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Retellai

Supercharge your Call Operations with Voice AI

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Open Source AI Voice Agent SDK

Integrate voice into your apps with VideoSDK's AI Agents. Connect your chosen LLMs & TTS. Build once, deploy across all platforms.

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Overview

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Retellai provides a robust platform for building, testing, deploying, and monitoring AI voice agents at scale. Enhance your call operations by automating tasks, improving efficiency, and delivering human-like conversational AI. Designed for reliability and effortless scalability, Retellai can efficiently handle high call volumes while ensuring an exceptional customer experience.

How It Works

  • Build: Create custom voice AI agents with an intuitive agent builder and a powerful voice AI API.
  • Test: Ensure seamless handling of edge cases with comprehensive testing features, including built-in LLM test capabilities.
  • Deploy: Easily launch your agents on phone calls, web calls, SMS, and more.
  • Monitor: Track performance metrics like success rates, latency, sentiment, and identify failed calls with the call history dashboard.

Use Cases

Automate Receptionist Duties
Let AI-powered agents handle and route incoming calls, improving response time and freeing up human staff for complex tasks.
Streamline Appointment Scheduling
Automate appointment setting and confirmations with natural language interactions, reducing scheduling friction for customers.
Lead Qualification & Customer Service
Automatically qualify leads, answer common inquiries, survey customers, and resolve service issues at scale.

Features & Benefits

  • Auto-Sync Knowledge Base for up-to-date agents
  • Powerful Call Transfer with custom handoff messages
  • Easy Appointment Booking with integration (e.g., Cal.com)
  • Navigate IVR systems effectively
  • Display Branded Call ID for trust and satisfaction
  • SIP Trunking—connect to any telephony/VOIP provider
  • Batch Calling with no concurrency limits
  • Verified Phone Numbers to prevent spam labeling
  • Voice AI API for low-latency, empathetic conversations
  • Multilingual Support (18+ languages, global dialing)
  • Effortless Scalability for high call volumes
  • Reliable & Stable Platform (99.99% uptime, effortless fallback)
  • Fully Compliant: SOC 2 Type 1&2, HIPAA, GDPR
  • Seamless Integration with tech stack/CRMs like Hubspot & Zendesk

Target Audience

  • Companies requiring scalable, production-ready AI voice agents
  • Businesses with high call volumes and complex workflows
  • Organizations aiming to improve efficiency, reduce operational strain, and enhance customer satisfaction
  • Enterprises in industries such as healthcare, customer support, sales, and service operations
  • Companies needing integration with telephony systems (Twilio, RingCentral, etc.) and CRMs/support platforms (Hubspot, Zendesk)
  • Enterprises with specific deployment, data, or support needs

Pricing

Pay as you go:
  • $0 to start, includes 60 minutes free
  • 20 concurrent calls and 10 Free Knowledge Bases
  • Onboarding demo repo, Discord/community support
  • Detailed Per-Minute Pricing:
    • Voice API: ElevenLabs ($0.07), PlayHT/OpenAI ($0.08)
    • LLM Agent: Retell LLM (from $0.006 to $0.50), Claude 3 models ($0.012+)
    • Telephony: Retell Twilio ($0.015), Your Twilio (No charge)
    • Knowledge Base: $0.005
  • Add-Ons: Phone Numbers ($2/mo), Extra Knowledge Base ($8/mo after 10 included)
Enterprise Plan:
  • For large volumes and custom needs
  • Everything in Pay as you go, plus volume discounts (as low as $0.05/min)
  • Custom concurrent call limits
  • Premium Slack channel/dedicated support

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