Retell AI

Best AI Voice Agent Platform

Best AI Voice Agent Platform
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Retell AI

Visit Website
Submit a review

Overview

Founded in 2023, Retell AI is built by a tight-knit team of founders with rich backgrounds at Google, Meta, TikTok, ByteDance, and more. We launched publicly in early 2022, were accepted into Y Combinator in November 2023, and raised $4.6M in seed funding in May 2024 to propel innovation further.

Retell AI's mission is to transform how businesses connect with customers—creating AI voice agents that break communication barriers and create smoother, more responsive experiences.

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Retell AI Features

Webhooks
Human-Like Interaction
Multi-modal bots supporting text and voice interactions
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Specifications

Company

Retell AI

2023

Palo Alto, United States

Categories
Voice AI Agents

Language Supported

English

German

Spanish

French

Russian

Portuguese

Suitable For

StartUps

SMB's

Enterprises

Supported Platforms

Browser-based

Customer Support

Email

Knowledge Base

Video

Social Media

Media

media image
thumb

Use Cases

Appointment Setter

Lead Qualification

Restaurant Receptionist

Property Management

Team

John Apex
Designer
Michael Newport
Product Designer

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FAQ

Retell AI is an AI-native, no-code platform for building human-like voice agents powered by models like GPT‑4o, enabling natural voice conversations for customer support, appointment booking, and more.

Retell offers a pay-as-you-go model with no platform fees. You get $10 in free credits, 20 free concurrent calls, and 10 free knowledge bases to start. Detailed per-minute charges apply based on voice engine, LLM, and telephony usage.

Yes! You can personalize the agent’s tone, accent, voice, and even behavioral traits to match your brand voice, while supporting multilingual and interruption handling.

Seamless integration options include telephony providers like Twilio, Vonage, SIP/Cal.com, and CRM/workflow tools via APIs—ideal for embedding agents in existing systems.

Customers have reported up to 80% cost reductions in call handling, 24/7 availability, and high-quality voice response with ~800ms latency, all contributing to elevated CSAT and operational efficiency.

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