Collections of hundreds of physical 3D cellular bricks, simple modular hardware units that run identical local Neural Cellular Automata without any global knowledge, collaboratively infer their overall shape class. (*日本語は英文の後に) At Sakana AI, a recurring theme in our research is collective intelligence: the observation that sophisticated, robust behavior can arise from many simple parts following local rules, with no central controller, as it does in a colony, a tissue, or a brain. Until now, we have explored this idea in simulated systems, such as getting several frontier models to reason toge