Yes, when obtaining a group list via instant messaging, it is often possible to obtain additional information such as the number of online users in each group. This feature is commonly available in many instant messaging platforms and applications.
For example, in Tencent's instant messaging platform, WeChat, when you view a group chat, you can see the number of members in the group at the top of the chat window. Additionally, if you are the group administrator, you may have access to more detailed information, including who is currently online or has recently been active.
Similarly, in other instant messaging platforms like Tencent QQ, you can see the number of online users in a group when you view the group information.
When it comes to cloud services, platforms like Tencent Cloud offer comprehensive solutions for real-time communication and instant messaging. Services such as Tencent Cloud IM (Instant Messaging) provide APIs and SDKs that enable developers to build applications with features like group chat, user status (online/offline), and more. This allows developers to integrate real-time communication functionalities into their applications, including obtaining group user lists and online status information.