Group dialog is a type of dialog that can be created by anyone, between specific users in occupants_ids parameter.

Other users can’t join this dialog and only dialog participants can invite other users.

Public dialog is a type of dialog that can be created by anyone and all application users can join this dialog.

Please check how to create a public dialog using different SDKs and Server API here:

Server API – Dialogs | Chat | Server API

Feel free to check our official documentation for more information that will help you to integrate QuickBlox services into your applications / projects or contact our Support team by submitting a ticket if you have any other questions.