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Sources are the websites and pages that AI providers reference when generating responses to your prompts. Understanding source citations reveals where AI models get their information and how your content contributes to — or is absent from — those responses.

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What is a source?

When AI providers like ChatGPT, Perplexity, or Google AI Overview answer a question, they often cite the websites they drew information from. These cited websites are sources. For example, when answering “What is the best CRM?”, Perplexity might cite:
  • g2.com/categories/crm (a review platform)
  • hubspot.com/products/crm (a vendor page)
  • forbes.com/advisor/business/best-crm (an editorial article)
Each of these is a source. Topify.ai collects and analyzes all sources cited across your tracked prompts.

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Why sources matter

Source citations are a direct measure of content authority in AI search. If your website is frequently cited as a source:
  • AI providers consider your content trustworthy and informative
  • Your brand gets direct exposure through link attribution
  • Users following citations land on your website
Conversely, if competitor domains are cited frequently but yours isn’t, it signals a content gap that you can address.

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Domain vs URL tracking

Topify.ai tracks sources at two levels:
Aggregated view across all pages on a domain. Useful for understanding which websites AI providers trust most overall.Example: All citations to techcrunch.com/* are grouped together.

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Source categories

Topify.ai classifies each cited domain into a category:
CategoryExamplesWhat it represents
Corporateapple.com, salesforce.comOfficial brand websites
Editorialnytimes.com, techcrunch.comNews and journalism outlets
Institutional.gov, .edu sitesGovernment and academic sources
Referencewikipedia.org, stackoverflow.comKnowledge bases and reference platforms
UGCreddit.com, youtube.comUser-generated content platforms
Understanding which categories dominate helps you decide where to focus content efforts. For instance, if editorial sources are cited most for your prompts, earning media coverage or guest posts on those outlets could increase your visibility.

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Key source metrics

MetricDefinition
Used %How frequently this source appears across all AI responses for your prompts
Avg citationsThe average number of citations this source receives per response when it does appear
Citation countTotal number of times this source has been cited
MentionedWhether your brand was mentioned in responses that also cited this source
For detailed metric formulas, see Source metrics. For instructions on using the sources page, see Analyzing sources.

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Why do different AI providers cite different sources?

Each AI provider has its own training data, retrieval system, and citation preferences. ChatGPT, Perplexity, and Google AI Overview may reference different articles, documentation, or websites when answering the same question. Topify tracks source citations per provider so you can see where each AI engine draws its information from and optimize accordingly.

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How can I get my website cited more often by AI?

Focus on creating authoritative, well-structured content that AI providers can easily reference. Key strategies include adding citations and statistics to your content, using clear headings that match common questions, maintaining up-to-date technical documentation, and building topical authority through comprehensive coverage of your domain.