Co-Creative Robotics Turn-Based Human–Robot Assembly for Architectural Design Exploration Sachs, Hans Aykin, Yusuf Sardenberg, Victor Schneider, Bo eCAADe, eCaade Co Creative Robots Collaborative Robots Design Architecture ddc:600 This paper investigates co-creativity in architectural robotics through a design-research experiment that repositions the robot from a fabrication tool to an active collaborator in spatial exploration. A turn-based assembly process enables a human designer and a robotic arm to alternately place modular bricks within a shared three-dimensional environment. Each move is evaluated through computational rules—support, stability, and collision—and interpreted in real time via an AI image-to-image diffusion model. This sequential exchange establishes a reciprocal design dialogue: the human reads the robot’s action as a spatial proposition, while the robot responds to the evolving structure. Creative agency becomes distributed across human and machine, encouraging reflection on intent and positioning robotic intelligence as a source of suggestion rather than execution. By prioritizing responsiveness and interpretation over efficiency, the research challenges conventional file-to-factory paradigms and frames robotics as an active participant in design thinking. It contributes to discussions on human–machine collaboration by proposing co-creative robotics as a framework for rethinking authorship in architecture. Keywords. Human–robot Collaboration, Co-Creation, Computational Creativity, Robotic Fabrication, Artificial Intelligence, Digital Fabrication, Generative Models, Discrete Assembly, Human–Machine Interaction. CumInCAD 2026 info:eu-repo/semantics/other doc-type:other text http://purl.org/coar/resource_type/c_1843 https://www.th-owl.de/elsa/record/14042 https://www.th-owl.de/elsa/download/14042/14043 Sachs H, Aykin Y, Sardenberg V, Schneider B. <i>Co-Creative Robotics Turn-Based Human–Robot Assembly for Architectural Design Exploration</i>. Vol 44. 1st ed. (eCAADe eCaade, ed.). CumInCAD; 2026:357-366. eng info:eu-repo/semantics/openAccess