The CSCW community has been active in designing, implementing, and evaluating novel social computing systems. In recent years, there has been a rise in using AI to empower social interactions and the capabilities of these systems. While these implementations charge ahead of the establishment of ethical and legal frameworks, it is timely to reflect on the state of AI-powered social computing systems and to identify new research agendas for the community. This Special Interest Group aims to bring in researchers and practitioners from different fields to foster discussions on the key considerations and challenges in designing for AI-powered social computing systems and to promote opportunities for new research collaborations.