The video platform YouTube has announced that it is testing a new AI-driven chatbot called YouChat, designed to help users gain a deeper understanding of the video content they are watching. YouChat is capable of answering user queries and recommending related videos without interrupting the currently playing video. Initially, YouChat is available to a small number of YouTube Premium members in the United States. YouTube states that this new feature will utilize information from the YouTube platform and large language models to generate responses. Additionally, YouTube is testing another AI feature that can summarize the main discussion topics in video comment sections. This marks a further expansion of AI applications by YouTube to enhance user viewing experiences.