Reddit's Share of ChatGPT Citations Plummets 86% in Just Four Days
TLDR
Reddit's citation share in ChatGPT collapsed from 3.8% to 0.5% between mid-August and August 17, likely tied to a query-handling change OpenAI made on August 8, though the cause remains unconfirmed.
Optimixed Overview
Optimixed's original report on this story.
According to Promptwatch data cited by SEMRUSH Blog, Reddit's share of ChatGPT citations fell 86% from a steady 3.8% through early August to just 0.5% in mid-August. The tracking platform attributes the decline to a query-handling change OpenAI made on August 8, though OpenAI confirmed to Yahoo Tech it does not restrict visibility for individual sites and still cites Reddit. Notably, Reddit's citations also fell in Google's AI Overviews and AI Mode during the same period—11% and 31% respectively—suggesting the decline may be concentrated in ChatGPT rather than a platform-wide phenomenon. Semrush notes that while this mirrors a similar Reddit citation collapse a year ago, Reddit's research and sentiment-analysis value for marketers remains unchanged, only its visibility within AI-generated answers has shifted.
This Isn't the First Time Reddit's ChatGPT Visibility Collapsed
The tracking firm behind this finding, Promptwatch, says Reddit held a steady share of ChatGPT citations for weeks before the drop, then lost most of that visibility within days — and it's being upfront that the cause isn't confirmed. The company points to a change in how ChatGPT fans out search queries as a possible trigger, but says it can't fully rule out an issue in its own data collection, and OpenAI has stated it doesn't set fixed visibility levels for individual sites and that ChatGPT still cites Reddit.
This has happened before. A separate analysis of more than 230,000 prompts found a similar Reddit citation collapse roughly a year earlier, when Reddit's share of ChatGPT responses fell from around 60% to roughly 10% over about a month. Analyst Kevin Indig traced that earlier drop not to any OpenAI change, but to Google removing a search parameter that previously let tools pull 100 results per page — a reminder that a citation collapse on one platform doesn't necessarily originate with that platform at all.
One detail suggests this drop is specific to ChatGPT rather than part of a broader shift: Reddit's citation share fell far less over the same period in Google's AI Overviews and AI Mode, making this look concentrated on one platform rather than a change in how AI systems generally value Reddit content. It's also possible Reddit hasn't disappeared from the pipeline so much as moved earlier in it — used to help a model identify relevant brands or topics before it runs more specific searches — rather than vanishing from the citation process entirely.