AI City Urban Design in Grasshopper & ComfyUI is a course that teaches architects to design an entire city concept using AI, Grasshopper, and ComfyUI, from initial site analysis to final presentation visuals. Across a four-day program, students build parametric city geometry and adaptive urban systems in Grasshopper using Pufferfish, Parakeet, Dendro, and LunchBox, develop responsive building and façade systems, apply environmental analysis with Ladybug, and produce AI-generated renders, diagrams, and video narratives using ComfyUI, Adobe Photoshop, Google Flow, and Adobe Premiere. The course is Beginner level and requires an understanding of 3D modeling in any software; prior knowledge of Rhino, Grasshopper, Photoshop, ComfyUI, or Google Flow is welcomed but not required.