Retellai

Retellai

Retell AI is a production-ready AI voice agent platform for automating phone calls and building AI-powered call centers that sound human, execute tasks, and scale across inbound and outbound workflows.

Retellai is voice & speech software teams evaluate for voice & speech. Use this page to review pricing, integration signals, and the best alternatives before you commit.

Pricing not listed API 70/100
#78 in Voice & Speech (78 tools)
Just launched
Data reviewed Sep 14, 2026

Profile facts come from the vendor source. AiMatch labels unknown pricing or API details instead of estimating them.

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Quick Overview

Best for: Voice & Speech

What it does

Voice & Speech software for decision-makers comparing workflow fit and alternatives.

Best fit

Voice & Speech

Pricing snapshot

Pricing available on request

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Retellai

Retell AI is an AI voice agent platform designed to automate telephone conversations for modern contact centers. It enables teams to build, test, deploy, and manage AI phone agents that answer inbound calls, place outbound calls, qualify leads, book appointments, check order status, navigate IVRs, perform DTMF/keypad actions, and transfer to humans when needed. The platform targets enterprises and mid-market organizations across industries such as healthcare, financial services, insurance, logistics, retail, travel, and debt collection.

Retell emphasizes production readiness: a visual no-code studio for designing call flows, tools for testing and regression testing against production calls, the ability to deploy across channels (voice, web chat, SMS), and developer APIs/SDKs for deeper integrations. It also highlights enterprise security, compliance (HIPAA, SOC2 Type II, GDPR, ISO 27001), and options for on-prem deployments and professional implementation services.

Retellai helps you build, deploy, and monitor humanlike AI voice agents for inbound and outbound phone automation at scale. Retellai is a AI Tool featured on Dang.ai. Learn more about Retellai's AI tool.

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Key Features

No-code Studio & Visual Call Flow Builder

Design complex call flows on a drag-and-drop canvas with functions, integrations, call transfers, DTMF, SMS, and custom logic.

Testing & Regression

Manually test changes, simulate thousands of scenarios, and convert real production calls into regression tests to catch failures before deployment.

Fast, Low-latency Voice Engine

Proprietary voice AI orchestration with industry-leading responsiveness (~600ms latency) for smooth, human-quality phone conversations.

Ultra-realistic Voices & Turn-taking

Voices trained on real performance data and a turn-taking model that knows when to stop and listen for natural conversation flow.

Deploy Anywhere (Inbound, Outbound, Web, SMS)

Deploy agents for incoming calls, outbound campaigns, web widgets, or SMS without additional tooling.

Outbound Campaigns & Built-in Dialer

Upload audiences, schedule campaigns, control pacing and retries, handle voicemail, and run outbound campaigns at scale.

IVR Navigation & Keypad Handling

Detect IVRs, understand menu options, press digits, and enter extensions to navigate complex phone systems during live calls.

Agentic Human Handoffs & Live Monitor

Agents brief human agents, answer follow-ups, and allow supervisors to listen live and take over calls instantly.

Quality Assurance & Analytics

QA up to 100% of AI calls, build custom analytics from post-call metrics, and compare A/B test results to measure agent performance.

Integrations, APIs & SDKs

Comprehensive APIs and SDKs and native connectors to telephony, CCaaS, CRM, knowledge bases, and calendars for bi-directional context and outcomes.

Enterprise Security & Compliance

Compliance with HIPAA, SOC2 Type II, GDPR, ISO 27001; SSO, personal info redaction, configurable role-based access, and support for on-prem deployments and data residency.

Scale & Reliability

Battle-tested infrastructure built to handle millions of calls and enterprise implementation services for secure deployment.

Pricing

Free Tier Available

Sign up for a free account and receive $10 of free usage on the Retell dashboard.

Use Cases

AI Receptionist

Answer inbound calls, route to the right team, collect caller intent, and escalate to humans with context.

Appointment Setter

Check availability, book appointments, and update calendars automatically during calls.

Lead Qualification

Qualify leads on the phone, gather required information, and create CRM outcomes or route hot leads to sales.

Customer Service & Answering Service

Resolve routine requests (order status, FAQs) end-to-end and write outcomes back to CRMs to reduce manual work.

Debt Collection

Run compliant outbound calls for collections, capture outcomes, and handle follow-ups programmatically.

AI Dispatch & Auto Dialer

Handle dispatch workflows and high-volume outbound campaigns with pacing, retries, and voicemail handling.

AI IVR

Replace rigid menu trees with natural-language interactions that understand caller intent and act accordingly.

Integrations

Twilio

Telephony integration for voice call routing and SMS via major telephony providers.

Vonage

Telephony integration to connect existing phone systems and SIP infrastructure.

GoHighLevel

Connector for marketing and CRM workflows.

n8n

Workflow automation integration to orchestrate data and actions across systems.

HubSpot

CRM integration for reading customer context and writing call outcomes back to records.

SIP Trunking / Telephony

Support for connecting existing phone numbers and infrastructure via SIP trunking.

Benefits

Shorter wait times and 24/7 call answering by AI agents.
Lower cost per call and the ability to scale capacity with volume instead of headcount.
Improved quality and visibility by QA-ing up to 100% of AI calls and surfacing patterns across conversations.
Faster outcomes through CRM context enrichment and automated post-call logging.
Production-ready deployment and enterprise-grade security and compliance (HIPAA, SOC2 Type II, GDPR, ISO 27001).

Limitations

AI agents are designed to augment agents and handle routine, high-volume work — they are not presented as a full replacement for human agents and commonly operate in a hybrid model.
Production deployment requires integration with telephony, CRM, and other systems and may involve professional implementation for enterprise-grade security and data residency.

Frequently Asked Questions

What is an AI voice agent?
An AI voice agent is an autonomous system that can listen, speak, and hold natural phone conversations using speech recognition, large language models, and text-to-speech to understand callers, respond intelligently, maintain context, and take actions such as booking appointments or updating systems.
How do Retell AI voice agents work?
Retell is a real-time conversational AI platform using proprietary voice AI orchestration with low-latency speech recognition, LLM-powered conversation understanding, and real-time function calling. The platform features ~600ms latency, ultra-realistic voices, and a proprietary turn-taking model.
How do I create an AI voice agent with Retell AI?
Sign up for a free account on the Retell dashboard (includes $10 free usage), then customize and configure your agent in the no-code studio and integrate it with your company’s data and workflows.
Can I connect an agent to my existing phone number?
Yes. Retell supports integration with any telephony system through SIP trunking so you can connect existing phone numbers and deploy without changing infrastructure.
Can AI replace call center agents?
No. Retell states AI phone agents handle repetitive, high-volume work and free teams for higher-value conversations. Most deployments run a hybrid model where AI handles routine volume and transfers to humans for complex or empathy-requiring calls.
What can a Retell AI voice agent do on a call?
Agents can answer inbound calls and place outbound ones, qualify leads, book appointments, check order status, navigate IVRs, transfer to live agents when needed, and read/write data to your systems during calls.
What are the main benefits of using an AI call center?
Shorter wait times, calls answered 24/7, lower cost per call, and scalable capacity. The platform also enables more comprehensive QA and analytics across all calls.
Does Retell AI offer multilingual support?
Yes. Voice agents can hold conversations in multiple languages to serve customers in their preferred language without separate staffing.
How does Retell AI connect to my existing tools?
Retell integrates with CRMs, calendars, telephony, and knowledge bases via native connectors and APIs. Agents read customer context before and during calls and write outcomes back automatically.
How is an AI phone agent different from traditional IVR?
Traditional IVR uses fixed menus. Retell AI understands natural speech, lets callers state requests in their own words, resolves simple requests directly, and routes the rest without rigid menu trees.

Getting Started

  1. 1 Sign up for a free account on the Retell dashboard (new accounts receive $10 of free usage).
  2. 2 Use the no-code studio to customize and configure an AI voice agent for your use case.
  3. 3 Integrate with your telephony or connect existing phone numbers (supports SIP trunking) and connect CRMs/calendars/knowledge bases as needed.
  4. 4 Test agents with simulations and regression tests, then deploy for inbound, outbound, web, or SMS channels.

Support

Documentation

Developer documentation and product resources available from the site's Developers and Documentation sections.

Contact Sales

Contact Sales option on the website for pricing, enterprise engagement, and demos.

Email

Support email available: [email protected]

Live Demo / Try For Free

Interactive live demo and a free account trial with $10 of free usage available from the site.

Status & Changelog

Public status and changelog resources are listed in the site's Resources menu for operational transparency.

API

Available: Yes

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