Best Retell AI Alternatives

Compare 7 alternatives for 2026

Retell AI is a tool that helps businesses create smart voice assistants to talk with customers on phone calls naturally.

Compare 7 alternatives for 2026

Founded 2023California1-100 EmployeesWeb, Linux, Windows, Mac

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Key Features

API ConnectivityCall LogsData AnalysisInteractive Voice Response (IVR) IntegrationIterative UpdatesKnowledge BaseKnowledge GraphsOnline Appointment bookingReal-Time ProcessingSelf MonitoringThird Party IntegrationsWarm Call Transfer

Top 7 Retell AI competitors

Curated list of the best ai agents tools to replace Retell AI

SleekFlow

Paid

AI Agents

Streamline consumer communication under one comprehensive platform by using SleekFlow software.  

Web, Linux, Windows +3

API ConnectivityBehavior CustomizationCustom Reporting+14

Is SleekFlow a good alternative to Retell AI?

Manus AI

Paid

AI Agents

Manus AI can plan, collaborate, and independently execute complex tasks in the cloud.

Web, Windows, Mac

API ConnectivityAutonomous Problem SolvingAutonomous Task Management+28

Is Manus AI a good alternative to Retell AI?

CrewAI

Freemium

AI Agents

A versatile multiagent AI platform designed for automating complex workflows using coordinated teams of intelligent agents.

Web, Linux, Windows +1

API ConnectivityAudit TrailAutonomous Problem Solving+26

Is CrewAI a good alternative to Retell AI?

Lindy

Paid

AI Agents

An AI tool that lets businesses create smart digital assistants to automate tasks like emails, scheduling, and customer support without coding.

Web, Windows, Mac

API ConnectivityAudit TrailAutonomous Problem Solving+26

Is Lindy a good alternative to Retell AI?

Flowise

Paid

AI Agents

Flowise is an open-source, low-code platform that lets you visually build and deploy AI chatbots, agents, and workflows without coding.

Web, Linux, Windows +1

API ConnectivityAudit TrailAutonomous Problem Solving+33

Is Flowise a good alternative to Retell AI?

Inngest

Paid

AI Agents

An AI agent that helps developers build and run automated workflows triggered by events without managing infrastructure.

Web, Linux, Windows +1

API ConnectivityAudit TrailAutonomous Problem Solving+22

Is Inngest a good alternative to Retell AI?

Glean

AI Agents

Glean uses advanced search and Retrieval Augmented Generation (RAG) technology to generate personalized and relevant answers by connecting all company data.

Web, Linux, Windows +1

API ConnectivityAutonomous Problem SolvingAutonomous Task Management+16

Is Glean a good alternative to Retell AI?

Retell AI — Pros & Cons

Pros

Natural-sounding AI voice agents with low latency enhance user experience
Seamless integrations with platforms like Twilio and Telnyx for easy deployment
Reliable performance at high call volumes, reducing errors and improving scalability
Intuitive flow-building UX with features like batch calling and real-time function calling
Supports over 31 languages with native speech quality for global reach

Cons

Limited mid-tier pricing options may not suit medium-sized businesses
Some users find the dashboard confusing, especially for new users
Certain features, like specific integrations and testing capabilities, are limited
Agents may mispronounce names in languages other than English
Process of integrating automated functions is not very clear to some users

Feature Comparison

Compare Retell AI with top alternatives side by side.

Feature	Retell AI	SleekFlow	Manus AI	CrewAI	Lindy
Pricing	—	Paid	Paid	Freemium	Paid
API Connectivity
Call Logs
Data Analysis
Interactive Voice Response (IVR) Integration
Iterative Updates