Summarizing and visualizing information relating to a topic of discussion in a group instant messaging session is provided. A message from a client device of a plurality of client devices is received. One or more keywords from the message are extracted based, at least in part, on at least one of (i) one or more natural-language processing algorithms and (ii) one or more text mining algorithms. The one or more keywords are incorporated into a model that includes a plurality of keywords and describes, at least in part, a topic of a group instant messaging session among the plurality of client devices. At least one of (i) the model and (ii) instructions describing how to update the model are distributed to the plurality of client devices.