LiveKit

Build voice, video, and physical AI agents

An open source framework and developer platform for building, testing, deploying, scaling, and observing agents in production.

Powering billions of calls in production for: OpenAI Skydio SpaceXAI Nvidia Salesforce
Voice AI Video AI Robotics

OpenAI built ChatGPT’s Advanced Voice on LiveKit Cloud, used by millions of users around the world every day.

✓ Run millions of concurrent calls
✓ Automatic turn detection and interruption handling
✓ Deploy and scale agents with LiveKit Cloud
✓ Simple and Powerful APIs

Developer platform

Quickly build voice agents

session = AgentSession(
  stt="deepgram/nova-3",
  llm="google/gemma-4-31b-it",
  tts="cartesia/sonic-3",
  turn_detection=MultilingualModel()
)

Voice AI quickstart

Build a simple voice agent with Python or Node.js in less than 10 minutes.

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Voice agent starter apps

Bring your agent to life through a web or mobile app.

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Integrate with telephony

Enable your voice agent to make or take phone calls.

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Deploy to LiveKit Cloud

Run your agents on LiveKit's global realtime infrastructure.

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Developer platform

The complete stack for Voice AI

Open source framework to build and test agents
Inference gateway to access TTS, LLM, and STT models
Cloud platform for deploying and scaling agents
Phone numbers and SIP integrations for telephony
Full-stack observability for every agent session

Explore the LiveKit Cloud platform

How it works

  1. User speaks to agent via app, browser, or phone call
  2. User speech is streamed from device to agent
  3. Agent receives user speech and runs your custom business logic
  4. Agent responds back to the user

View documentation · livekit/agents

Built for scale

Enterprise grade infrastructure

GDPR ✓SOC 2 Type 2 ✓HIPAA ✓
99.99%Uptime
100msGlobal latency
300,000+Developers
3,000,000,000+Calls annually
19+Regions globally

Chosen by Innovators

From startups to industry giants

Reliability and accelerating time to production often seem at odds, but with LiveKit’s Agent Platform, we achieved both. Walker WardPrincipal Software Engineer, Podium
We recently moved from a homegrown WebSocket stack to LiveKit Cloud, allowing us to flexibly integrate with telephony systems. Zexia ZhangCTO, Retell AI
Not having to worry about our ability to scale has been massive. We just have LiveKit worry about that scaling for us. Ari BorenszteinCo-founder & CTO, Playback
LiveKit enables us to very granularly fine-tune our agent code for every workflow and use any model provider. Jeffery LiuFounder & Co-CEO, Assort Health

Ready to build?

Start building a voice AI agent with a free account. Reach out to us if you're interested in custom pricing.

Contact sales

No credit card required • 1,000 free agent session minutes monthly