LiveKit
Open-source, scalable Voice AI infrastructure
Developer APIs
LiveKit is an open-source, developer-focused platform for building real-time voice and video AI agents, offering robust APIs and infrastructure for low-latency, scalable communication. Designed for backend engineers, AI developers, and enterprises, LiveKit eliminates months of custom engineering by providing a production-ready, highly customizable voice AI stack. Its core value proposition is the ability to deploy, manage, and scale voice agents with sub-100ms latency, advanced observability, and enterprise-grade compliance, all while avoiding vendor lock-in.
LiveKit voice agent solutions are trusted by leading companies like OpenAI and Skydio, powering billions of calls annually. The platform supports a wide range of use cases, from conversational AI and telephony to robotics and healthcare, with transparent livekit pricing, extensive livekit API support, and a vibrant open-source community. Developers seeking livekit alternatives or researching livekit reviews will find LiveKit excels in flexibility, technical depth, and cost efficiency for real-time AI-driven applications.
Quick facts
Tool Name
LiveKit
Website
livekit.io
Category
Developer APIs
Primary Use Case
Building, deploying, and scaling real-time voice and video AI agents for applications requiring low-latency, high-concurrency, and advanced customization.
API Availablity
Comprehensive REST and WebSocket APIs, SDKs for JavaScript, TypeScript, Python, Go, Swift, and Rust.
Typical Users
Backend engineers, AI/ML developers, platform architects, CTOs, and product teams at AI-first companies, robotics firms, telehealth providers, and real-time SaaS platforms.
Pricing Model
Hybrid: Free tier, fixed monthly plans ($0, $50, $500+), and granular usage-based pricing (e.g., $0.01/min agent session, $0.0005/min WebRTC, $0.004/min SIP). Enterprise custom pricing available.
What
LiveKit
Does
LiveKit orchestrates real-time voice AI pipelines by integrating speech-to-text (STT), large language models (LLM), and text-to-speech (TTS) in a seamless, low-latency workflow. Developers can deploy agents that transcribe audio, process natural language, and generate lifelike speech responses, all managed through a unified API and observability dashboard.
Developers typically build:
- AI voice agents for customer support and sales
- Conversational IVR and telephony bots
- Real-time voice assistants for SaaS and mobile apps
- Remote robotics and drone control interfaces
- HIPAA-compliant healthcare intake and triage systems
- Live streaming and collaborative communication tools
Key Features
Ultra-Low Latency Infrastructure
LiveKit's SFU-based architecture delivers sub-100ms latency for real-time voice and video, supporting millions of concurrent sessions globally.
Unified Inference API
Access leading LLMs, STT, and TTS providers (OpenAI, Google, Deepgram, ElevenLabs, etc.) through a single API key, with granular per-minute pricing.
Telephony & SIP Integration
Native support for PSTN, SIP trunking, and phone number provisioning enables seamless voice agent deployment across web, mobile, and traditional telephony.
Advanced Observability & Analytics
Built-in dashboards, session recordings, and turn-by-turn event logs provide deep insights into agent performance, latency, and user interactions.
Open-Source & Self-Hosting Flexibility
Developers can self-host the entire stack or use LiveKit Cloud for managed deployments, ensuring full control and avoiding vendor lock-in.
Common Use Cases
Healthcare Intake & Triage
Deploy HIPAA-compliant voice agents to automate patient intake, appointment scheduling, and triage over phone or web.
AI-Powered Customer Support
Build scalable voice agents for 24/7 customer service, reducing wait times and operational costs.
Robotics & Remote Operations
Enable ultra-low-latency voice and video control for drones, robots, and industrial automation systems.
Advanced Observability & Analytics
Upgrade legacy IVR systems with AI-driven, natural language voice agents for improved caller experience.
Real-Time Collaboration Tools
Integrate live voice and video chat into SaaS platforms for team collaboration, gaming, or education.
Real-Time Collaboration Tools
Integrate live voice and video chat into SaaS platforms for team collaboration, gaming, or education.
Alternatives
Smallest AI
Visit
AGI agents under 10B parameters for ultra-fast, accurate speech and text conversations.
Scale to billions of enterprise interactions with minimal latency
Frequently Asked Questions
What is LiveKit pricing for voice agents?
LiveKit offers a free tier with 1,000 agent session minutes monthly, then charges $0.01 per minute for additional usage. Paid plans start at $50/month (Ship) and $500/month (Scale), with granular per-minute pricing for LLM, STT, TTS, and telephony.
How does the LiveKit voice agent pipeline work?
LiveKit voice agents use a real-time pipeline: incoming audio is transcribed via STT, processed by an LLM for reasoning and response, then synthesized back to speech with TTS. All steps are managed through a unified API and observability dashboard.
Which LLMs and APIs does LiveKit support?
LiveKit supports OpenAI (GPT-4, GPT-5, GPT-4o), Google Gemini, DeepSeek, Moonshot, Qwen, and more, accessible via a unified inference API. SDKs are available for major languages, and developers can self-host or use managed cloud deployments.
What are the best LiveKit alternatives and how do reviews compare?
Top LiveKit alternatives include Twilio, Agora, Daily, 100ms, and Vapi. LiveKit reviews highlight its open-source flexibility, low latency, and developer-centric APIs, but note a steeper learning curve and limited presence on traditional review sites.
