Retell AI
About Retell AIRetell AI lets you build human-like voice agents that talk naturally, respond instantly, and feel genuinely conversational.
What Is Retell AI?
Retell AI is a platform that helps you create voice agents that feel human. Unlike typical chatbots or robotic assistants, Retell AI’s agents can have real-time, flowing conversations with people. Thanks to its unique “turn-taking model,” the AI knows when to speak, pause, or let someone interrupt. Just like a real human.
From virtual receptionists to sales reps, Retell AI enables businesses to automate phone calls without losing the personal touch. It integrates easily with existing systems and lets you customise the AI to perform tasks like booking appointments or retrieving customer info.
The ultimate goal? To replace awkward, robotic voice systems with conversations that feel natural, fast, and genuinely human.
Key Features of Retell AI
- Human-like Turn-Taking: The AI can interrupt and be interrupted in natural conversations.
- Ultra-Low Latency: Responds in 800 milliseconds for seamless flow.
- Flexible AI Integration: Supports GPT, Claude, and other LLMs.
- Multi-Platform Deployment: Works on web, mobile, and phone systems, including Twilio.
- Advanced Analytics Dashboard: Tracks sentiment, call success, and more.
Who Can Use Retell AI?
- Developers: Build and integrate realistic voice agents.
- Customer Service Teams: Automate FAQs and inbound calls.
- Sales & Marketing Teams: Run outbound campaigns and qualify leads.
- Businesses of All Sizes: Scale operations and reduce labour costs.
- AI Product Teams: Prototype AI phone systems and interactive assistants.
Why Retell AI Is Better Than Its Competitors?
- Superior Turn-Taking Model: Handles interruptions naturally.
- Sub-Second Responses: Fastest low-latency interactions.
- Flexible Integrations: Connect your LLMs and telephony systems easily.
- Advanced Analytics: Deep insights into calls and customer sentiment.
- Transparent Pricing: Pay-as-you-go with no hidden fees.
German, English, French, Japanese, Korean, Dutch, Polish, Portuguese, Russian, Spanish, Chinese, Hindi, Turkish, Danish
Retell AI is an API-first platform designed for developers and businesses that want voice agents indistinguishable from humans. Its key strength is ultra-low latency and responding in under a second. So, there are no awkward pauses. The AI’s turn-taking model handles interruptions perfectly, ensuring smooth and lifelike conversations.
You can build complex call flows, connect with large language models like GPT or Claude, and integrate with telephony systems like Twilio. Whether automating customer support, outbound sales, or lead qualification, Retell AI can be tailored for any use case.
A powerful analytics dashboard tracks sentiment, call performance, and task completion, helping businesses optimize interactions and improve outcomes like cost savings and customer satisfaction.
2023
Saratoga, United States
Private
Retell AI, Inc. is on a mission to make every voice interaction feel effortless. They build AI that listens, responds in real-time, and creates a human-like experience for businesses and customers.
Backed by top investors and built by an experienced team, Retell AI focuses on low-latency conversations, developer flexibility, and enterprise-grade security.
As a company, Retell AI is also deeply committed to security and transparency. They offer enterprise-grade compliance with standards like SOC 2 and GDPR and provide clear, usage-based pricing. This focus on trust and value, combined with their groundbreaking technology, has earned them a loyal customer base and a reputation for being a reliable and forward-thinking partner in the voice AI space.
Their goal: seamless, realistic conversations that improve customer support, sales, and overall business efficiency.
Pay as you go Plan
Custom
Start instantlyEnterprise Plan
Custom
FlexibleWhat is Retell AI used for?
Retell AI provides a platform for businesses to create and deploy human-like AI voice agents that handle customer support, sales, and other phone interactions.
What is the latency of retell AI?
Retell platform achieves latency as low as 600ms, measured from when the user stops speaking to when the AI agent begins responding. In the agent detail page, under the “Estimated Latency” section, you can view the average latency for the agent. Please note that certain settings will increase latency.
How can I get started with Retell AI?
You can get started with Retell AI by:
- Registering an account on their website.
- Creating your first agent from a template using their low-code or no-code tooling.
- Testing your agent in a web-based playground.
- Deploying your agent to a real phone number.
- Monitoring its performance using the analytics dashboard.
What kind of data does Retell AI use?
Training Data refers to the real-world examples, usually transcripts, audio files, labeled intents, and structured metadata, used to teach AI models how to understand, respond, and act during conversations.
How to retrieve custom post-call data from retell.ai?
Try using the Retell AI “Get a Call” module. If that doesn’t work, then email support@retellai.com or contact the help centre.
Retell AI as a major leap in voice AI. Its human-like turn-taking, low latency, and flexibility set it apart from traditional IVR systems. The platform’s flexibility, allowing for the integration of custom LLMs and existing telephony systems, makes it a powerful and scalable solution for enterprises.Transparent pricing and robust security make it a trusted choice for enterprises looking to automate calls without sacrificing quality.
Pros
- Truly Human Conversations: The AI talks and listens like a real person, making every interaction feel natural.
- Highly Flexible: Easily integrate with your choice of LLMs and telephony systems.
- Transparent Pricing: Pay-as-you-go means no hidden fees, only pay for what you use.
- Powerful Analytics: Track performance, sentiment, and key metrics to improve results.
- Constant Innovation: Regular updates and new features keep the platform cutting-edge.
Cons
- Technical Know-How Required: Full use of the API and advanced customization may need a developer.
- Dependent on Internet: Stable connectivity is essential for smooth performance.
- Usage Costs Can Add Up: High-volume operations may become expensive.
- Language Limitations: Less common languages or dialects may have lower accuracy.
- Initial Setup Effort: Building complex agents and integrations can take time.
Final Verdict
Retell AI is a game-changer for businesses that want voice agents sounding genuinely human. Its real-time, low-latency conversations and smart turn-taking make interactions feel natural. No awkward pauses, no robotic replies. While developers will get the most out of its advanced customization options, any business can benefit from faster, more efficient, and more personal phone interactions. Whether it’s customer support, lead qualification, or sales outreach, Retell AI helps you save time, reduce costs, and delight customers with conversations that actually feel human. For companies that care about quality, natural flow, and measurable results, Retell AI isn’t just a tool. It’s a forward-thinking partner in building meaningful, automated conversations.
CA Tushar Makkar
