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Home/Categories/AI & Machine Learning/LiveKit
icon of LiveKit

LiveKit

Open source alternative to Twilio, LivePerson and Retell AI

LiveKit is open source real-time voice AI infrastructure for building and scaling voice agents and video applications using WebRTC — self-hosted or cloud, Apache 2.0.

10.5K starsPythonApache-2.0Active this month
Visit websiteGitHub repo
image of LiveKit
Contents
  1. 01Who LiveKit is for
  2. 02The problem it solves
  3. 03How it solves it
  4. 04Strengths and trade-offs
  5. 05Install and self-host
  6. 06Tech stack
  7. 07FAQ
  8. 08Similar open-source tools
TL;DR

LiveKit Agents is a server-side framework for building realtime voice and multimodal AI agents. It replaces stitching together separate WebRTC, speech, LLM, telephony, and turn-taking services, with an Apache-2.0 codebase that can run with the wider LiveKit stack. Best for teams building interactive agents that need low-latency audio and video, not just chat messages.Apache-2.0 · Python · 10.5K stars · Active this month

who it's for

Who LiveKit is for#

AI product teams building voice agents

Use LiveKit Agents when the agent must talk, listen, interrupt politely, and share state with a web or mobile client in realtime.

Skip if:

Skip if your workflow is asynchronous support chat or batch content generation.

Developers adding phone-based AI workflows

The SIP integration path makes it suitable for inbound or outbound calling experiences where the AI participant needs model tools and call audio.

Skip if:

Skip if you need a call-center suite with workforce management and reporting out of the box.

the problem

The problem it solves#

Realtime AI agents break down when the media layer, speech pipeline, model calls, and client experience all live in separate systems. Teams often start with a chat API, then discover they need WebRTC rooms, phone calls, interruption handling, and a way to route users to server-side agents. The result is a fragile stack where latency and handoff bugs damage the conversation experience.

how LiveKit solves it

How it solves it#

Realtime agent participants

Runs programmable server-side participants inside LiveKit rooms, so an AI agent can join a session like any other audio or video participant.

Speech and model integrations

Connects STT, LLM, TTS, realtime APIs, and turn detection plugins from one agent framework instead of a custom glue layer.

Telephony and client data support

Works with LiveKit SIP, RPC, and data APIs, which lets agents place or receive calls and exchange structured events with client apps.

strengths · trade-offs

Strengths and trade-offs#

Strengths

  • Built for low-latency mediaThe framework sits on LiveKit WebRTC infrastructure, so voice and video interaction are first-class parts of the agent instead of an add-on to text chat.
  • Apache-2.0 agent frameworkThe repository is Apache-2.0, which gives teams a permissive base for commercial agent applications and self-hosted deployments.

Trade-offs

  • -Realtime systems require infrastructure disciplineVoice agents need media servers, model provider keys, job dispatch, and latency monitoring. A simple chatbot platform is easier if your product only needs text.
install · self-host

Install and self-host#

bash
pip install "livekit-agents[openai,silero,deepgram,cartesia,turn-detector]"
tech stack · detected from GitHub

What it's built on#

Languages
CPython
frequently asked

FAQ#

Is LiveKit Agents open source?

Yes. The LiveKit Agents repository is Apache-2.0 licensed, and the README points to self-hosting the wider LiveKit stack.

Can LiveKit Agents handle voice instead of text only?

Yes. The framework is built for realtime voice and multimodal agents with STT, TTS, LLM, and turn-detection integrations.

Is LiveKit Agents a replacement for Twilio?

It can replace parts of a paid realtime media or telephony stack when you want control over the WebRTC and agent layer. Twilio may still fit teams that only want managed phone infrastructure.

also worth a look

Similar open-source tools#

Hume AI

Hume AI

Empathic voice AI SDK with open source emotional models

79TypeScriptMIT
Firecrawl

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Turn any website into clean markdown or structured JSON for LLMs

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CLI-Anything

CLI-Anything

Empower AI agents with agent-native CLIs

41.7KPythonApache-2.0
supertonic

supertonic

Instantly convert text to speech with customizable options

10.3KSwiftMIT
Jentic Mini

Jentic Mini

Self-host API execution for AI agents

124PythonApache-2.0
Activepieces

Activepieces

Build AI-powered automations and agents without vendor lock-in

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Repository

Stars
10.5K
Forks
3.1K
License
Apache-2.0
Latest
[email protected]
Last commit
20 days ago
Last verified
May 13, 2026
Repo
livekit/agents ↗

Additional details

Language
Python
Open issues
569
Contributors
375
First release
2023

Categories

AI & Machine LearningAPIs & IntegrationCommunication & Collaboration

Tags

AI AgentsAPI InfrastructureDeveloper FrameworkSelf HostedCloud NativeOpen CoreWebSocket ServersLLMOps