We logged every source Perplexity cited across 39 real buyer questions — all 328 of them. Reddit turned up in 87% of answers, more than twice as often as anything else. It was the top-cited source for exactly none of them.
39 buyer questions · 328 citations · 233 domains · July 2026 · US / English · Perplexity only — see scope note
Reddit was cited in 34 of 39 answers (87%). YouTube, in second, managed 15 of 39 (38%). Third place — a single agency site — appeared in 6 of 39, and it falls off a cliff from there.
Nothing else in the data has reach like that. Ask Perplexity a commercial question and a Reddit thread is almost certainly part of the answer. It holds across categories too: ecommerce 92%, B2B SaaS 92%, agencies 77%.
Across all 39 questions, the top-cited page was a Reddit thread zero times.
Reddit is cited once per answer, in 87% of answers — 34 of 328 citations, just 10.4% of the total. It is never the source the engine leans on hardest. It's the source the engine checks itself against.
Reddit isn't the loudest source. It's the most inevitable one.
Implication: the standard advice — "go win Reddit" — misreads what Reddit is doing here. It isn't the destination the engine sends you to. It's the sanity check the engine runs before committing to a name. You don't rank on Reddit. You get mentioned there, and the engine treats that as corroboration for a recommendation it sources elsewhere.
Across 39 questions, 34 distinct domains held the top-cited slot. YouTube took it three times; two domains took it twice; every other winner won exactly once.
Concentration is weak deeper in the data too. The top three domains in each category account for only about a fifth of that category's citations.
There is no incumbent to displace. No five-site cartel. The engine reaches for a different source almost every single time.
200 of the 233 domains in this study (86%) were cited exactly once. Reddit and YouTube together — the two most dominant sources in AI citation by a wide margin — account for 15% of all citations. Everything else, 85% of the pool, is the tail.
The median winner won once. The cost of entry is one page.
That's the whole opportunity stated plainly. The citation graph is not a fortress with a queue outside. It's a wide-open field. Stop trying to beat the top of the list. There isn't one. Be in the pool.
It's corroboration, not traffic. Be the brand people already name in the thread.
In this data there isn't one. The top three hold about a fifth, and 86% of domains appear once.
One citable page per question you want to win beats one flagship page for the category. Breadth is what the data supports.
All of this is Perplexity. Nobody can tell you what wins on ChatGPT or Gemini. Be suspicious of anyone who says they can.
| Metric | Scope | Value |
|---|---|---|
| Total citations logged | Perplexity, 39 questions | 328 |
| Distinct domains cited | Perplexity, 39 questions | 233 |
| Mean citations per answer | Perplexity, 39 questions | 8.4 |
| Answers citing Reddit | Perplexity, 39 questions | 34 / 39 = 87% |
| Reddit's share of all citations | Perplexity, 39 questions | 10.4% |
| Questions where Reddit was top-cited | Perplexity, 39 questions | 0 / 39 |
| Answers citing YouTube | Perplexity, 39 questions | 15 / 39 = 38% |
| YouTube's share of all citations | Perplexity, 39 questions | 4.6% |
| Reddit + YouTube share of citations | Perplexity, 39 questions | 15% |
| Domains cited exactly once | Perplexity, 39 questions | 200 / 233 = 86% |
| Distinct top-cited domains | Perplexity, 39 questions | 34 |
| Top-3 domain share — ecommerce | Perplexity, 13 questions | 21% |
| Top-3 domain share — agencies | Perplexity, 13 questions | 18% |
| Top-3 domain share — SaaS | Perplexity, 13 questions | 18% |
reddit.com, not which subreddit, so we can't tell you which communities do the work. That's the obvious next study and it's running.
One snapshot, July 2026 — engines change retrieval constantly; we're re-running these questions monthly to measure the drift.
The full dataset ships with this report, and verify-numbers.py recomputes every figure above straight from it.In 34 of 39 answers (87%) in the July 1, 2026 snapshot — more than any other source, across every category we tested.
No. Reddit was the top-cited page on 0 of 39 questions, and it accounts for just 10.4% of the 328 citations logged.
Barely concentrated at all: 86% of the 233 cited domains appeared exactly once, and each category’s top three domains hold only about a fifth of its citations.
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