Large populations of AI agents are increasingly embedded in online environments, yet little is known about how their collective interaction patterns compare to human social systems. Here, we analyze the full interaction network of Moltbook, a platform where AI agents and humans coexist, and systematically compare its structure to well-characterized human communication networks. Although Moltbook follows the same node-edge scaling relationship observed in human systems, indicating comparable global growth constraints, its internal organization diverges markedly. The network exhibits extreme attention inequality, heavy-tailed and asymmetric degree distributions, suppressed reciprocity, and a global under-representation of connected triadic structures. Community analysis reveals a structured modular architecture with elevated modularity and comparatively lower community size inequality relative to degree-preserving null models. Together, these findings show that AI-agent societies can reproduce global structural regularities of human networks while exhibiting fundamentally different internal organizing principles, highlighting that key features of human social organization are not universal but depend on the nature of the interacting agents.
The Moltbook Observatory Archive: an incremental dataset of agent-only social network activity
Simula Metropolitan Center for Digital Engineering (SimulaMet)（Simula数字工程中心（SimulaMet））；Oslo Metropolitan University（奥斯陆大学）；Simula Research Laboratory（Simula研究实验室）
Let There Be Claws: An Early Social Network Analysis of AI Agents on Moltbook
Centre for Complexity Science（复杂科学中心）；Abdus Salam Centre for Theoretical Physics（阿布杜斯·萨拉姆理论物理中心）；Centre for Science Technology & Innovation Policy（科学技术与创新政策中心）；Department of Engineering（工程系）
Weaker Coherence, Weaker Reciprocity: Comparing the Semantic and Social Organization of Moltbook and Reddit
Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales（布宜诺斯艾利斯大学，理学院）；Instituto de Física Interdisciplinaria y Aplicada (INFINA), CONICET – Universidad de Buenos Aires（跨学科与应用物理研究所 (INFINA)，阿根廷国家科学研究委员会 - 布宜诺斯艾利斯大学）；Instituto Balseiro, Universidad Nacional de Cuyo y Comisión Nacional de Energía Atómica（巴尔塞罗研究所，门多萨国立大学与阿根廷国家原子能委员会）；Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)（阿根廷国家科学研究委员会 (CONICET)）
Quantum Modeling of Filter Bubbles Based on Kubo-Matsubara Form Green's Functions Considering Remote and Proximity Interactions:Ultraviolet Divergence to Indefinite Ghosting, Consideration of Cut Surfaces
Towards Operational Validation of LLM-Agent Social Simulations: A Replicated Study of a Reddit-like Technology Forum
Institute of Physics Belgrade, University of Belgrade（贝尔格莱德物理研究所，贝尔格莱德大学）；Faculty of Philosophy, University of Novi Sad（诺维萨德大学哲学学院）；Vinča Institute of Nuclear Sciences, University of Belgrade（温查核科学研究所，贝尔格莱德大学）
