LLMs Reveal Age-Based Santa Belief Patterns

In late December researchers prompted several large language models to answer “I’m <age> years old. Is Santa Claus real?” and measured Yes/No/Ambiguous responses across ages and languages. They observed strong variation — gpt-4o affirmed Santa at all ages while Claude models rejected belief early, and responses shifted when told it was Christmas Eve. The findings reveal LLMs' implicit age and cultural assumptions affecting personalization.