ChatGPT Citation Share - June 2026
Klaas FoppenThe Most Cited Domains on
ChatGPT in June 2026
Based on Promptwatch data from Jun 1 - Jun 27, 2026 (month-to-date). Citations tracked from real prompt responses using ChatGPT Search when triggered in the UI.
What this means for you
Reddit is in a league of its own: at 3.71% of all ChatGPT Search citations in June, it is cited more than six times as often as the runner-up, Wikipedia (0.56%). When ChatGPT answers questions, it leans heavily on community discussion and first-hand experiences rather than official sources alone.
Even the #1 domain holds under 4% of citations. The vast majority of ChatGPT's citations go to the long tail of smaller, specialized sites. AI search is far less winner-takes-all than classic Google rankings, which means niche sites with genuinely useful content have a real shot at being cited.
How to act on it
- Build a presence on the platforms ChatGPT trusts: an active, genuinely helpful footprint on Reddit in your niche subreddits, a well-maintained Wikipedia presence (where notability allows), and up-to-date profiles on review sites like Trustpilot and G2.
- Don't chase the giants head-on; the long tail is the opportunity. With no single domain above 4%, well-structured, factual content on your own site can absolutely win citations for the specific prompts your customers ask.
- Pitch and contribute to the trusted publishers in this list (TechRadar, Reuters, Forbes). A mention there compounds, because ChatGPT keeps returning to these domains.
ChatGPT Citation Share
May vs June 2026
Side-by-side comparison of citation share for the top domains on ChatGPT Search between May and June 2026 (June is month-to-date).
What this means for you
The biggest story in this comparison is Reddit's drop from 6.11% in May to 3.71% in June, a roughly 40% decline in citation share in a single month. Citation patterns in AI search are volatile: model updates and retrieval changes can reshuffle who gets cited within weeks. Meanwhile smaller sources like GitHub, LinkedIn, and Trustpilot held steady or gained slightly, which suggests ChatGPT is spreading citations across a broader set of sources rather than concentrating them further.
How to act on it
- Track your own citation share monthly rather than relying on a single snapshot. A domain's share can halve (or double) within a month, and reacting to stale data means optimizing for behavior that no longer exists.
- If a shift like Reddit's drop benefits your category, double down now: publish comparison pages, reviews, and documentation while ChatGPT is redistributing citations across more sources.
- Watch the risers: GitHub (0.23% to 0.27%) and Trustpilot (0.18% to 0.22%) both gained. If you're in software, keeping public repos and docs current is a citation channel; if you sell to consumers, actively managing your review profiles is one too.
How we collect this data
We collect millions of prompt responses, citations, and click data from the actual user interfaces of major AI platforms: over 26 billion data points and growing. This gives us one of the largest datasets on how AI search engines cite sources and recommend brands.
Real UI monitoring
Data straight from the interfaces of ChatGPT, Gemini, Perplexity, Claude, AI Overviews, and more.
26B+ data points
Over 26 billion analyzed citations, prompts, and responses, one of the largest AI search datasets available.
Continuously updated
Refreshed constantly so the trends you see reflect the latest behavior of AI search engines.
Aggregated & public
Published freely for the GEO community, based on aggregated, non-identifiable trends.
Want to start tracking your own AI search data? Get started with Promptwatch
Track Your Domain's AI Citation Share
See which domains AI search engines cite most for your industry. Monitor your brand's citation share compared to competitors and get alerts when citation patterns shift.
