AI Source Radar · 15 domains · 4 models

Which sources do AI models actually cite?

Track Reddit, Wikipedia, G2, LinkedIn, and 180+ domains across ChatGPT, Claude, Perplexity, Gemini, Grok, and DeepSeek.

Start tracking sources →See the data
By model

Sources per AI engine.

Each model has its own citation style. Click through to see what it favors and why.

ChatGPT logo

ChatGPT

OpenAI

OpenAI's conversational AI. The most widely used LLM, with browsing and retrieval capabilities that pull from a broad range of web sources.

View sources→
Claude logo

Claude

Anthropic

Anthropic's AI assistant. Known for detailed, sourced responses with web search capabilities.

View sources→
Perplexity logo

Perplexity

Perplexity AI

An answer engine built around citations. Every response includes numbered source links from live web retrieval.

View sources→
Gemini logo

Gemini

Google

Google's AI model. Powered by Google Search, it retrieves and cites live web results with deep integration into Google's index.

View sources→
Last seen

Source activity, across every model.

When was each source last cited? 15 domains tracked across 4 AI models.

SourceChatGPT logoChatGPTClaude logoClaudePerplexity logoPerplexityGemini logoGemini
Reddit100d129dNot seen14d
WikipediaToday61d1d15d
G21d71dToday14d
SourceForge2d61d2d18d
LinkedIn1d62dNot seenNot seen
X (Twitter)Not seenNot seenNot seenNot seen
Stack OverflowNot seen136dNot seenNot seen
GitHubToday61d1d15d
YouTube5dNot seenToday14d
QuoraNot seen61dNot seen15d
CapterraToday61d1d16d
Product Hunt1dNot seen20d17d
Trustpilot1d61dNot seen14d
Medium1d61dNot seen14d
Hacker NewsNot seenNot seenNot seenNot seen
Last 3 daysLast weekNot seen recently
By category

All tracked sources grouped by type.

Forums, wikis, review platforms, docs, news. Each category answers different query intents.

Why it matters

How to see what sources ChatGPT uses

ChatGPT, Claude, Perplexity, and other LLMs pull from different source pools. Some cite live web pages. Others draw from training data that includes Reddit, Wikipedia, and news sites.

The sources an LLM cites directly shape how it describes your brand, recommends your product, and positions you against competitors. If G2 reviews say you're the best CRM, ChatGPT will repeat that claim.

xSeek tracks citation patterns across all major AI models. You see exactly which domains get cited, how often, and whether your brand appears. That's the difference between hoping LLMs say the right thing and knowing they do.

Best tools to check ChatGPT sources

Native UIs like Perplexity and SearchGPT show inline citations. Browser dev tools reveal the actual URLs fetched during retrieval. Enterprise teams use observability layers that log every source for every query.

For ongoing monitoring — tracking whether your brand gets cited more or less over time — you need an AI visibility tool. xSeek monitors citation frequency, share of voice, and source patterns across ChatGPT, Claude, Perplexity, Gemini, Grok, and DeepSeek.

FAQ

Questions about AI citations.

You can check ChatGPT's sources by enabling browsing mode (SearchGPT) which shows inline citations, inspecting network requests in browser dev tools, or using an AI visibility tool like xSeek that tracks citation patterns across ChatGPT responses at scale.
Start tracking

Track which sources LLMs cite for your brand.

xSeek monitors 180+ domains across ChatGPT, Claude, Perplexity, Gemini, Grok, and DeepSeek. See exactly when and where your brand gets cited.

Start monitoring →Book a call