
How we ranked: 10 voice agents from the 42 tools in the call center category, vendor prices checked in September 2026, no paid placement. Cite this: Toolradar, "Best AI voice agents for customer service 2026", September 2026.
Frequently Asked Questions
What is the best AI voice agent for customer service in 2026?
PolyAI is the best AI voice agent for customer service in 2026 when the phone line is the product. It bills per minute, lists a 99.9% uptime SLA, and does not publish the per-minute dollar, so you can judge the contract before you can forecast the cents. Amazon Connect is the priced alternative, at the voice minute in the table, plus telephony, for a queue already on AWS. Retell is the path when you want a card and no annual contract, at the band in that same table. Genesys Cloud CX 1 is the path when the human floor and the bot should be one system, at the annual seat in the table, if you will watch the token pool.
How much does an AI voice agent for customer service cost?
Published rates in September 2026 are the voice minutes and seats in the comparison table: Amazon Connect's voice service, Retell's band, Bland Start, and ElevenLabs extra minutes at $0.08, an overage rather than an all-in call. Genesys Cloud CX 1 and Talkdesk's voice card are both in that table, and Talkdesk's figure assumes a three-year list, so a seat is a different unit until you fix headcount. PolyAI, Parloa, Sierra, and Decagon do not print a dollar. Ten Connect voice minutes of service are $0.38 in AWS's own example, before the phone-number charges.
Is there a free AI voice agent for customer service?
ElevenLabs includes 15 call minutes and 4 concurrent calls on its free agents plan, then Starter is $6 a month for 75 minutes, enough to hear the voice and not enough to run a queue. Retell has no platform fee and includes 20 concurrent calls, and you pay the minute from the first connected call, so the free part is the missing fee rather than free minutes. Bland Start needs no card, includes an inbound number the vendor values at $15 a month, and caps you at 100 calls a day. PolyAI, Parloa, Sierra, and Decagon do not publish a free plan. Talkdesk Express, for companies under 50 employees, includes 25 licenses and $100 in credit, a credit against seats rather than a free voice agent.
How does PolyAI compare with Amazon Connect for support calls?
PolyAI is a voice specialist with per-minute use, a published uptime SLA, an upfront build, and no public rate, plus an 8-week telephony path in its own guide. Choose it when you want a vendor that owns the conversation and will quote the minute. Amazon Connect is a full contact center at the voice minute in the table, per second with a 10-second minimum, plus DID charges such as $0.03 a day and $0.0022 a minute inbound in the US-WEST-2 example. Choose Connect when the stack is already AWS and you need a number you can multiply today. More options for the human floor are in the call center software guide.
Is Retell or Bland better for customer service calls?
Retell is the better support stack when you need a published component bill and a transfer that stops the AI fee. The band is $0.07 to $0.31 a minute, infrastructure is $0.055, and silence is still billed, so a hold costs money even when nobody is speaking. Bland is the better stack when you want the model, transcription, and speech inside one rate: $0.14 a minute on Start, or $0.12 a minute plus $299 a month on Build. The lower minute only helps after that platform fee. Bland's weakness for customer service is the handoff: warm transfer and live transfer are Enterprise-only, and Start allows 100 calls a day.
What is the difference between a voice agent and a customer service chatbot?
A voice agent takes the phone call, handles interruption, and either finishes the request or transfers it, which is what this page ranks. A chatbot takes the website widget, the app, or WhatsApp, and it will not answer the PSTN line. The widget ranking is the AI chatbots for customer service guide, and the agent that also takes an action in another system is the AI customer service agents guide. You will usually keep a helpdesk behind both, which is a separate purchase.
Do Genesys and Talkdesk include the AI voice agent in the seat?
Genesys Cloud CX 1, at the annual seat in the table, lists a native voicebot and virtual agents, and those features draw AI tokens, so the seat is not an unlimited autonomous-call plan. A named org includes 250 tokens a month, and the billing example converts voice-bot runtime at 17 minutes per token. Talkdesk's voice card includes CXA and voice engagement, on a three-year list with telco extra, and Autopilot does not have a separate public minute rate. Neither sticker is a forecast of unlimited contained calls.
Cite this page: Toolradar, "Best AI Voice Agents for Customer Service in 2026", updated September 2026, https://toolradar.com/guides/best-ai-voice-agents-for-customer-service