'We are experimenting with the integration of KakaoTalk and AI so that all people can experience AI in their daily lives,” Kakao CEO Hong Eun-taek told investors during a 2023 fourth-quarter conference call. “Last December, we launched features such as summarizing unread messages and changing the tone of messages in chat rooms based on a lightweight language model developed by Kakao Brain, and 1.5 million people experienced it in just a month.”