OpenAI’s API Only Partly Matched ChatGPT’s Citations, Paper Finds via @sejournal, @MattGSouthern

Google search results and OpenAI’s Responses API together found 26.2% of the pages ChatGPT cited in a preprint’s tests of the GPT-5.5 Instant setting. They found 48.7% of the sites behind those citations. Figures in this paper were posted on Oct. 11 by researchers at the National University of Singapore and Xi’an Jiaotong University. It included four versions of ChatGPT, from GPT-5.2 Instant to GPT-5.5 Instant, along with the majority of data collection from March 29 through July 29, 2026. The two stand-ins were able to be queried without having to open ChatGPT; the researchers compared both stand-ins’ results for similarity to the pages cited by ChatGPT’s web app.