Researchers outline blueprint for economic world models

A new arXiv paper proposes an implementation roadmap for Economic World Models, defined as generative economic models that simulate economies through heterogeneous agents, their beliefs and actions, and the market and institutional mechanisms that shape aggregate outcomes. The authors organize these systems into a six-level capability ladder, ranging from fixed rule-based agent worlds to adaptive and LLM-based agents, self-evolving agents, evolving institutional worlds, and sim-to-real economic twins aligned with observations. Their literature survey finds current work remains concentrated in lower-level agent and simulation environments, while systems with self-evolving agents, endogenous institutions, persistent empirical alignment, and validated economic mechanisms remain rare.