Asking literal questions is not allowed during the exams in general – for instance, posting questions from the exam on the forum is not allowed.

• With rapid, it's an open book exam, so you're welcome to use any documentation for instance.
• Intermediate is a closed book exam and you are not allowed to use any resources.
• Advanced allows the use of the following resources:
  • Mendix Docs
  • Mendix Academy Learning Paths
  • Mendix Studio (including any project you may have)
  • Mendix Studio Pro (including any project you may have)
  • Browser-based language translation service (i.e. Google Translate)
• Expert is not an exam and such so for expert it's not relevant

So overall, this means that the use of ChatGPT for any of the certifications is not allowed.