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RealtimeKit

Build, voice, video and multi-modal apps without infrastructure headache

A complete toolkit to integrate real-time audio and video communication with near-zero latency globally. With multiple abstraction levels, you can meet your specific product and feature requirements without handling WebRTC complexities and low-level infrastructure plumbing.

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One toolkit for any platform

Platform-ready SDKs that handle the hard parts of WebRTC like connection management, bandwidth adaptation, device handling.

Advanced media features built-in

Easily integrate complex capabilities like recording, transcriptions, and real-time AI participants with simple, clean APIs.

Real-time observability

Get real-time analytics on latency, packet loss, and other critical health metrics to help you identify and solve issues faster.

Network built for real-time

Latency is critical for real-time apps. Anything above ~100ms starts to feel sluggish. RealtimeKit leverages Cloudflare's Anycast network, which spans over 335+ cities and automatically connects users to the nearest server, ensuring consistent performance and ultra low-latency worldwide. 50ms for 95% of the Internet connected population globally, with 11,500+ interconnects including major ISPs and cloud services.

Faster

Slower

RealtimeKit

Perfect for modern real-time applications

You can use RealtimeKit for:
View docs

Audio/Video Apps
Build seamless calling and meeting experiences for any device. Perfect for collaboration, telehealth, proctoring, social apps, gaming, and more.

Voice Agents
With RealtimeKit Agents, build intelligent voice bots, interactive assistants, automated support systems that understand conversational turns and respond in real-time.

AI & Multimodal
Feed live audio and video directly into AI agents, robotics, and multimodal systems, enabling them to see, hear, and interact with the world naturally.

Interactive live streaming
Go beyond one-way broadcasts. Create dynamic live experiences with co-hosting, live shopping, watch parties, and massive audience participation at any scale.

Media processing
Turn raw streams into actionable insights. Automate recording, transcription, translation, and summarization for use cases like security, surveillance, and content analysis.

Cloudflare RealtimeKit delivers ultra-low latency communication at global scale

Build voice, video, and multimodal applications with near-zero latency worldwide. RealtimeKit handles WebRTC complexities, connection management, and global routing — letting you focus on creating great user experiences instead of managing real-time infrastructure.

meeting.tsx agent.ts

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import { useEffect } from 'react';import { useRealtimeKitClient, RealtimeKitProvider } from '@cloudflare/realtimekit-react';import MyMeeting from './my-meeting';export default function App() { const [meeting, initMeeting] = useRealtimeKitClient(); useEffect(() => { initMeeting({ authToken: '<auth-token>', defaults: { audio: false, video: false, }, }); }, []); return ( <RealtimeKitProvider value={meeting} fallback={<i>Loading...</i>}> {/* Render your UI here. Subcomponents can now use the `useRealtimeKitMeeting` and `useRealtimeKitSelector` hooks */} <MyMeeting /> </RealtimeKitProvider> );}

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import { RealtimeKitClient } from '@cloudflare/realtimekit-js';const client = new RealtimeKitClient({ authToken: 'your-auth-token',});// Create a voice agent sessionconst agentSession = await client.createAgentSession({ agentId: 'support-agent-001', capabilities: { speechToText: true, textToSpeech: true, naturalLanguageProcessing: true, },});// Handle incoming voiceagentSession.on('voiceInput', async (audioData) => { // Process voice input with AI const transcription = await agentSession.transcribe(audioData); const response = await agentSession.processIntent(transcription); // Generate and send voice response const audioResponse = await agentSession.synthesize(response); agentSession.sendAudio(audioResponse);});// Start the sessionawait agentSession.start();

Write less code, use UI Kit to deliver complete conferencing experience in minutes
Use pre-built UI components to quickly build complete conferencing experiences.

Voice Agent Integration
Build intelligent voice agents that can understand conversational turns and respond in real-time. This example shows how to integrate RealtimeKit Agents for automated support systems.

RealtimeKit Pricing

Serverless WebRTC conferencing. View Media pricing details

Component

Free

Paid

Audio/Video Participant

Free

—

Paid

$0.002 / minute

Audio-Only Participant

Free

—

Paid

$0.0005 / minute

Export (recording, RTMP or HLS streaming)

Free

—

Paid

$0.010 / minute

Export (recording, RTMP or HLS streaming, audio only)

Free

—

Paid

$0.003 / minute

Export (Raw RTP) into R2

Free

—

Paid

$0.0005 / minute

Transcription (Real-time)

Free

—

Paid

Standard model pricing via Workers AI

Powerful primitives, seamlessly integrated

Built on systems powering 20% of the Internet, RealtimeKit runs on the same infrastructure Cloudflare uses to build Cloudflare. Enterprise-grade reliability, security, and performance are standard.

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Compute

Browser Run Automated browsers

Containers Any language, anywhere

Durable Objects Stateful compute

Sandboxes Secure code execution

Workers Global serverless functions

Workers for Platforms Programmable Platform Solutions

Workflows Process orchestration

Storage

Artifacts Git-native versioned storage

D1 Serverless SQL

Data Platform Ingest, Catalog & Query

Hyperdrive Global databases

Queues Message processing

R2 Egress-free storage

KV Ultra-fast key-value storage

AI

Agents Build stateful AI agents

AI Gateway AI observability

AI Search Instant retrieval

Vectorize Vector database

Workers AI Edge AI models

SASE / Zero Trust

SASE Cloudflare SASE platform

Access Zero trust access to private resources

CASB SaaS and cloud posture

Data Loss Prevention Protect sensitive data

Gateway Web filtering

Browser Isolation Secure web browsing

WAN Cloud-delivered networking

Email Security Phishing protection

Security

DDoS Protection Mitigation Solutions

Rate Limiting Abuse prevention

SSL Secure Your Site with SSL

Turnstile A CAPTCHA Replacement Solution

WAF Web Application Firewall

Magic Transit DDoS Protection for Networks

Client-Side Security Prevent browser supply chain attacks

Bot Management Block bad bots

Network & Content Delivery

CDN Faster delivery & caching

DNS Fast DNS

Load Balancing Zero downtime

TURN / SFU Real-time infra

Analytics Web Performance & Security

Build without boundaries

Join thousands of developers who've eliminated infrastructure complexity and deployed globally with Cloudflare. Start building for free — no credit card required.

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No cold starts or region complexity SASE and Zero Trust without the complexity Deploy to 330+ cities instantly Defend against the Internet's biggest DDoS attacks Predictable pricing without surprises Identity-aware Zero Trust access that retires your VPN Battle-tested infrastructure powering millions CDN, WAF, and DNS faster than the public Internet No cold starts or region complexity SASE and Zero Trust without the complexity Deploy to 330+ cities instantly Defend against the Internet's biggest DDoS attacks Predictable pricing without surprises Identity-aware Zero Trust access that retires your VPN Battle-tested infrastructure powering millions CDN, WAF, and DNS faster than the public Internet

Getting started
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Company
About Careers Investors Press Press kit Global network

Public interest
Project Galileo Athenian Project Cloudflare for Campaigns Project Fairshot Impact/ESG

Compliance
Compliance resources Trust Hub Data Protection Responsible AI Transparency report Report abuse

Resources
App innovation report Cloudflare Radar Case studies Status Support Events Blog

Developers
Documentation Learning center Community

Solutions
SSE and SASE platform Cloudflare AI Cloud AI Security Frontend Development Platform Multi-Tenant Platform Development Web Security Platform

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