Retell AI
Platform for building, testing and deploying AI voice agents that answer and place phone calls.
Retell AI is a platform for creating AI voice agents that handle phone calls. Teams design the conversation on a visual canvas, test it with simulated calls, then deploy the agent for inbound lines, outbound campaigns, web chat or SMS. Retell AI agents can book appointments, transfer callers to staff and write outcomes back to a CRM.
Best for Support, sales and operations teams that want to automate routine phone calls and keep control over the agent's logic and testing.
- Platforms
- Web, API
- Pricing model
- Credits
- API
- Yes
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- Retell AI
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Last verified: . Information taken from retellai.com.
What is Retell AI?
Retell AI is a voice agent platform for automating phone conversations. Agents are assembled in a no-code studio where each step of a call is laid out on a drag-and-drop canvas, with functions, integrations, transfers, keypad input and SMS added as needed. Before launch, changes can be tried manually, run through simulated scenarios or checked against past production calls. Deployed agents answer inbound calls, run outbound campaigns with pacing and retries, navigate other companies' phone menus and brief a human colleague before handing a caller over. Calls are transcribed, and quality assurance and custom analytics can cover every conversation. The platform also supports chat and SMS, exposes APIs and SDKs, and connects to telephony through SIP trunking as well as to CRMs and calendars. Retell AI lists HIPAA, SOC 2 Type II, GDPR and ISO 27001 compliance. Billing is pay-as-you-go by the minute, with an Enterprise plan on custom terms.
Key Features
Visual Agent Builder
Lays out call flows on a canvas and attaches functions, transfers, keypad tones, SMS and custom logic to each step.
Simulation Testing
Runs manual tests and large batches of simulated scenarios, and converts real calls into regression tests.
Human Handoff
Has the agent brief a staff member and confirm readiness before connecting the caller; supervisors can also listen live and take over.
Outbound Campaigns
Uploads a contact list, schedules calls and manages pacing, retries and voicemail from the built-in dialer.
IVR Navigation
Recognises phone menus on the other end, presses digits and enters extensions to reach the right department.
QA and Analytics
Reviews up to all calls for quality and builds custom reports from post-call metrics, including A/B comparisons.
How Retell AI works
Build
Design the call flow on the canvas and connect functions and integrations.
Test
Try changes by hand, simulate scenarios and replay production calls as regression tests.
Deploy
Link phone numbers, launch outbound dialling or place the widget on a website.
Monitor
Review transcripts, run quality checks and track outcomes in analytics.
Screenshots
Videos
Use Cases
- AI Receptionist
- Answer incoming calls, deal with common questions and route the rest.
- Appointment Booking
- Check availability in a calendar and schedule the caller without staff involvement.
- Lead Qualification
- Call new enquiries, ask screening questions and log the answers in the CRM.
- Customer Service Lines
- Handle order-status and similar routine requests, escalating complex cases to people.
- Healthcare Scheduling and Collections
- Automate patient scheduling or payment calls under the platform's compliance controls.
Things to know
- Cost varies with configuration
- The per-minute rate changes with the language model, voice provider, telephony and add-ons selected.
- Additional monthly items
- Phone numbers, SMS, concurrency beyond the first 20 calls and knowledge bases beyond the first 10 carry separate monthly charges.
- Calling rules still apply
- The site notes that outbound AI calls in the United States are subject to consent and disclosure rules such as the TCPA.
- Enterprise deployment options
- On-premises deployment, SSO and custom contract terms are reserved for the Enterprise plan.
FAQs
What is Retell AI?
Retell AI is a platform for building, testing, deploying and monitoring AI voice agents that hold phone conversations.
What is Retell AI used for?
Retell AI is used to automate inbound and outbound calls such as reception, appointment booking, lead qualification, customer service and surveys.
Is Retell AI free?
Paid plan rates are published on retellai.com. Check the official pricing page for current amounts.
How much does Retell AI cost?
Paid plan rates are published on retellai.com. Check the official pricing page for current amounts.
Does Retell AI have an API?
Yes. Retell AI provides APIs, SDKs and webhooks for programmatic control of agents and calls.
Can Retell AI use my existing phone number?
Yes. Retell AI connects to existing telephony through SIP trunking, and it also works with providers such as Twilio and Vonage.
Is Retell AI HIPAA compliant?
Retell AI states that it complies with HIPAA, SOC 2 Type II, GDPR and ISO 27001.
Does Retell AI support multiple languages?
Yes. Retell AI describes multilingual support, meaning an agent can speak with callers in more than one language.
Who it's for
- Contact centers
- Customer support teams
- Developers
- Healthcare providers
- Sales teams
- Enterprises
Comments
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Listed in the same categories as Retell AI. A starting price appears only where we checked it on the maker’s pricing page; a dash means not checked or not published. All Voice Assistants & Speech Recognition tools