A method is disclosed for providing, for display to a content provider, a user interface (UI) indicating one or more characteristics of existing audiences including a plurality of users currently designated to receive content of the content provider, the UI comprising a new audiences UI element selectable to view new audiences to be added to the existing audiences, receiving a user selection of the new audiences UI element, and in response to the user selection of the new audiences UI element, predicting, using a machine learning model, an increase in a number of user actions related to the content of the content provider in response to an addition of the new audiences to the existing audiences, and causing display of information identifying the new audiences, and an indication of the predicted increased number of user actions related to the content of the content provider in response to the addition of the new audiences to the existing audiences.