In this video, Pascal Regeer introduces viewers to the groundbreaking capability of using ChatGPT to create BPMN diagrams. He shares his journey of trying to generate these diagrams over the past year and how the new o1 model from OpenAI has finally made it possible. The tutorial provides a step-by-step guide on how to utilize ChatGPT to define processes, create XML templates, and validate BPMN files. Regeer explains the importance of accurately mapping out processes, including tasks, message flows, and gateways, to achieve successful diagram generation. He also demonstrates how to use a custom tool for creating and validating BPMN files, emphasizing the value of mastering this skill for business applications. By the end of the video, viewers are equipped with the knowledge and tools to create their own BPMN diagrams using AI, opening new possibilities for process management and automation.