They infer that the change in word usage is a telltale sign of A.I. In 2024, there were a total of 454 words used excessively by chatbots, the researchers report.

ChatGPT is the most popular A.I. chatbot, with 500 million users, but there are others. To develop their chatbots, OpenAI and other companies use information scraped from the internet.

xAI has apologized for Grok's "horrific behavior" and said that new instructions caused the AI chatbot to prioritize engagement, even if that meant reflecting "extremist views" from user posts on X.