If that were the case, I would expect to see an explicit reference to the CGPT version in the introduction, and an explanation as to why the authors chose it fo

If that were the case, I would expect to see an explicit reference to the CGPT version in the introduction, and an explanation as to why the authors chose it for the study. Instead, the only version information appears to be buried in section 3.1.2 ("ChatGPT 3.5 Turbo API is used").