Research · Reddit in AI search · October 2026
How important is Reddit for AI search?
To find out, we analysed 197,314 AI answers to more than 1,600 real buying and research questions, tracked daily across five leading AI engines (ChatGPT, Google AI Overviews, Gemini, Perplexity and Copilot) over eight weeks in the UK and US. Then we studied the 1,700 Reddit threads those answers cited: how old they were, how big, and how often AI came back to them. Google AI Overviews cited Reddit in about one answer in five. The other four engines almost never did.
of Google AI Overview answers cited at least one Reddit thread. For ChatGPT it was 0.2%.
of Reddit citations went to just one in ten of the threads AI cited.
of Reddit citations in the second month went to threads AI was already citing in the first.
of cited threads were more than a year old. Only 9% were less than three months old.
01 · By engine
Which AI engines cite Reddit? Mostly Google AI Overviews
Google AI Overviews cited Reddit in almost one answer in five. ChatGPT, Gemini, Perplexity and Copilot each cited it in about one answer in a hundred, or fewer. If you only check ChatGPT, you will miss nearly all of Reddit’s influence on AI answers.
Share of answers citing at least one Reddit thread
Each category weighted equally. Google AI Overviews and ChatGPT tracked in ten categories, Gemini in five. * Tracked in two categories only, so treat as a guide.
of the forum citations in Google AI Overviews went to Reddit. Quora, Mumsnet, MoneySavingExpert’s forums, Stack Exchange and every other forum we found shared the remaining 6%.
02 · By category
How much Reddit influences AI search depends on your category
The 19% is an average across very different markets. In some categories, Reddit is in most answers: questions about learning a new skill pulled in Reddit in more than half of AI Overviews. Questions about venues and events never did. Check your own category before you decide how much Reddit matters to you.
Share of Google AI Overview answers citing Reddit
Each category is one set of questions tracked in reconnAI. Personal finance is UK only.
03 · A short list of threads
Which Reddit threads does AI cite? A few do most of the work
AI doesn’t spread its Reddit citations evenly. On average, the top 10% of cited threads in a category took more than half of all its Reddit citations. And AI keeps going back to the same ones.
In one category, a single Reddit thread was cited in 748 AI answers to 39 different questions. It was cited on every one of the 56 days we tracked.
Where the Reddit citations went
What this means for you
The threads that shape your category are a short list you can find
Brand shortlists in AI answers change from day to day. The Reddit threads behind them mostly don’t. Because AI keeps citing the same threads, the handful that matter for your buyers’ questions is small and steady enough to track. Find them, read them, and know what they say about you and your competitors.
04 · Age and size
Old threads, ordinary conversations
You might expect AI to favour fresh, popular posts. It doesn’t. More than two thirds of the threads AI cited were over a year old, and almost half were over two years old. Most are everyday conversations, not viral posts: one in five had fewer than 10 comments.
How old cited threads were when AI cited them
cited threads had fewer than 10 comments. A useful answer in a quiet thread can be quoted for years.
of Reddit citations went to threads more than a year old. What was said about your brand years ago can still be in today’s answers.
Age is the time between a thread being posted and the first answer in our study that cited it. Based on the six categories with more than 100 cited threads, each weighted equally. Rounded to whole numbers.
05 · What it means
A Reddit strategy for AI search
Reddit is part of your AI visibility, whether or not your brand is active there. Four things to take from the data.
Start with Google
Reddit’s influence on AI answers runs almost entirely through Google AI Overviews. Look at what they say for your category first.
Find your threads
A small set of threads gets cited again and again. Find the ones AI uses for your buyers’ questions, and read what they say about you and your competitors.
Old posts still count
A thread from three years ago can be quoted every day. Out-of-date or unfair claims won’t fade on their own, so know where they are.
Take part honestly
Reddit communities dislike disguised marketing. Where you can genuinely help, answer openly and say who you work for.
How reconnAI measures this
See the threads behind the answers
This study is built on the same daily data reconnAI collects for every customer, including every source each AI answer cites.
Reddit’s role depends on the engine
Every engine, every day. Your buyers’ questions run daily on the AI engines that matter to you, with every source each answer cites, so you can see where Reddit shows up and where it doesn’t.
A few threads do most of the work
The threads, ranked. See which Reddit threads AI cites for your questions, and how often each one comes up.
Old threads keep getting cited
What each thread says. See when a thread was posted, how many comments it has, and whether it mentions your brand.
Every category is different
Your category, not an average. See how much Reddit matters for your questions, alongside every other website AI cites.
Questions
Common questions
Does Reddit influence AI search results?
Yes, but mostly through Google. In our study, Google AI Overviews cited a Reddit thread in 19% of answers. ChatGPT, Gemini, Perplexity and Copilot each cited Reddit in about 1% of answers or fewer. It also depends on your category: Reddit appeared in more than half of AI Overviews in one category and in none in another.
Does ChatGPT use Reddit in its answers?
It rarely cites it. In our data ChatGPT cited Reddit in 0.2% of answers, compared with 19% for Google AI Overviews. This measures citations, meaning the sources linked with an answer. It doesn’t tell us what an AI model learned from when it was built.
Why does Reddit show up so often in Google AI Overviews?
AI Overviews draw on Google Search, where Reddit threads often rank well for questions people ask in their own words. Our data shows the result: Reddit appeared in about one AI Overview in five, far more often than on any other engine we track.
Does Perplexity cite Reddit?
Rarely, in our data: 0.4% of Perplexity answers cited Reddit. We track Perplexity in two categories, so treat this as a guide rather than a rule for every market.
Does AI only cite popular, recent Reddit posts?
No. More than two thirds of the threads AI cited were over a year old, and one in five had fewer than 10 comments. Only 9% were less than three months old.
How should brands use Reddit for AI search?
Start by finding the threads AI already cites for your buyers’ questions and reading what they say about you and your competitors. Where you can genuinely help, answer openly and say who you are. Disguised promotion tends to backfire on Reddit. We measured which threads get cited, not whether posting in them changes AI answers, so track any Reddit activity over time to see what it really does.
Method
How we measured it
reconnAI puts the same real buying and research questions to AI engines every day. For this study we used more than 1,600 questions from ten categories, asked in the UK and US on the free version of each engine, between 31 August and 25 October 2026. We left out questions that name the company being tracked.
We counted an answer as citing Reddit when at least one of its sources was a reddit.com link. For the thread analysis we used the six categories with more than 100 cited threads, 1,703 threads in all, and matched each one to its posting date and comment count. We split the eight weeks into two four-week months to see whether AI kept citing the same threads.
Every figure is worked out for each category first and then averaged, so each category counts equally and no single one dominates. Because Reddit’s role varies so much by category, the headline 19% has a wide range: we are 95% confident the true average is between 10% and 30%. All data is anonymised.
Which Reddit threads is AI quoting about you?
We run your buyers’ questions every day across the major AI engines and show you the sources behind every answer, Reddit threads included.