@Mark_A it's automated content they, and anyone can detect. Its doesn't matter if it's AI-generated, it's the value of the content that counts.
Let me give you an example of a small test I've tried: I created a web page with pure AI generated content, and I created a page with hand-created content. In addition, I created a page which used AI-generated content but I re-wrote it so that the online detectors couldn't indicate it was greater well less than 50% AI.
All three pages ranked in Google very quickly (primarily because it was new). However, within three weeks, the AI-generated content tanked, and the other pages settled somewhere on page 1.
This only proves to me that there is a detector (Google's
SpamBrain [webmasterworld.com]) and it downgraded the page. It was probably a rubbish page, imho, so deserved to be ditched.
Note AI generated content is not against Google's policies.
I threw AdSense on the pages, and it made no difference to the ranking.
I doubt it's just OpenAI's ChatGPT content that could be penalised. Let's face it, there are now so many generative tools around, some of which have been around for quite a while prior to ChatGPT's profile appearing on the radar. In fact, for many years there's been automatically-generated content.
I suspect for Google it's all about EEAT and SpamBrain.
Google does indicate about automated content [
developers.google.com...]
And this page is updated about using automated content
Using automation—including AI—to generate content with the primary purpose of manipulating ranking in search results is a violation of our spam policies.
[
developers.google.com...]
HTH