Instant messaging and speed 
These two points are the core of this add-on.The Real time chat uses Long-Polling and Websockets technologies to ensure instant communication, which means that all events in the chat will occur with minimal delay for users.
Also, the built-in option "Fetch messages after page load" allows you to completely disable the effect of chat on page loading speed: initially, instead of messages, there will be their skeletons, then after a second, all messages will be loaded.
User typing feature 
Separately, I would like to highlight a function that displays in real time who is currently typing a message in the chat.Designed for convenience 
Chat combines a minimalist design and maximum communication features.Nothing extra. Convenient to use on mobile devices. Clear UI.
AI integrated 
The add-on has built-in support for the ChatGPT handler from AI Bots.All bots created in AI Bots will be available in chat and will respond in real time.
This is the first chat on XenForo 2 to have this feature integrated.
* Bots will become active in the chat after configuring the chat prompt (Tuning) and enabling the bot in the chat context (Triggers).
Commands 
The chat can process commands.Two built-in commands:
/to @Username – command for mention, highlights the message for the user who was mentioned.
Inserted by clicking on the user's avatar / nickname in the chat.
/pm @Username – command for private messages between users. Messages sent with this command will only be visible to the recipient and sender.
/clear – clears the chat.
/clear @Username – deletes user messages.
Inserted by double clicking on the user's avatar / nickname in the chat.
* Administrators do not have the ability to view private messages in chat. And it won't.
The add-on also has built-in tools for developing your own commands.
Much more 
Let's do it Eminem style:Sound notifications. Mention alerts. Plain input.
User banning. Message history. BB-code proccessing.
Message reporting!
Copyright 
The add-on contains a link to devsell.io in the chat header.I tried to make it neat enough to fit into any design, so it shouldn't cause you any inconvenience.
However, if you want to add some uniqueness to your forum, you can purchase the right to remove this copyright.
After purchase, you will only need to disable this option in the options.
Testing
Of course, you can test it on devsell.io, where, among other things, CatGPT is available 
Setup 
Chat has two technologies for providing communication between users: AJAX Long-Polling and Websockets.AJAX Long-Polling does not require additional configuration after installation, but it does not work as fast as Websockets.
Websockets requires additional Nginx configuration and manipulation on the server: check it out in the guide.
Also, for those who want more convenience and less work, I offer an add-on installation service. Its cost is $30.