We Analyzed 207,297 AI Citations for Shopping Queries. Reddit Was Almost Nowhere.
We analyzed 207,297 AI citations from 107 Shopify stores. Reddit was 0.5% of shopping citations — and ChatGPT cited it zero times. What AI actually cites when shoppers ask what to buy: product pages, not forums.
The most-repeated advice in AI search optimization is "get on Reddit." Our data from 107 Shopify stores says that for shopping queries, that advice is wrong on the engine that matters most.
If you've read anything about Generative Engine Optimization (GEO) this year, you've seen the Reddit claim: Reddit is the single most-cited source in AI search, cited many times more than typical websites, so brands should invest in community presence. Industry studies back this up — for SaaS and technology queries.
Ecommerce is not SaaS. FoundGPT tracks what AI assistants actually answer when real shoppers ask real buying questions — "best commuter e-bike under $2,000", "non-toxic play mats for toddlers" — across the engines shoppers actually use. Every answer's sources get recorded and categorized.
This is what 207,297 citations say about where AI engines send shoppers. Spoiler: it isn't Reddit.
Key findings (TL;DR)
- Reddit was cited 1,032 times out of 207,297 citations — 0.5%. For shopping queries, Reddit is a rounding error, not a pillar.
- ChatGPT cited Reddit exactly zero times in our corpus. Not "rarely" — zero, across 58,846 ChatGPT citations and 3,601 shopping prompts. If your buyers use ChatGPT, a Reddit-first GEO strategy earns you nothing.
- Retailer and brand pages dominate every engine. On ChatGPT, product and store pages account for 67.5% of all citations (52.8% retailer + 14.7% brand sites). AI answers shopping questions with shopping pages.
- Where Reddit does appear, it's Google AI Mode and Perplexity — 578 and 453 citations respectively. If your niche skews toward those engines, community matters. Otherwise it doesn't.
- "Community" in shopping means YouTube, not forums. ChatGPT's community citations are YouTube reviews, Goodreads, Pinterest and Lyst. YouTube alone out-cites Reddit two-to-one corpus-wide (2,189 vs 1,032).
- Independent Shopify stores can out-cite Amazon. Within the niche buyer prompts we track, two independent stores in our fleet each earned over 240 ChatGPT citations — amazon.com earned 22 in the same prompts. In its own niche, a well-structured independent store beats the giants by 10x. The field is open.
Scope of study
The dataset: 207,297 citation instances collected between April 19 and August 9, 2026, from 24,216 visibility checks run for 107 Shopify stores across 3,601 distinct buyer-decision prompts, spanning 17,695 unique cited domains on five engines: ChatGPT, Google Gemini, Google AI Mode, Perplexity, and Claude.
Three honesty notes, because a study you can't trust is worthless:
- This is descriptive, not causal. We report what engines cited, not why any single page was chosen.
- The prompt mix reflects our merchants — independent ecommerce niches (cycling, books, fashion, outdoor gear, wellness), weighted toward buyer-decision questions. A corpus built on electronics price-comparison prompts might look different.
- Claude is under-sampled in our corpus (158 citations — too few to report). For what it's worth, OtterlyAI's dedicated Claude study found Reddit at exactly 0% there too, on a 379,321-citation dataset.
Finding 1: AI answers shopping questions with shopping pages
Share of citations by source category, per engine:
| Source category | ChatGPT | Google AI Mode | Perplexity | Gemini |
|---|---|---|---|---|
| Retailer / marketplace | 52.8% | 43.8% | 32.0% | 33.3% |
| Brand / store sites | 14.7% | 9.1% | 6.7% | 10.3% |
| Blogs | 7.0% | 8.6% | 8.4% | 6.9% |
| Community / forums | 3.6% | 16.4% | 19.4% | 8.7% |
| News | 3.2% | 4.0% | 4.5% | 2.5% |
| Review sites | 2.6% | 3.1% | 5.7% | 2.5% |
| Unclassified | 16.0% | 15.0% | 23.3% | 35.8% |
(Gemini's high unclassified share is structural: Gemini masks 99.7% of its citation URLs behind redirect links — a finding big enough to get its own article.)
The pattern is unambiguous. When someone asks an AI assistant what to buy, the assistant reaches for pages where the product lives: retailer listings, marketplace pages, and the stores' own sites. Editorial and community content fills in around the edges — it doesn't lead.
This mirrors what OtterlyAI found for Claude in SaaS (64% brand domains) — but in shopping the effect extends to every engine we track.
Finding 2: The Reddit number, engine by engine
Reddit citations across the full corpus:
| Engine | Reddit citations | Total citations | Reddit share |
|---|---|---|---|
| ChatGPT | 0 | 58,846 | 0% |
| Google AI Mode | 578 | 17,145 | 3.4% |
| Perplexity | 453 | 8,190 | 5.5% |
| Gemini | 1 | 122,958 | ~0% |
| All engines | 1,032 | 207,297 | 0.5% |
Sit with the ChatGPT row for a second. ChatGPT is the assistant your shoppers most likely use — it's where most of the AI-referred sessions we measure on live storefronts come from. Across four months of shopping prompts, it cited Reddit zero times.
The "Reddit dominates AI search" finding is real — in SaaS and tech verticals, on specific engines. It just doesn't transfer to ecommerce, and it especially doesn't transfer to ChatGPT answering shopping questions. Porting that playbook to your store means investing in the one channel our data says pays nothing on the engine that matters most.
Finding 3: Where Reddit does matter — and which communities
On Google AI Mode and Perplexity, community content holds a real 16–19% share, and Reddit is a meaningful part of it. Which subreddits got cited?
| Subreddit | Citations |
|---|---|
| r/cycling | 169 |
| r/mtb | 55 |
| r/journaling | 45 |
| r/gravelcycling | 43 |
| r/suggestmeabook | 40 |
| r/malefashionadvice | 30 |
| r/velo | 29 |
| r/booksuggestions | 24 |
(The subreddit mix partly reflects our merchants' niches — that's the point: your niche's subreddits are what matter, not Reddit in general.)
Notice what these have in common: they're hyper-specific enthusiast communities with substantive threads — "what gravel bike for a 100km commute" — not brand-promotion spaces. If you sell into a niche with a genuinely active enthusiast subreddit AND your buyers use Perplexity or Google's AI results, authentic community presence can earn citations. That's the narrow, honest version of the Reddit advice.
Finding 4: "Community" in shopping means YouTube
Top community sources cited (excluding Gemini's masked URLs):
- YouTube — #1 community source on every engine (784 on AI Mode, 600 on Perplexity, 324 on ChatGPT)
- Reddit — #2 on AI Mode and Perplexity, absent on ChatGPT
- Goodreads, Pinterest, Lyst, Instagram, Facebook — the rest of ChatGPT's community mix
Corpus-wide, YouTube (2,189) out-cites Reddit (1,032) two-to-one. If you're going to invest anywhere off-site for AI visibility in ecommerce, a product review or comparison video is better-supported by the data than a Reddit thread — and it works on ChatGPT, where Reddit doesn't.
What this means for your store
1. Your product pages are the battlefield. Two-thirds of what ChatGPT cites for shopping queries is retailer and brand pages. A product page with a clear title, complete structured data, real descriptions, and visible pricing/availability is your single highest-leverage AI-visibility asset. Not your social presence. Not a forum campaign.
2. You don't need to be Amazon. Citations spread across 17,695 domains, and inside their own niches, independent Shopify stores in our fleet out-cite amazon.com by 10x on ChatGPT. AI engines reward the most useful page for the specific question, not the biggest domain.
3. Right-size the Reddit effort. Selling in a niche with an active enthusiast subreddit, and your buyers use Perplexity or Google AI results? Genuine participation can earn citations. Everyone else: the hours are better spent on product pages and a YouTube review.
4. Match the engine to your buyer. The engines behave differently enough that "AI search" isn't one channel — ChatGPT is brand-and-retail, Perplexity and AI Mode lean community, Gemini hides its sources. Optimizing blind is guessing.
Check where your store stands
FoundGPT's free scanner checks whether your store's pages give AI engines what they cite — structured data, extractable content, the fundamentals this study shows actually get referenced: foundgpt.app/scan
Shopify merchants can track their own mentions and citations across all five engines — and see the actual sessions and orders AI sends them — with the FoundGPT app.
Methodology: citations were collected via FoundGPT's visibility checks — live prompts run against each engine's consumer surface, with every cited URL recorded and categorized (retailer, brand site, blog, community, news, review site). Counts are citation instances, not unique pages. We report counts and shares, never causal claims. Running your own GEO experiment on this? We'd love to compare data: hello@foundgpt.app.
About the author
Rahul — Founder, FoundGPT
Rahul built FoundGPT and ran the analysis behind this study. Across 111 Shopify stores he has run 23,000+ real AI-search checks on ChatGPT, Gemini, Google AI Mode and Perplexity, and applied ~99,000 structured-data fixes.