LLMs Enhance Agent-Based Models for Dynamic Policy Making

Sifat Afroj Moon, Dakotah Maguire, Adam Spannaus, Joe Tuccillo, Maksudul Alam, Sudip K. Seal, John Gounley, Heidi Hanson· July 9, 2026 View original

Summary

Researchers developed HALE, a Hybrid Agent-based and Language-driven Epidemic modeling framework, that integrates large language models to predict human decision-making within agent-based simulations. This approach allows ABMs to adapt to real-time changes, moving beyond traditional static priors, and was demonstrated through a COVID-19 simulation.

A new research paper presents a novel framework called HALE, which stands for Hybrid Agent-based and Language-driven Epidemic modeling. This framework addresses a long-standing limitation in traditional Agent-Based Models (ABMs), which typically rely on static assumptions about individual behavior. By integrating large language models (LLMs) into ABMs, HALE enables these simulations to dynamically predict and adapt to human decision-making in real-time. The core innovation lies in leveraging LLMs' advanced reasoning capabilities to inform the actions of individual agents within the simulation. This allows the model to evolve with changing circumstances, offering a more realistic and responsive tool for policy making. As a proof-of-concept, the HALE framework was applied to simulate the spread and effects of COVID-19 in Salt Lake County, Utah, showcasing its potential for more adaptive and accurate predictive modeling.

Why it matters

Integrating LLMs into agent-based modeling provides a powerful new tool for simulating complex human systems, offering more dynamic and realistic insights for policy makers and strategic planners.

How to implement this in your domain

  1. 1Explore integrating LLMs into existing agent-based simulation platforms.
  2. 2Develop methodologies for mapping LLM outputs to agent behaviors and decision rules.
  3. 3Design experiments to validate LLM-driven agent behaviors against real-world data.
  4. 4Apply hybrid ABM-LLM frameworks to simulate complex social, economic, or health scenarios.

Who benefits

Public HealthGovernmentUrban PlanningSocial SciencesMarket Research

Key takeaways

  • LLMs can significantly enhance the realism and adaptability of agent-based models.
  • Hybrid ABM-LLM frameworks allow for dynamic prediction of human decision-making.
  • This approach overcomes the limitations of static priors in traditional ABMs.
  • Such models offer improved tools for policy making and understanding complex systems.

Original post by Sifat Afroj Moon, Dakotah Maguire, Adam Spannaus, Joe Tuccillo, Maksudul Alam, Sudip K. Seal, John Gounley, Heidi Hanson

"arXiv:2607.06757v1 Announce Type: new Abstract: Agent-based modeling (ABM) has the capability to model millions of individuals and their interactions, which is useful for policy making. However, ABMs have traditionally relied on static prior, which prevents the models from adapti…"

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Originally posted by Sifat Afroj Moon, Dakotah Maguire, Adam Spannaus, Joe Tuccillo, Maksudul Alam, Sudip K. Seal, John Gounley, Heidi Hanson on X · view source

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