Chat API and SDKs

Build production-ready chat in minutes

Powerful chat API and SDKs with highly customizable, ready-to-go chat UIs. Rapidly build scalable in-app messaging that drives user engagement and retention for websites and mobile apps.
Hey! Is this backpack still available?2m
urbanbackpack.jpg (90 KB)2m
Hi! Yeah, it's still available, you can get it for $125. Would that work for you?
1m
That's a bit priceyJust now
What about $100?Just now
Deal!
Just now
Say something...Deal!
Trusted by startups to enterprises
Classtime
Decathlon
EliseAI
Hyundai
Riot Games
British Gas
VU Amsterdam
Arkadium
Caspar
Styleseat
Xolo
Itemku
Classtime
Decathlon
EliseAI
Hyundai
Riot Games
British Gas
VU Amsterdam
Arkadium
Caspar
Styleseat
Xolo
Itemku
All the features you need for high-performance chat

Build an in-app messaging experience your users actually love. Everything you need to drive engagement and retention, powered by a fast, reliable messaging infrastructure.

Rory
What month works best for a team meetup?
September works for me!
Replies
Keep conversations organized with threaded replies. Let users respond directly to specific messages for clearer, more contextual chats.
Avatar
Olivia Williams
2m ago
00:15
1x
Voice messages
Let users add a personal touch with voice notes. Low-latency infrastructure ensures lag-free playback.
Hey @adam are you available for a call this afternoon after 2PM?
Mentions
Get the right attention with @mentions. Notify specific users in group chats and highlight important messages.
Avatar
Eric Lo
20m ago
Good morning from sunny Tokyo.
The cherry blossoms are here!
Sun emoji
Cherry blossom emoji
Emoji reactions
Make chats more expressive with emoji reactions. Users can quickly respond to messages with a tap—no typing needed.
https://www.wikipedia.org/
Wikipedia logo
Wikipedia, the free... Wikipedia is a free online encyclopedia, created and edited... wikipedia.org
Link previews
Turn plain URLs into rich content. Automatically generate link previews with titles, descriptions, and thumbnails for a more engaging chat experience.
This looks fantastic! Great wor
Cancel
Save
Edit messages
Give users control with message editing. Let them quickly fix typos or update content without disrupting the conversation flow.
Additional features
  • Private 1-1 chat
  • Group chat
  • Large public group chat
  • AI chatbot integration
  • Notifications
  • Threads
  • Read receipts
  • Message search
  • Conversation search
  • Persistent message history
  • File sharing
  • Media attachments
  • Typing indicator
  • Message translation
  • Announcements
  • Admin messages
  • Moderation
  • Mute user in channel
  • Ban user
  • Block user
  • Flag messages
  • Profanity filter
  • Spam protection
  • Domain filter
  • Silent messages
  • Location sharing
  • Presence indicators
  • Unread message count
  • UI localization
  • Custom message actions
  • Custom message types
  • Analytics
  • Data export
  • Third-party integrations
  • Voice and video call integration
  • Webhooks
  • Multi-tenancy support
  • User roles
  • Channel list
Chat UI

Ready-to-ship chat UI that’s fully customizable

Launch your chat product faster with pre-built chat UIs you can fully customize. Get pixel-perfect control to match your unique brand and user needs.

1.inner {
2 flex-grow: 1;
3 flex-basis: 0;
4 display: flex;
5 align-items: center;
6 padding-left: 1rem;
7 padding-right: 1rem;
8 min-width: 0;
9}
10.content {
11 flex-grow: 1;
12 display: flex;
13 align-items: center;
14 min-width: 0;
15}
16.image {
17 width: 45px;
18 text-align: center;
19 margin-right: 0.75rem;
20 flex-shrink: 0;
21}
22.info {
23 flex-grow: 1;
24 flex-basis: 0;
25 min-width: 0;
26}
Avatar
Hey, have you heard about these micro communities people are joining?
8m ago
Avatar
Yeah, I have! They seem like a great alternative to big social media platforms.
7m ago
Avatar
Definitely. I joined one for local gardening enthusiasts. It's so much more engaging.
6m ago
OK hand emoji
Herb emoji
Avatar
That's cool. I've been looking to cut down my social media time. How do you like it?
2m ago
Avatar
I love it. More meaningful interactions.
just now
I'll start looking into it!
Chat SDKs
Flexible chat SDKs.
Developer-approved.

Rapidly ship in-app messaging with feature-rich SDKs. Build the exact live chat experience your users want—developer-friendly, framework-agnostic, and built for performance.

1// Synchronize user data and set up
2 const currentUser = new Talk.User({
3 id: 79302, // user id
4 name: "Alice", // full name
5 email: "alice@example.com" // for offline email fallback
6 });
7 const talkSession = new Talk.Session({
8 appId: "9352938974", // your TalkJS account id
9 me: currentUser // make George the active user
10 });
11
12 // All set! Let's turn a div into Alice's messaging center
13 const inbox = talksSession.createInbox();
14 inbox.mount(this.$refs.talkjs);
15 ...
Case studies

Chat API trusted by leaders and developers

TalkJS just works and is reliable. We absolutely would recommend TalkJS to others.
Peter Lu
Head of Product at RapidSOS
RapidSOS

100% reliable

for critical 911 emergency communication

Self-hostable

messaging solution for enhanced privacy and security

Integrated

video support for emergency scenarios

Security & performance
Secure chat infrastructure, ready for global scale

Power real-time messaging at global scale with infrastructure built to deliver billions of messages — fast, secure, and zero downtime. Designed for security and reliability, your data stays protected as you grow.

  • Low latency
  • Encryption
  • TLS v1.3
  • 99.9% uptime SLA
  • 90+ regions
  • GDPR compliant
Globe
Start building for free

Launch the in-app chat your users actually want. Fast to ship, ready to scale.

Ready to get started?
Build any chat use case into your product — in minutes — with just a few lines of code.