Watch: Source Authority
How trustworthy and credible a source is judged to be, which shapes whether search engines and AI systems retrieve, rely on, and cite it.
Transcript
When you ask an AI system a question, how does it decide which sources to trust? It comes down to something called source authority. This is a measure of how credible and trustworthy a website is judged to be.
Source authority is built over time. It relies on real expertise, a consistent track record of facts, and links from other respected sites.
For AI models, this authority acts as a crucial filter. When an AI gathers information to draft an answer, it leans heavily on the sources it trusts and discounts the rest. This tendency is known as grounding bias. It means that even if a page is highly relevant, the AI might still pass it over in favor of a more authoritative source that says the same thing.
It is important to separate source authority from brand authority. Brand authority is simply how much space a company occupies in an AI's memory. But the two reinforce each other. The sources that are trusted across the web are also the ones the AI has seen the most. Ultimately, earning source authority is the most direct route to gaining visibility in AI answers.