Free and open first
Best Chat Api in 2026
Chat API tools help developers add messaging to applications through APIs and SDKs. This list is for people comparing hosted services, SDKs, and self-hosted options on a budget.
- 26 apps
- Research read 7 Oct 2026
- How the order is worked out
- 1
Ably Chat
Free plan AndroidAPIiPhone+1 - 2
CometChat
Free plan AndroidAPIiPhone+1 - 3
Dendri
Free plan APISelf-hostedWeb - 4
mesibo
Free plan AndroidAPIiPhone+5 - 5
OpenIM
Free plan AndroidAPIiPhone+5 - 6
- 7
PrivChat
Free plan AndroidAPIiPhone+5 - 8
PubNub Chat
Free plan AndroidAPIiPhone+4 - 9
QuickBlox Chat API
Free plan AndroidAPIiPhone+2QuickBlox combines messaging, media sharing, moderation, and multiple hosting options for app developers.
- 10
Stream Chat
Free plan AndroidAPIiPhone+1 - 11
Tinode
Free plan AndroidAPIiPhone+2 - 12
TalkJS
Free plan AndroidiPhoneWeb - 13
Twilio Conversations
Free plan AndroidAPIiPhone+1 - 14
ZEGOCLOUD In-app Chat
Free plan AndroidAPIiPhone+3 - 15
Agora Chat
Free plan AndroidiPhoneWeb+1 - 16
Chat21
Free plan AndroidiPhoneWeb - 17
NetEase Cloud IM
Free plan AndroidiPhoneMac+2 - 18
- 19
JuggleIM
Free trial AndroidAPIiPhone+2 - 20
Sendbird Chat
Free trial AndroidAPIiPhone+1 - 21
MirrorFly
Paid AndroidAPIiPhone+2 - 22
LeanCloud Realtime
Paid AndroidiPhoneWeb - 23
ChatAPI
Paid Web - 24
Lowkey Chat SDK
Paid AndroidiPhoneWeb - 25
QuickBlox AI Agent Builder
Paid Web
#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price
Compare free plans, trial terms, paid starting prices, supported platforms, and group size limits. Check encryption, moderation tools, SDK platforms, and whether the licence permits the code use you need.
Questions
Do chat API tools have free plans?
Yes. A free plan is listed for Ably Chat, Agora Chat, Chat21, CometChat, Dendri, and mesibo. Other entries use different pricing models.
Which chat API options are open source?
ChatAPI and JuggleIM are listed as open source. Read their licences to confirm how you may use or modify the code.
Is there a free trial?
JuggleIM lists a free trial, and mesibo lists a 30-day trial. Check the current terms before signing up.
What platforms can these tools run on?
Platforms listed for this category include web, iOS, Android, API, self-hosted, and Windows. Confirm the specific platforms for a tool you are considering.
What prices are listed?
Examples include Agora Chat from $0.05 per user per month, Ably Chat and Dendri from $29 per month, mesibo from $49 per month, and Lowkey Chat SDK from $249 per month.