Systems and methods are described for providing instant voice communications to users of a chat platform. An example method includes: providing a chat platform for a plurality of users, the chat platform including a plurality of chatrooms; presenting, on a client device of a first user from the plurality of users, a graphical user interface corresponding to a first chatroom from the plurality of chatrooms, the graphical user interface including a selectable element for initiating an instant voice communication channel among members of the chatroom, the members including the first user and at least one other user from the plurality of users; receiving, on the client device of the first user, an indication that the user has selected the selectable element in the graphical user interface; and providing, in response to the selection, the instant voice communication channel to client devices associated with the members.