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InfraLiveKit, Inc.

LiveKit

Open-source framework and cloud for realtime voice, video, and physical AI agents.

Categories
InfraVoiceAgent
Pricing
FREEMIUM
Source
Open core
Hosting
Hybrid
Platforms
WebAPICLI
Models
Model-agnostic
Verified
Jun 13, 2026

LiveKit is the realtime infrastructure layer most voice-AI stacks are built on. Its open-source Agents framework wires together streaming speech-to-text, an LLM, and text-to-speech with reliable turn detection, interruption handling, and telephony, so agents can join a session and converse in near real time. You bring your own STT, LLM, and TTS providers; LiveKit handles the low-latency WebRTC transport. It runs self-hosted under Apache 2.0 or as a managed cloud platform.

Capabilities 5

What it actually does — grouped by capability family.

  • Voice agent (primary capability)
  • Tool / function calling (secondary capability)
  • App / agent deployment (secondary capability)
  • Transcription (STT) (secondary capability)
  • Speech synthesis (TTS) (secondary capability)

Pros & cons

  • Powers ChatGPT Advanced Voice in production
  • Self-hostable, with telephony built in
  • BYO STT/LLM/TTS — no model lock-in
  • Reliable turn detection and interruptions
  • Managed cloud option alongside the OSS
  • Developer infrastructure, not a no-code product
  • You assemble and pay for STT/LLM/TTS separately
  • Realtime media ops add operational complexity

Tags

Further reading

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Open LiveKit