LiveKit Agents Framework vs Retell AI

Detailed side-by-side comparison to help you choose the right tool

LiveKit Agents Framework

🔴Developer

AI Agent Builders

Open-source framework for building real-time voice and multimodal AI agents with speech-to-text, LLM processing, and text-to-speech pipelines.

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Starting Price

Free
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Retell AI

🔴Developer

Voice Agents

Conversational voice infrastructure for call center automation. - Enhanced AI-powered platform providing advanced capabilities for modern development and business workflows. Features comprehensive tooling, integrations, and scalable architecture designed for professional teams and enterprise environments.

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Starting Price

Free
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Feature Comparison

Scroll horizontally to compare details.

FeatureLiveKit Agents FrameworkRetell AI
CategoryAI Agent BuildersVoice Agents
Pricing Plans27 tiers11 tiers
Starting PriceFreeFree
Key Features
    • • Workflow Runtime
    • • Tool and API Connectivity
    • • State and Context Handling

    LiveKit Agents Framework - Pros & Cons

    Pros

    • ✓Most complete open-source voice agent framework
    • ✓Low-latency real-time performance
    • ✓Flexible provider selection per pipeline stage
    • ✓Multimodal beyond just voice
    • ✓Strong LiveKit infrastructure backing

    Cons

    • ✗Requires LiveKit infrastructure (self-hosted or cloud)
    • ✗Voice AI costs add up across STT+LLM+TTS
    • ✗Complexity for simple voice tasks
    • ✗Python-only framework

    Retell AI - Pros & Cons

    Pros

    • ✓Ultra-low latency voice responses under 800ms for natural conversation flow
    • ✓Built-in call transfer, voicemail detection, and IVR navigation capabilities
    • ✓Conversation-level memory persists context across multiple calls with same contact
    • ✓Visual conversation flow builder for designing complex voice agent logic without code

    Cons

    • ✗Complexity grows with many tools and long-running stateful flows.
    • ✗Output determinism still depends on model behavior and prompt design.
    • ✗Enterprise governance features may require higher-tier plans.

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    🔒 Security & Compliance Comparison

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    Security FeatureLiveKit Agents FrameworkRetell AI
    SOC2—✅ Yes
    GDPR—✅ Yes
    HIPAA—✅ Yes
    SSO—🏢 Enterprise
    Self-Hosted—❌ No
    On-Prem—❌ No
    RBAC—🏢 Enterprise
    Audit Log—🏢 Enterprise
    Open Source—❌ No
    API Key Auth—✅ Yes
    Encryption at Rest—✅ Yes
    Encryption in Transit—✅ Yes
    Data Residency——
    Data Retention—configurable
    🦞

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    Ready to Choose?

    Read the full reviews to make an informed decision

    Review LiveKit Agents FrameworkReview Retell AI