Has the classroom finally flipped? This interactive workshop explores how generative AI is breathing new life into the once-radical idea of the flipped classroom, particularly in the ESL context. While flipped learning has long promised more active, student-centred classroom time, many teachers have struggled with its practical implementation—until now. With AI tools like ChatGPT, learners can access personalized practice, explanations, and content creation outside class, enabling richer communicative tasks and deeper learning in class. We’ll examine practical use cases, discuss challenges and ethical considerations, and experiment hands-on with tools that can support this shift. Whether you're a tech enthusiast or a curious sceptic, this session will give you concrete ideas for flipping your own classroom—finally, and effectively.