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The all-in-one
Voice AI platform

Build, deploy, and scale realtime agents.
Open source. Enterprise grade.

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Open source voice agent framework
Ultra low-latency edge infrastructure
SOTA Voice AI tools and research
Powering billions of calls in production for:
Open AI
Speak AI
xAI
Character AI
Hello Patient

LiveKit Cloud powers ChatGPT’s Advanced Voice Mode for millions of users around the world, every day.

Run millions of concurrent calls
Automatic turn detection and interruption handling
Self-host or deploy agents to LiveKit Cloud
Simple and Powerful APIs

Quickly build voice agents 

1session = AgentSession(
2  stt=deepgram.STT(),
3  llm=openai.LLM(model="gpt-4o"),
4  tts=cartesia.TTS(),
5  vad=silero.VAD.load(),
6  turn_detection=turn_detector.EOUModel(),
7)
1
Voice AI quickstartBuild a simple voice agent with Python in less than 10 minutes.
Web and mobile frontend guidesBring your agent to life through a web or mobile app.
Integrate with telephonyEnable your voice agent to make or take phone calls.
Agents playgroundA virtual workbench to iterate on and test your voice AI agents.

How it works

1
User speaks to agent via app, browser, or phone call
2
User speech is streamed from device to agent via LiveKit Cloud
3
Agent receives user speech and runs your custom business logic
4
Agent generates and streams speech back to user via LiveKit Cloud
Built for scale

Enterprise grade
infrastructure

GDPR
HIPAA
SOC 2 Type 2
99.99%Uptime
100msGlobal latency
3 billionCalls annually
100K+Developers
Chosen by Innovators

From startups to industry giants

View all customers
View all customers
Podium logo

Reliability and accelerating time to production often seem at odds, but with LiveKit’s Agent Platform, we achieved both! Its ease of use, feature-rich and flexible architecture, and production-ready infrastructure allowed us to deploy our voice agents with confidence.

Walker Ward Principal Software Engineer, Podium
X
LFG. Livekit is goated
Alex Cohen @anothercohen
Link to X post
X
LiveKit has a lot to offer. one of the best platforms out there for real-time AI integrations and communication systems.
Mojibola Olalekan @Ola_dev01
Link to X post
Retell AI logo

We recently moved from a homegrown WebSocket stack to LiveKit Cloud, allowing us to flexibly integrate with telephony systems and offer a unified export interface across web and phone calls. This upgrade also lets us deliver low latency calls to a global end-user base.

Zexia Zhang CTO, Retell AI
X
Infrastructure for realtime voice assistants. The demo (kitt.livekit.io) is 🔥
Guillermo Rauch @rauchg
Link to X post
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damn @livekit python sdk for tts and set was so smooth
Ivan Leo @ivanleomk
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Playback

Not having to worry about our ability to scale has been massive. We just have LiveKit worry about that scaling for us and have a predictable cost.

Ari Borensztein Co-founder & CTO, Playback
Link to Playback customer testimonial
X
In the midst of our huge Arcana launch, the @livekit team jumped in, shipped new code, and shaved some meaningful latency off our homepage live chat demo. 

This team is cracked. 

A little delayed but wanted to give them a proper public shoutout!
Lily Clifford @lilyjclifford
Link to X post
X
I'm making my first voice AI agent with:
- @livekit, makes it 10x easier
- @OpenAI for LLM and voice
- @DeepgramAI for speech detection
- @Railway for hosting
- @twilio for telephony

I have tried a few no-code tools, but they don't have the flexibility and reliability of code… pic.twitter.com/yvbugxELee
— Amir Ranjbar (@arro_sh) May 19, 2025
Amir Ranjbar @arro_sh
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Retell AI logo

We recently moved from a homegrown WebSocket stack to LiveKit Cloud, allowing us to flexibly integrate with telephony systems and offer a unified export interface across web and phone calls. This upgrade also lets us deliver low latency calls to a global end-user base.

Zexia Zhang CTO, Retell AI
X
This is great "end of turn" detection by @livekit.

Going to see if I can get this running client-side in a browser today.https://t.co/ilmtrrewyN
jtgi @jtgi
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Learn to build conversational AI voice agents in "Building AI Voice Agents for Production", created in collaboration with @livekit and @realavatarai, and taught by @dsa (Co-founder & CEO of LiveKit), @shayneparlo (Developer Advocate, LiveKit), and @nedteneva (Head of AI at… pic.twitter.com/al8xAojqvW
Andrew Ng @AndrewYNg
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Ready to build?

Start building your realtime application with a free account. Ping us if you're interested in custom pricing.

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No credit card required • 50GB free monthly