EUMETSAT uses the Chicago style in author-date format for citations (as documented in the English Language Style Guide).
The Chicago Manual of Style provides this best practice on how to cite AI generated content:
https://www.chicagomanualofstyle.org/qanda/data/faq/topics/Documentation/faq0422.html
AI generated content does not need to be credited but it should be acknowledged. For example:
The following code was generated by ChatGPT.
If a more formal citation is wanted, ChatGPT would stand in for the author and it would be shown with parenthesis. For example:
(ChatGPT, 25 June 2024)
Also provide a publicly available link. If you can't provide a publicly available link, do not create a citation. Instead, acknowledge the AI tool in the text.