Carnegie Mellon University: CMU Study Shows Large Language Models Have Distinctive Styles. “In a recent study, Carnegie Mellon University researchers found they could use characteristic word choices to determine which large language model (LLM) generated a particular bit of text with 97% accuracy.”

https://rbfirehose.com/2025/04/17/carnegie-mellon-university-cmu-study-shows-large-language-models-have-distinctive-styles/