Presenting Large Language Models as Companions Affects What Mental Capacities People Attribute to Them

How does messaging about about large language models (LLMs) in public discourse influence the way people think about and interact with these models? To answer this question, we randomly assigned participants (N = 470) to watch a short informational video presenting LLMs as either machines, tools, or companions -- or to watch no video. We then assessed how strongly they believed LLMs to possess various mental capacities, such as the ability have intentions or remember things. We found that participants who watched the companion video reported believing that LLMs more fully possessed these capacities than did participants in other groups. In a follow-up study (N = 604), we replicated these findings and found nuanced effects on how these videos impact people's reliance on LLM-generated responses when seeking out factual information. Together, these studies highlight the impact of messaging about AI -- beyond technical advances in AI -- to generate broad societal impact.