What do Domain Authority and a GEO Score each measure?
Domain Authority measures how likely a domain is to rank in search, while a GEO Score measures how ready a page is to be cited in AI answers. Moz defines it in its own words: "Domain Authority® (DA) is a search engine ranking score developed by Moz." The same Moz guide adds that "Moz calculates Domain Authority using a machine learning algorithm that evaluates multiple factors, primarily focusing on backlink data." A GEO Score is a 0 to 100 rating that GeoTest calculates from the page itself, across six categories published in the methodology.
| Domain Authority (Moz) | GEO Score (GeoTest) | |
|---|---|---|
| Question it answers | How likely is this domain to rank in search? | How ready is this page or site to be cited in AI answers? |
| Built from | Mostly links pointing at the domain | The page's text, structure, schema, trust signals, dates and crawlability |
| Scope | Whole domain | Each page, plus a site layer for full analyses |
| Scale | 1 to 100, comparative | 0 to 100 against a published rubric |
| How you raise it | Earn more and better links | Fix what the page is missing, then rescan |
Why do Domain Authority and a GEO Score often disagree?
Domain Authority and a GEO Score often disagree because links say nothing about how a page is written. Backlinks are links from other websites to yours, and they are what Domain Authority mostly counts. Links tell a search engine that other sites vouch for you; they do not show whether a page states its key facts plainly, opens each section with the answer, or serves its text before JavaScript runs. Large, well-linked sites often score poorly on GEO for exactly those reasons, and in the GeoTest Benchmark Report 2026, which scored 4,999 sites, the median was 49 out of 100 and 53.1% of the homepages scored below 50. Moz itself notes that "Unlike Google’s ranking algorithms, Domain Authority is not a direct ranking factor", so neither number is something an engine reads directly.
Does authority matter to AI engines?
Authority matters to AI engines, but a GEO Score measures the part you can see and change on your own pages. Authority and Trust is worth 17 of 100 points in the rubric and checks for social proof, an author byline, contact methods, privacy and terms links, and contextual internal links. The site layer adds an About or Team page (10 points), entity completeness (10 points) and consistent schema across pages (7 points). The research agrees that on-page evidence carries weight: the 2023 GEO study found that citing sources and adding quotations and statistics raised visibility in AI answers, with a 40% lift at the top end, and the authors report that pages ranked lower in search results gained more than top-ranked ones.
What GEO Score do most business websites have?
Most business websites have a GEO Score below 50, whatever their Domain Authority. The 4,999 sites in the GeoTest Benchmark Report 2026, all US business homepages, had a median of 49 and a mean of 47.5; only 7.9% scored 65 or more, and none reached 90. The checks they missed were about the writing, not the links: 96.8% had sections that did not open with the answer, and 91.5% had too few specific facts.
Can a site with low Domain Authority be cited by AI engines?
A site with low Domain Authority can be cited by AI engines, because the engines quote passages they can lift and trust, not the domains with the most links. The GEO study published in 2023 found that pages ranked lower in search results gained more from adding sources, statistics and quotations than top-ranked ones did. Small sites also have the most to lose from search alone: AdExchanger reported in 2026 that publishers with fewer than 10,000 daily pageviews have absorbed a 60% decline in Google search referrals, against 47% for mid-sized publishers.
What is a backlink worth in a GEO Score?
A backlink is worth nothing directly in a GEO Score, because the rubric scores what is on your own pages, not who links to them. Link building is the SEO practice of earning links from other websites, and it still helps classic rankings. What the GEO Score counts instead are the links you place yourself: external citations next to a claim earn up to 5 points, and contextual internal links up to 3. A free Quick Scan shows both for any page in about 15 seconds.
Why does a GEO Score matter more than it used to?
A GEO Score matters more than it used to because more searches now end inside an AI answer. Similarweb data shows zero-click searches rose from 56% to 69% between May 2024 and May 2025, and an ALM Corp analysis reports that 83% of searches end without a click when AI Overviews appear, and 93% in AI Mode. Buyers ask chatbots directly too: G2 research published in 2026 found that 71% of B2B software buyers rely on AI chatbots for software research.
Which one should you track?
You should track both numbers, because each one answers a different question. Domain Authority tells you how competitive your link profile is for classic search, and Google's guidance, updated in 2025, still says "The best practices for SEO remain relevant for AI features in Google Search (such as AI Overviews and AI Mode)." The GEO Score tells you how much of your site an AI engine can lift and trust, and what to fix first. A free Quick Scan gives you the GEO Score of any page in about 15 seconds. A Pew Research Center study shows why the second number now matters: users who saw a Google AI summary clicked a result in 8% of visits, against 15% without one.
