Sources cited by ChatGPT.
ChatGPT draws from a massive pre-training corpus and can browse the web in real time. When browsing is active, it retrieves pages from search engines and cites them inline. Without browsing, it relies on training data that includes Reddit threads, Wikipedia articles, news sites, and documentation.
How ChatGPT uses sources.
ChatGPT cites sources in two modes. With browsing enabled, it retrieves live web pages and provides inline citations with URLs. Without browsing, it draws on training data. Reddit, Wikipedia, news outlets, and documentation sites appear most frequently. Source attribution varies by query type: B2B queries lean toward review sites and documentation, while consumer queries favor forums and media.
What ChatGPT cites most often.
reddit.com
The internet's largest forum. Subreddits cover every topic, from product recommendations to technical troubleshooting. LLMs frequently cite Reddit threads as first-hand user experiences.
See data→Wikipedia
wikipedia.org
The free encyclopedia. A foundational knowledge source for every major LLM's training data and real-time retrieval.
See data→G2
g2.com
The largest B2B software review platform. LLMs cite G2 reviews for software comparisons, ratings, and buyer sentiment.
See data→Stack Overflow
stackoverflow.com
The largest developer Q&A platform. A top source for code examples, error resolution, and technical explanations in LLM responses.
See data→linkedin.com
The professional social network. LLMs cite LinkedIn for company profiles, professional bios, and industry discussions.
See data→GitHub
github.com
The world's largest code hosting platform. LLMs cite repositories, README files, issues, and discussions.
See data→Every domain we watch for ChatGPT.
💬Forum sources.
4 trackedDiscussion forums and Q&A sites
reddit.com
The internet's largest forum. Subreddits cover every topic, from product recommendations to technical troubleshooting. LLMs frequently cite Reddit threads as first-hand user experiences.
See data→Stack Overflow
stackoverflow.com
The largest developer Q&A platform. A top source for code examples, error resolution, and technical explanations in LLM responses.
See data→Quora
quora.com
Q&A platform covering broad topics. Cited for expert opinions, personal experiences, and long-form answers.
See data→Hacker News
news.ycombinator.com
Y Combinator's tech community. Cited for developer opinions, startup discussions, and tech industry commentary.
See data→⭐Review sources.
4 trackedSoftware and product review sites
G2
g2.com
The largest B2B software review platform. LLMs cite G2 reviews for software comparisons, ratings, and buyer sentiment.
See data→SourceForge
sourceforge.net
Open-source software directory and review platform. Cited for software downloads, reviews, and project comparisons.
See data→Capterra
capterra.com
B2B software review and comparison platform. Cited for software category lists, feature comparisons, and user reviews.
See data→Trustpilot
trustpilot.com
Consumer review platform. Cited for business reputation, customer sentiment, and service quality assessments.
See data→👥Social sources.
3 trackedSocial networks
linkedin.com
The professional social network. LLMs cite LinkedIn for company profiles, professional bios, and industry discussions.
See data→X (Twitter)
x.com
Real-time social platform. Grok has native access; other LLMs cite X posts for trending topics, opinions, and announcements.
See data→YouTube
youtube.com
The largest video platform. LLMs reference YouTube for tutorials, reviews, and educational content via metadata and transcripts.
See data→📚Wikipedia sources.
1 trackedWikipedia and wikis
📖Documentation sources.
1 trackedTechnical docs and code repos
📋Directory sources.
1 trackedProduct directories and listings
📰Media sources.
1 trackedNews and publications
Questions about ChatGPT sources.
Other AI models we track.
Claude
Anthropic
Anthropic's AI assistant. Known for detailed, sourced responses with web search capabilities.
View sources→
Perplexity
Perplexity AI
An answer engine built around citations. Every response includes numbered source links from live web retrieval.
View sources→
Gemini
Google's AI model. Powered by Google Search, it retrieves and cites live web results with deep integration into Google's index.
View sources→Track which sources LLMs cite for your brand.
xSeek monitors 180+ domains across ChatGPT, AI Overview, Claude, Perplexity, Gemini, and Grok. See exactly when and where your brand gets cited.