- Home
- Voicebot Software
- Retell AI
Retell AI
What it is
Retell AI is a platform for building, deploying, and managing AI agents that communicate by phone, with additional support for web and in-app chat, SMS, and API-based custom experiences. A visual canvas lets teams assemble call flows using functions, integrations, transfers, DTMF, SMS, and custom logic. Agents can handle inbound calls and outbound campaigns, navigate IVR, and be monitored live; calls can also be transferred to a person. Deployment options include web and SMS, as well as a website widget. Teams can simulate scenarios, turn production calls into regression tests, and QA calls. Retell lists integrations including Twilio, HubSpot, Salesforce, Zapier, Make, n8n, and Google Workspace. The Pay as you go plan is listed at $0.07 a month, with AI voice agents priced at $0.07-$0.31 per minute; it includes $10 in free credits and 20 concurrent calls. The homepage lists HIPAA, SOC 2 Type II, GDPR, and ISO 27001 compliance. Enterprise on-prem deployment is available within a customer's infrastructure.
For and against
For
- Handles both inbound and outbound calls.
- Supports transfer to a human.
- Includes simulation testing and call analytics.
- Supports web, in-app chat, SMS, and API experiences.
Against
- Pay as you go includes 20 concurrent calls.
- Additional concurrent capacity costs $8 per call monthly.
- Call billing includes silence or hold time while speech-to-text remains active.
The verdict
Retell AI combines voice-agent building, deployment, call monitoring, and human transfer with chat and SMS options. Consider the listed per-minute voice pricing and concurrent-call allowance when estimating usage.
Who it suits
It suits teams building automated phone agents for inbound support or outbound campaigns, especially those needing call-flow controls and handoff to people. Its chat, SMS, API, and enterprise deployment options may also fit teams working across communication channels or infrastructure requirements.
Plans and prices
Enterprise
Custom pricing · High cap on concurrent calls · Custom SSO · Role-based access control
Read 19 Sep 2026 · retellai.com
Pay as you go
$10 in free credits · 20 concurrent calls · Community and Email Support
Read 11 Oct 2026 · retellai.com
Enterprise Plan
No Cap on Concurrent Calls · 24/7 Omnichannel Support with Dedicated Portal · Custom SSO
Read 11 Oct 2026 · retellai.com
On the record
- Access controls
- The homepage lists single sign-on, user-defined personal information redaction, and configurable module-level role permissions.retellai.com · read 11 Oct 2026
- Agent building
- Its visual drag-and-drop canvas supports call flows with functions, integrations, transfers, DTMF, SMS, and custom logic.retellai.com · read 11 Oct 2026
- Billing detail
- Call duration is tracked to the nearest second, and billing covers silence or hold time while the speech-to-text engine remains active.retellai.com · read 11 Oct 2026
- Call handling
- Features include outbound campaigns, IVR navigation, live call monitoring, and human takeover or transfer.retellai.com · read 11 Oct 2026
- Channels
- The platform supports voice calls, web and in-app chat, SMS, and custom communication experiences through an API.retellai.com · read 11 Oct 2026
- Company milestone
- Retell's company page says its team was accepted into Y Combinator in November 2023.retellai.com · read 11 Oct 2026
- Deployment
- Agents can be deployed for inbound calls, outbound campaigns, web, and SMS, including through a website widget.retellai.com · read 11 Oct 2026
- Enterprise deployment
- Retell says its Enterprise on-prem option deploys within a customer's infrastructure for security and data residency requirements.retellai.com · read 11 Oct 2026
- Integrations
- The integrations directory lists Twilio, GoHighLevel, HubSpot, Salesforce, Zapier, Make, n8n, and Google Workspace.retellai.com · read 11 Oct 2026
- Product
- Retell describes its platform as a tool to build, deploy, and manage AI voice agents for phone calls.retellai.com · read 11 Oct 2026
- Security
- The homepage states that Retell is compliant with HIPAA, SOC 2 Type II, GDPR, and ISO 27001.retellai.com · read 11 Oct 2026
- Testing and QA
- Teams can simulate thousands of scenarios, turn production calls into regression tests, and QA up to 100% of calls.retellai.com · read 11 Oct 2026
- Twilio integration
- Connecting Twilio over elastic SIP trunking lets agents use numbers already owned in Twilio and supports two-way SMS on connected numbers.retellai.com · read 11 Oct 2026
- Usage limits
- The pricing page says every account includes 20 concurrent calls and additional capacity costs $8 per concurrent call per month.retellai.com · read 11 Oct 2026
