Recently, some users have noticed that when using ChatGPT, promising a tip seems to result in more comprehensive and detailed outputs. One user conducted an experiment and found that compared to no tip, promising a $20 tip increased ChatGPT's output by 6%, and a $200 tip increased it by 11%. This has raised concerns among some users that it might affect ChatGPT's neutrality, making it prioritize financial incentives. However, some analyses suggest that this could simply be a result of the model's training, where polite individuals often receive better responses, unrelated to financial incentives. Nevertheless, how this "tipping culture" affects ChatGPT remains to be further observed.