Found the paper: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=5136877

I am not qualified to make a judgement on the research quality, but it strikes me as a little weird? And also weird to cite when trying to create an "AI is stalling" narrative, because the text of the paper doesn't really support that at all.

The claim seems to be based on a single figure that the authors present as additional context in an appendix, which shows the trends of four surveys, in which only one of the four shows a decline. The authors don't even seem to think the decline is significant enough to comment on except to say that "the plateau in late 2025 reflects declining interest and correlates with google search trends for ChatGPT and Gemini" (which they also show using a chart that does not look like a plateau or decline to me at all).

The methodology and survey questions are included, the numbers seem to be based on a straightforward "Do you use generative AI for your job"?

It's weirdly ChatGPT and Gemini centric, the word "Claude" only appears once, in a definition, and "Microsoft" and "Copilot" are nowhere to be seen. I don't know how much to read into that, it just strikes me as weird and noteworthy in a paper that by its own admission is detecting a trend that is the opposite of everyone else doing large scale surveys on the topic.

If you are not looking at Claude usage then a plateau amongst Claude competitors in late 2025 makes perfect sense.