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Retell AI

Comprehensive platform for building, testing, deploying, and monitoring AI-powered voice agents.

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About Retell AI

Retell AI offers an API that enables developers to create human-like voice agents. It provides tools to build, test, deploy, and monitor AI voice solutions at scale, with seamless integrations across multiple platforms and services.

How to Use

Use Retell AI’s API and agent builder to develop custom voice agents. Test functionalities with built-in language models. Deploy agents across phone calls, web interactions, SMS, and more. Track performance through a comprehensive call history dashboard.

Features

Post-call performance analysis

Automatic knowledge base synchronization

Customizable branded caller ID

Supports verified phone numbers

Robust Voice AI API

Concurrent call handling

Batch calling capabilities

Drag-and-drop agent builder

Call transfer functionality

Voicemail detection and handling

Intuitive IVR navigation

Automated appointment booking

Use Cases

Debt collection calls

Lead qualification processes

Receptionist automation

Customer support automation

Customer surveys

Appointment scheduling

Best For

Insurance companiesSoftware developersHome service providersLogistics firmsTravel and hospitality brandsProduct managersFinancial institutionsHealthcare organizationsDebt collection agenciesRetailersEngineers

Pros

Flexible pay-as-you-go pricing

Automatic knowledge base updates

Multilingual voice support

Scalable for millions of calls

Easy integration via SIP trunking

Compliance with SOC 2, HIPAA, and GDPR standards

Cons

Requires engineering expertise for initial setup

Some features like verified numbers and branded caller ID are optional add-ons

Concurrent call limits on pay-as-you-go plan (20 calls)

Pricing Plans

Choose the perfect plan for your needs. All plans include 24/7 support and regular updates.

Pay-as-you-go

Start free with no upfront costs; pay only for usage beyond the free tier.

Get Started

Enterprise Plan

Ideal for high-volume needs (over $3k/month), custom data requirements, or dedicated support.

Get Started

Frequently Asked Questions

Find answers to common questions about Retell AI

How can I create an AI voice agent with Retell AI?

Sign up for a free account on the Retell dashboard, receive $10 in free usage, then customize and connect your AI voice agent with your data and workflows.

What is the pricing structure for Retell AI?

Retell offers a pay-as-you-go model starting at $0.07 per minute, with no subscription fees. Costs vary based on voice and language model configurations, with enterprise plans offering discounted rates and dedicated support.

Can I connect Retell AI to my existing phone number?

Yes, Retell supports integration with existing telephony systems through SIP trunking, allowing seamless connection to your current phone numbers.

What technical resources are needed to get started with Retell AI?

You need one engineer for initial system integration and voice agent setup. The process typically takes a few hours to days, after which ongoing management can be handled by your team.

Does Retell AI support handling multiple simultaneous calls?

Yes. Retell supports concurrent calling, enabling your voice agents to manage multiple calls at once. The pay-as-you-go plan includes a quota of 20 simultaneous calls, with options to upgrade as needed.

Can Retell AI detect voicemails during calls?

Absolutely. Retell AI can identify voicemail responses and either terminate the call or leave a pre-recorded or dynamically generated message.

How are call minutes calculated?

Calls are rounded up to the nearest second, and the total time is billed at the end of each billing cycle based on accumulated minutes.

Will I be charged if the caller remains silent?

Yes. Charges apply based on total call duration, even if the caller does not speak, as speech recognition runs throughout the call.

How do I access and customize invoices with my company details?

Invoices are available in the billing section after payment. Ensure your company information is added before billing to include it on your invoices.