AI Visibility

Domain Authority is dead. Not because Moz said so, but because the metric was built for a world where humans clicked through ten blue links. That world is gone. In its place, a new measurement has emerged: Share of Model, the probability that an AI recommends your brand when a user asks a relevant question. What Is Share of Model? Share of Model (SoM) is the percentage of times your brand appears in AI-generated responses across a set of representative queries for your category. Unlike Domain Authority, which estimates your likelihood of ranking on Google, Share of Model directly measures whether AI systems like ChatGPT, Perplexity, Gemini, and Claude mention you when potential customers ask questions you should be answering. ...

Brand mentions now outweigh traditional backlinks for AI citations by a 3:1 ratio, fundamentally reshaping how AI engines like ChatGPT, Perplexity, and Google’s AI Overviews determine authority and credibility. For over a decade, SEO strategy centered on one metric: backlink acquisition. The more high-authority domains linking to your content, the higher your Google rankings climbed. PageRank built an empire on this principle. But AI engines operate on different logic entirely. ...