Software advice
Best Voice AI Agents in 2026
A voice AI agent platform is software that lets a business run phone and web calls handled by an AI model, which listens, speaks, looks up records, books appointments and transfers to a person when needed. It joins speech recognition, a language model, a synthetic voice and telephony. It is not a simple IVR menu or a voice generator that only reads text.
Quick answer
Retell AI ranks first because its per-minute range is published, the free credit is real, and compliance terms are documented. Vapi suits developers who want to assemble each component, and ElevenLabs Agents suits teams that value voice quality and EU data residency.
Buying a voice agent means choosing who owns the stack. Some vendors give you one all-in rate per minute, others charge a platform fee and pass through the language model, speech and telephony bills, and enterprise builders quote only after a demo. This ranking judges how clearly a buyer can see the cost of one minute of conversation, what happens to call audio and transcripts, and how hard it is to move the agent elsewhere. We did not place test calls, so latency and naturalness are described from vendor documentation and design, not measured. Prices and policies come from vendor pages read on 23 October 2026.
The 11 best voice AI agents in 2026, ranked
There is no score. Vendors can pay for more visibility on this website, for example a higher place in a ranking or more room on a page. Commercial relationships can also affect which products we feature and how prominently. How we rank.
| # | Tool | Best for | Free plan | Entry price |
|---|---|---|---|---|
| 1 | Retell AI | Product and operations teams launching phone agents for booking, qualification or dispatch without a sales cycle | Trial | Pay as you go, $0.07 to $0.31 per minute for voice agents |
| 2 | Vapi | Engineering teams that want to choose their own transcriber, model and voice and keep control of each | Trial | $0.05 per minute hosting fee, models at provider cost |
| 3 | ElevenLabs Agents | Teams that care most about the voice itself and want call minutes sold in plain monthly plans | Yes | Free plan with 15 call minutes, paid plans from $6 per month |
| 4 | Bland | Sales and support teams that want model, transcription and voice in one per-minute rate | Trial | $0.14 per minute on Start, no platform fee |
| 5 | Synthflow | Mid-size and large contact centers wanting a managed voice agent rollout from a Berlin vendor | No | Enterprise contracts from $30,000 per year |
| 6 | LiveKit | Product developers embedding realtime voice or video agents in their own app on open source code | Yes | Build plan at $0 per month, Ship from $50 |
| 7 | Parloa | Large European and global brands running AI agents across customer service in several languages | No | Quoted |
| 8 | PolyAI | Enterprises with large call volumes in hospitality, retail, banking or utilities needing a managed voice agent | Trial | Per-minute pricing quoted by sales |
| 9 | Deepgram Voice Agent API | Developers who already use Deepgram speech models and want one websocket API for the full agent | Trial | $0.075 per minute on pay as you go |
| 10 | Ultravox | Developers who want a speech-native voice model with simple per-minute billing and no surge pricing | Trial | $0.05 per minute on pay as you go |
| 11 | Pipecat Cloud | Engineering teams running open-source Pipecat agents that want managed hosting with WebRTC and telephony from one vendor | No | $0.01 per minute for the smallest agent size |
- 1
Retell AI
Retell AI ranks first because the price range per minute is printed on the page, a $10 credit lets you place real calls, and 20 concurrent lines are included from the start. Its compliance page documents SOC 2, HIPAA and GDPR terms, and retention is set per agent. The main caution for European buyers is that Retell says it does not run services inside the EU.
Strong on
- Pay as you go includes 20 concurrent calls, simulation testing, webhooks and an API
- Retention can be set per agent from one day to two years
- Retell has zero data retention agreements with its model, speech and voice subprocessors
Weak on
- Total cost per minute depends on the model and voice you pick, so it spans $0.07 to $0.31
- Retell states it does not currently operate services within the European Union
Skip it if: European teams that need audio processed inside the EU, or buyers who want a fixed monthly fee instead of usage billing. The $10 free credit and 20 concurrent calls come with pay as you go. Enterprise pricing is custom.
- 2
Vapi
Vapi ranks second because it is the most flexible developer platform in the list: you pick the transcriber, the model and the voice, and the model catalog is passed through at cost. The extra layers are your responsibility, so a real monthly bill needs a calculation. Its published estimate for 1,000 minutes sits between $82 and $129. EU hosting requires the Premier package.
Strong on
- Hosting fee is flat at $0.05 per minute, with provider costs passed through
- Success packages add zero data retention, role-based access and uptime commitments
- The platform includes testing and simulation before calls reach customers
Weak on
- EU region is available only with the Premier package, sold through sales
- HIPAA handling is a $2,000 per month add-on and cannot be combined with zero data retention
Skip it if: Non-technical teams who want a ready agent with one bill, or buyers who cannot spend time modeling component costs. The $5 free credit covers testing. Core costs $29 a month and Pro starts at $999.
- 3
ElevenLabs Agents
ElevenLabs Agents ranks third because call minutes come inside monthly plans from $6 to $990, and the extra rate of $0.08 per minute is easy to model. The vendor is known for synthetic voices, which counts for something when callers judge a phone agent by how it sounds. Enterprise controls include regional residency in the US, EU and India. The language model is billed on top.
Strong on
- Plans from Free to Business include 15 to 12,375 call minutes and 4 to 40 concurrent calls
- Enterprise offers data residency in the US, EU and India plus zero retention mode
- No extra telephony charge from ElevenLabs, though outside carriers bill separately
Weak on
- Language model usage is charged in addition to call minutes
- Going past the concurrency limit triggers burst pricing at $0.16 per minute
Skip it if: Teams that want to choose every component separately, or buyers who need a single flat price including the language model. Extra minutes cost $0.08 each. The language model is billed separately and Starter is discounted until Nov 1.
- 4
Bland
Bland ranks fourth because it prices the model, transcription and voice inside a single per-minute rate, so no token invoice arrives. Daily call caps of 100 on Start and 2,000 on Build constrain outbound campaigns until you move up. Enterprise adds on-prem or VPC deployment, data residency and a forward-deployed engineer. Compliance documents sit behind an NDA.
Strong on
- One rate covers model, speech recognition and voice, with no token charges
- Start has no platform fee and Build allows 50 concurrent calls
- Enterprise offers on-prem or VPC deployment and data residency
Weak on
- Start allows 100 calls a day, which limits campaigns until you pay for Build
- Compliance documentation is available under NDA on Enterprise only
Skip it if: Teams that want to pick a specific language model or a third-party voice and swap them freely. Build costs $0.12 per minute plus a $299 monthly fee. Telephony is billed separately at carrier cost.
- 5
Synthflow
Synthflow ranks fifth because its pricing page now sells only enterprise contracts, starting at $30,000 per year, which removes it from the quick trial group. The pitch is a managed rollout with implementation, testing and optimization included, backed by a German entity with a stated data protection officer. Voice AI buyers who want to experiment first will find Retell or Vapi easier to start.
Strong on
- Contracts include a master services agreement, data processing agreement and a security review
- Native telephony, SIP trunking and custom concurrency planning are offered
- The vendor operates from Berlin as AgentFlow AI GmbH with a named data protection contact
Weak on
- No self-serve price list is visible on the pricing page, so a demo comes first
- Annual enterprise minimum puts it out of range for small pilots
Skip it if: Startups and agencies that need a monthly card payment and a prototype in an afternoon. Final pricing is scoped on call volume, concurrency, telephony, integrations, security needs and launch support.
- 6
LiveKit
LiveKit ranks sixth because it is infrastructure, not a finished voice agent: you write the agent logic with its open source framework and run it on LiveKit Cloud. The Build plan costs $0 with one free phone number, and the pricing calculator shows about $0.048 per minute for one configuration. Region pinning and HIPAA reports are on the $500 Scale plan.
Strong on
- Open source agents framework runs on LiveKit Cloud or on your own servers
- Plans include agent deployment, observability, simulations and inference credits
- Scale adds region pinning, private links and role-based access
Weak on
- No visual builder, so a developer must write and maintain the conversation logic
- Costs combine session minutes, telephony and several model charges, which complicates forecasting
Skip it if: Support or sales managers without developers who want a finished agent configured through a dashboard. Scale starts at $500 per month. Agent sessions are metered per minute plus model and phone usage.
- 7
Parloa
Parloa ranks seventh because it sells to large service organizations through a demo, with no price or trial visible. In return it lists a broad compliance set, including ISO 27001, SOC 2, PCI DSS, HIPAA, DORA and GDPR, and describes data zones for regional residency. Customer quotes on its site come from insurance companies and other large brands. Smaller teams should look at self-serve platforms first.
Strong on
- Security page lists ISO 27001, SOC 2 Types 1 and 2, PCI DSS, HIPAA, DORA and GDPR
- Parloa Zones keep customer data in a chosen region
- Data retention policies are set per customer requirement rather than one default
Weak on
- No public pricing or self-serve trial, so evaluation takes a sales cycle
- Marketing results such as 70 percent lower cost per contact are vendor claims, not audits
Skip it if: Teams under a few thousand calls a month or developers who want to experiment alone. Parloa publishes no prices and sells through demos. Budget conversations start after a scoping call.
- 8
PolyAI
PolyAI ranks eighth because its main product, the Wren agent built in Dialog Studio, is sold to enterprises on a per-minute quote billed per second. A newer self-serve API gives developers model access at 2 cents per connected minute, plus token charges, with a free credit for sign-ups. The platform page lists SOC 2 and ISO 27001. Pricing for the core platform stays undisclosed.
Strong on
- Billed per second on connected time, with no minimums
- Your own carrier connects over SIP at no charge
- Testing, simulated conversations and A/B tests are included at no extra charge
Weak on
- Core platform price is not published, so budgeting needs a sales call
- The self-serve Dialog-RSN-1 API is model access only, not a finished agent
Skip it if: Teams wanting a fixed monthly fee, or a no-code agent they can launch without vendor help. The pricing page says per-minute billing, with a separate Dialog-RSN-1 API at 2 cents per minute.
- 9
Deepgram Voice Agent API
Deepgram's Voice Agent API ranks ninth because it is a developer interface rather than a business-ready platform: one websocket connection that handles speech recognition, the model call and speech output. The $0.075 per minute rate and the $200 credit make prototypes inexpensive. There is no dashboard for call centers, and security terms were not checked here.
Strong on
- One API call connects speech recognition, the language model and text-to-speech
- Pay as you go has no minimums and no expiration on credit
- Concurrency reaches 45 voice agent sessions, or 60 on Growth
Weak on
- No built-in telephony, campaign tooling or dashboard for non-developers
- The vendor's data handling and training policy was not checked for this ranking
Skip it if: Business teams without engineers, or anyone needing phone numbers and call routing in the same product. New accounts get $200 in free credit. Growth credits start at $4,000 per year and bring the rate to $0.068.
- 10
Ultravox
Ultravox ranks tenth because its pricing page is simple but the product is aimed at builders, and the page offers little on data handling. The $0.05 per minute rate, 30 free minutes and a stated absence of surge pricing make early testing cheap. The five-call cap on pay as you go and the unread security terms keep it below the platforms above.
Strong on
- Published flat rate of $0.05 per minute with no surge pricing on the plans listed
- SIP minutes are priced separately at a fraction of a cent per minute
- Pro removes hard concurrency caps and adds scheduled outbound calling
Weak on
- Pay as you go is capped at 5 concurrent calls, which blocks campaign volume
- Security certifications and data retention terms were not found on the pages read
Skip it if: Teams that need a no-code builder, compliance documentation up front or a vendor with a published office location. The pay-as-you-go plan includes 30 free minutes and a cap of 5 concurrent calls; Pro costs $100 per month.
- 11
Pipecat Cloud
Pipecat Cloud ranks eleventh because it is hosting for code you write, not a finished agent product. Daily bills agent hosting from $0.01 per active minute, with transport and phone lines priced separately and concurrency listed as unlimited. That suits engineers who already use the open-source framework, but a business team gets no dashboard, scripts or campaign tools from this page.
Strong on
- Hosting rates are published per minute for three agent sizes, plus a cheaper reserved rate
- Bring your own speech, language and voice providers, with more than 80 listed
- Concurrency is listed as unlimited, with PSTN and SIP dial-in and dial-out available
Weak on
- The total cost per call is a sum of hosting, transport, telephony and provider bills
- No free credit amount or security certification appeared on the pages read
Skip it if: Business users without developers, or buyers who want one all-in per-minute price for a finished phone agent. Hosting is billed per active minute; speech, model, voice and carrier charges come separately from your chosen providers.
How these voice AI agents were judged
How do I judge whether a voice agent sounds natural and resolves calls?
Judge it by listening to calls on your own scripts, because vendor demos are chosen for their best moments. Latency and interruption handling decide whether a caller hangs up, and these come from the stack: Deepgram sells a streaming model with built-in turn detection, and PolyAI quotes about 280 milliseconds median time to first token for its own model. Neither number is audited by us. Record twenty calls per candidate with background noise, accents, someone changing their mind mid-sentence and a request the agent cannot fulfill. Count how many reach the correct outcome, and check that a failed call transfers to a human with context rather than ending in silence.
What does a voice AI agent cost per minute in 2026?
Published per-minute figures run from a few cents to about thirty cents, depending on what is bundled. Retell lists $0.07 to $0.31 per minute for voice agents, Bland charges $0.14 on its Start tier and $0.12 on Build with a $299 monthly fee, and Deepgram's Voice Agent API is $0.075 per connected minute on pay as you go. Vapi charges $0.05 per minute for hosting while model, transcription and voice come on top. ElevenLabs sells call minutes at $0.08 each beyond plan allowances. Synthflow starts enterprise contracts at $30,000 annually. Parloa and PolyAI route price questions to sales. These are figures as of October 2026.
Where are call recordings and transcripts stored, and are they used for training?
Call audio can contain names, card numbers and health details, so read the vendor wording on training, retention and region. Retell says that for enterprise customers under a master services agreement, it does not use their data to train models, and it lets you set retention per agent from one day to two years. Vapi includes zero data retention with its paid success packages and restricts its EU region to the Premier package. ElevenLabs lists data residency in the US, EU and India, and Parloa describes regional data zones. Retell states it does not currently operate services inside the EU. For Deepgram and LiveKit, the vendor's policy was not checked for training terms.
How hard is it to switch voice AI vendors once agents are in production?
Switching costs sit in three places: phone numbers, conversation logic and integrations. Numbers can usually move if you hold them with a carrier you control, so check whether the vendor lets you bring your own through SIP before you port anything. Bland and Retell both list own-telephony options. Conversation logic is the hard part, since flows built in a visual builder such as Bland's Pathways or Synthflow's workspace rarely export in a form another vendor can read. Developer platforms that keep prompts, tools and webhooks in code or an API, such as Vapi and LiveKit, are easier to rebuild elsewhere. Ask for an export of prompts, call logs and transcripts before you sign.
Which voice AI agent fits a startup, a call center or a regulated enterprise?
A startup or agency testing an idea should start where a card is enough: Retell, Vapi, Bland Start, ElevenLabs Free or LiveKit Build all open without a sales call. A support or sales team with a few concurrent lines and no engineers should price ElevenLabs Agents or Bland, where components come bundled. A regulated enterprise in banking, insurance or healthcare, with security reviews and many languages, should shortlist Parloa, PolyAI and Synthflow, and Retell or Bland when it wants a self-serve start first. European buyers should ask each vendor where calls are processed and where support staff sit.
How to choose a voice AI agent platform in three steps
- Price one realistic month of calls. Take your busiest month, convert it to talk minutes, and add the share of calls that transfer to a person. Then price every shortlisted vendor three ways: platform fee alone, platform plus model, voice and phone, and the all-in plan. A 20,000-minute month at Vapi's $0.05 hosting fee is $1,000 before components, while Bland's $0.12 rate is $2,400 plus $299, with the model included. Ask whether transfers, failed calls, silence and ringing time count as billed minutes, and what concurrency cap you get, since a cap rejects callers during a campaign.
- Run twenty hard calls before committing. Write twenty scripts that include an angry caller, a wrong number, a request to speak to a human, a language switch and a payment detail. Run them through each shortlisted agent on a phone line, not in the dashboard preview, because telephony adds delay that previews hide. Score outcomes, not impressions: did the booking land in the calendar, did the CRM record update, did the transfer carry a summary. Repeat the batch a week later after a model update, since several vendors change underlying models without a migration project.
- Get compliance and exit terms in writing. Before a contract, ask five things: whether recordings train any model, how long audio and transcripts are kept and who can delete them, where processing happens, whether a data processing agreement and, for health data, a business associate agreement are available, and what you can export if you leave. Vapi prices its HIPAA option at $2,000 per month, so such terms can change a budget. Also check how call recording consent is handled in your callers' countries, because the platform supplies tools but the legal duty stays with you.
Frequently asked questions
What is the best voice AI agent platform in 2026?
Retell AI ranks first here because it publishes a per-minute range, gives $10 in free credit, includes 20 concurrent calls on pay as you go, and documents SOC 2, HIPAA and GDPR terms. Vapi ranks second for developers and ElevenLabs Agents third for voice quality and EU residency. The right pick depends on who builds the agent.
How much does a voice AI agent cost per minute?
Published rates vary by what is included. Retell lists $0.07 to $0.31 per minute, Bland $0.12 to $0.14 with the model included, Deepgram's Voice Agent API $0.075 per minute, and ElevenLabs $0.08 per additional call minute plus the language model. Vapi adds $0.05 hosting to provider costs. Enterprise vendors such as Parloa and PolyAI quote after a demo, as of October 2026.
Can I use a voice AI agent with my existing phone number?
Usually yes, through SIP trunking or a connected carrier account. Bland says it works with your Twilio account and SIP trunks from any telephony provider, and PolyAI says your own carrier connects over SIP at no charge. Retell and Vapi both list Twilio, Telnyx and Vonage options. Confirm number porting, caller ID verification and who bills the carrier before you launch outbound campaigns.
Which voice AI agent platforms offer EU data hosting?
Fewer than the marketing suggests. ElevenLabs lists data residency in the US, EU and India for enterprise, and Vapi offers an EU region only with its Premier package. Parloa describes itself as born in the EU and offers regional data zones, and Synthflow is a Berlin-based GmbH. Retell states it does not currently operate services within the European Union. Ask each vendor where audio is processed, not only where it is stored.
Do voice AI agents work for healthcare calls?
Some vendors support it, but only with signed paperwork. Vapi sells a HIPAA option at $2,000 per month, Bland lists a business associate agreement with Enterprise, and Retell and ElevenLabs list HIPAA and BAA availability. A listing on a pricing page is not a compliance review. Confirm that every subprocessor, including the speech and language providers, is covered by the same agreement.
What is the difference between Vapi and Retell AI?
Both are developer-first platforms that charge per minute and pass model, voice and telephony costs through. Vapi lists $0.05 per minute for hosting and sells monthly success packages from $29. Retell lists $0.07 to $0.31 per minute for the whole agent depending on model and voice, and emphasizes agent templates, batch calling and a documented compliance page. Test both on your own scripts.
Do voice AI agents replace human call center staff?
Vendors position them as a first line that handles routine calls such as booking, status checks and qualification, with a transfer to a person for the rest. Bland, Retell and PolyAI all document transfer features. Staffing effects depend on your call mix, which no vendor page can state for you. Measure containment and transfer quality on your own calls before cutting any schedule.
Should I build a voice agent with LiveKit or Deepgram instead of buying one?
Build when voice is a feature inside your own product and you have engineers to maintain latency, interruptions and telephony. LiveKit's Build plan costs $0 and Deepgram gives $200 in free credit, so a prototype is cheap. Buy a managed platform when a support or operations team owns the agent, since developer toolkits leave the conversation design and monitoring to you.