Overview
Retell AI is a voice-agent platform for customer calls and operational workflows.
What Retell AI does
Retell AI is a platform for building and operating voice agents for business phone calls. Teams use it for reception, appointment setting, customer service, qualification, dispatch and collections, with tools for both inbound calls and outbound campaigns.
A visual builder combines conversation logic with knowledge bases, functions, transfers, DTMF and integrations. Agents can check availability, book appointments and retrieve information from connected systems. Deployments can use phone numbers, web experiences, SMS and batch calling.
Testing includes simulated scenarios and regression tests based on production calls. Post-call analysis and quality-assurance tools measure outcomes and identify failures for operators to address. Customers can build directly or work with a certified solution partner; voice pricing varies with the selected model, voice and optional features.
Pricing
Published plans and engagement options.
- Voice agents
- $0.07–$0.31/min
- Pay-as-you-go rate varies by model, voice and selected features. Telephony and optional additions affect the configuration.
- Chat agents
- From $0.002/message
- Usage-based chat pricing.
- Enterprise
- Custom
- Deployment, scale and support arrangements are scoped with sales.
Company details
- Headquarters
- San Francisco, California, United States
- Founded
- 2023
- Team size
- 50 (YC-listed team)
- Stage
- Seed
- Funding
- $4.6M Seed
Founders & leadership
Investors & backers
Retell AI reports a $4.6M seed round backed by Alt Capital and angel investors.
- Alt Capital




