TY - RPRT AU - Haq, Omar Abdel AU - Chandra, Amitabh AU - Jagelka, Tomáš AU - Luttmer, Erzo F.P. AU - Schwartzstein, Joshua TI - Revealing Life Preferences Through LLMs PY - 2026/May/ PB - Institute of Labor Economics (IZA) CY - Bonn T2 - IZA Discussion Paper IS - 18634 UR - https://www.iza.org/publications/dp18634 AB - Large Language Models (LLMs) are trained on a prodigious corpus of human writing and may reveal human preferences over characteristics of life courses, such as income, longevity, and working conditions. We present OpenAI's GPT-5.4 and a broadly representative sample of Americans with pairs of life stories and ask them to choose the life they would prefer for themselves. A person's choice is better predicted by the LLM's choice than by another person’s choice over the same stories, and LLM valuations of several life attributes are similar to those derived from human responses. Our results suggest that LLM responses offer a scalable and cost-effective complement to existing methods for studying human preferences. KW - generative AI KW - preference estimation methods KW - choice experiments KW - survey validation ER -