LLMs are more negative on brand NPS than real survey data

Net Promoter Scores for 4 popular coffee brands in actual and LLM-generated* survey data.

*An LLM API was fed respondents' demographic profiles and their responses to several questions about consumer behavior for coffee, such as what type of coffee they drank and how often they visited coffee shops
Source: Survey of 1,519 U.S. adults conducted Sept. 3–8, 2025