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Authority signal is any indicator that a web source is trustworthy, expert, and reliable on a given topic. In the context of AI visibility, authority signals include editorial bylines from known experts, publication on established domains, citation by other authoritative sources, and a track record of accurate, well-structured content on the topic.

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Why it matters

LLMs weight authoritative sources more heavily when selecting which brands to mention and cite. A brand mentioned in a Forbes article, a Wikipedia entry, or an industry-specific publication carries more weight in AI-generated answers than a brand mentioned only on its own website or on low-authority aggregator sites. Authority signals are the currency of AI citability.

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How it applies in practice

Cited’s source preference hierarchy ranks sources by authority tier: established editorial publications at the top, structured reference sites second, industry-specific publications third, brand-owned content fourth, and aggregators fifth. Brands pursuing higher mention rates and citation rates should invest in earning coverage on higher-tier sources rather than relying solely on owned content.