Voice agent platform · by Retell AI
Retell AI
Retell AI is a platform for building and deploying AI voice agents that automate phone calls for businesses.
Retell AI in one paragraph
Retell AI is a voice agent platform that lets businesses build, deploy, and manage AI-powered phone agents for inbound and outbound calls. The platform charges per minute of call time, with rates from $0.07 to $0.31 depending on the models and add-ons selected. Retell AI says its agents deliver ~600ms latency and handle tasks like booking appointments, qualifying leads, and transferring to human agents. The platform offers a no-code studio for building call flows, simulation testing, and integrations with CRMs and telephony systems. Retell AI states it is compliant with HIPAA, SOC 2 Type II, GDPR, and ISO 27001.
How does Retell AI bill?
Retell AI bills per minute of call time, tracked to the nearest second with no rounding up per call. Voice agent rates range from $0.07 to $0.31 per minute depending on the LLM, text-to-speech voice, and add-ons selected. Chat agents start at $0.002 per message. Billing covers the entire call duration including silence and hold time. Once a call is transferred to a human, the AI voice agent fee stops and only the telephony fee continues. Failed calls are not charged. Additional costs include $8 per concurrent call per month beyond the 20 free included, $2 per month for Retell phone numbers, and $10 per month for verified phone numbers.
| Plan | Price | What’s included |
|---|---|---|
| Pay as you go | $0.07-$0.31/minute | Full platform access, pre-built agent templates, call analytics and transcripts, simulation testing, webhooks and API access, 20 free concurrent calls, community and email support |
| Enterprise Plan | Custom Pricing | Everything from pay as you go plus dedicated implementation support (add-on), custom MSA/DPA terms, role-based access control, dedicated stable server (add-on), custom SSO, high cap on concurrent calls, 24/7 omnichannel support with dedicated portal |
Worked examples: Retell AI pricing at three call volumes.
What would a month cost?
Our model uses the cheapest published plan for each volume and a 3-minute average call. Change the inputs in the savings calculator.
| Calls per month | 100 | 300 | 600 | 1,000 |
|---|---|---|---|---|
| Estimated bill | $21–$93 | $63–$279 | $126–$558 | $210–$930 |
Retell publishes a $0.07–$0.31/min range depending on the voice, model and telephony you choose.
Where Retell AI sits at 300 calls a month
300 calls of 3 minutes, priced on each vendor’s cheapest published plan. Cheapest first.
Vapiusage, platform fee only$45+- Retell AIusage, rate range$63–$279
Bland AIusage, rate range$126
GoodcallGrowth$129
RosieScale$149
UpfirstPro$160
My AI Front DeskBusiness-in-a-Box$274
DialzaraBusiness Elite$349
Smith.ai AI ReceptionistEnterprise$500
Rubyover planAbove published plans
What happens when Retell AI can’t answer?
AI agents can brief human agents, answer follow-up questions, and confirm they're ready to take over before connecting the customer. Once transferred, the AI voice agent fee stops.
Booking and scheduling
Book appointments by checking availability and booking directly through the AI agent
Connects with
- Make
- Twilio
- Vonage
- Go High Level
- n8n
- Hubspot
- SIP trunking
- Telnyx
- ElevenLabs
- OpenAI
Languages: Voice agents can hold conversations in multiple languages
Where it’s strong
- Pay-as-you-go pricing with no annual contract or minimum commitment
- $10 in free credits at signup with full platform access and 20 free concurrent calls
- Compliance with HIPAA, SOC 2 Type II, GDPR, and ISO 27001 stated on the site
- Per-second billing with no rounding up per call, and AI agent fees stop after transfer to a human
Watch-outs
- Enterprise plan pricing is not published and requires contacting sales
- Add-on costs apply for extras like branded call ID ($0.10 per outbound call), additional concurrent calls ($8 per call per month), and knowledge bases beyond the first 10 ($8 per KB per month)
- Billing continues during silence and hold time because the speech-to-text engine remains active
Pick it or skip it
Pick Retell AI if: You want a per-minute voice AI platform with no annual contract, published rates, and compliance certifications for healthcare or regulated industries.
Skip it if: You need a flat monthly subscription with predictable costs or a fully managed service where the vendor handles setup and ongoing changes.
Test-call log
Status: not yet tested. We run the same 12-call script on every phone product and publish the transcript notes here. Vendors can’t pay to change results.
Retell AI: quick answers
How much does Retell AI cost per month?
Retell AI does not charge a flat monthly fee for its pay-as-you-go plan. You pay per minute of call time, with rates from $0.07 to $0.31 per minute depending on the models and add-ons you select. Additional monthly costs include $8 per concurrent call beyond the 20 free included, $2 per Retell phone number, and $10 per verified phone number.
Does Retell AI offer a free trial?
Yes. Retell AI gives you $10 in free credits at signup with full platform access and no contract. This covers building an agent, simulation testing, and live test calls, along with 20 free concurrent calls. After the credits run out, you pay per minute with no commitment.
What integrations does Retell AI support?
Retell AI lists integrations with Make, Twilio, Vonage, Go High Level, n8n, and Hubspot. It also supports SIP trunking to connect existing phone numbers and telephony systems, and offers APIs and SDKs for custom integrations with CRMs, calendars, and knowledge bases.
Is Retell AI HIPAA compliant?
Yes. Retell AI states it is fully compliant with HIPAA, SOC 2 Type II, GDPR, and ISO 27001. The Enterprise plan includes custom BAA terms, and the platform offers personal info redaction and opt-out recording and transcription.
How does Retell AI handle call transfers to human agents?
Retell AI agents can brief human agents, answer follow-up questions, and confirm they're ready to take over before connecting the customer. Once the call is transferred, the AI voice agent fee stops and only the telephony fee continues for the remainder of the call.
What happens if a call fails to connect?
You are only charged for connected calls. If a call fails to connect, you won't be billed. For calls that reach voicemail, billing applies only for the duration the AI agent is active on the line.
Receipts: the quotes behind this profile
Each line is copied from Retell AI’s own pages and was checked automatically against the page text on 28 October 2026.
| Claim | Vendor’s words |
|---|---|
| Voice agent rates range from $0.07 to $0.31 per minute | $0.07-$0.31 / min for AI Voice Agents |
| $10 in free credits at signup with full platform access | Retell AI gives you $10 in free credits at signup with full platform access and no contract |
| Pay as you go plan includes 20 free concurrent calls | 20 Free Concurrent Calls |
| Enterprise plan has custom pricing | Custom Pricingfor AI Voice Agents |
| Integrations include Make, Twilio, Vonage, Go High Level, n8n, Hubspot | Make Twilio Vonage Go High Level n8n Hubspot |
| Compliant with HIPAA, SOC 2 Type II, GDPR, ISO 27001 | Fully compliant with HIPAA, SOC2 Type II, GDPR and ISO 27001 |
| Billing is per minute tracked to the nearest second with no rounding up | Each call is tracked to the nearest second. At the end of each billing cycle, we charge based on your total accumulated minutes. No rounding up per call |
| AI voice agent fee stops after transfer to human | Once the call is transferred, the AI voice agent fee stops. Only the telephony fee continues for the remainder of the transferred call. |
| Additional concurrent calls cost $8 per call per month | Additional capacity is $8 per concurrent call per month |
| Billing covers silence and hold time | Billing covers the entire duration of the call because the speech-to-text engine remains active and listening throughout, even during silence. |
| Industries named include Healthcare, Financial Services, Insurance, Logistics, Retail & Consumer Goods, Travel & Hospitality, Debt Collection | Healthcare Financial Services Insurance Logistics Retail & Consumer Goods Travel & Hospitality Debt Collection |
| Voice agents support multiple languages | Voice agents can hold conversations in multiple languages |
| AI agents brief human agents before transfer | AI agents can brief human agents, answer follow-up questions, and confirm they're ready to take over before connecting the customer. |
| AI can check availability and book appointments | Book Appointments Check availability and book |
Commercial relationship: none. We have no paid or affiliate relationship with this vendor today. Disclosures.
Where these facts come from
- Retell AI: homepage (retellai.com)
- Retell AI: /pricing (retellai.com)