What is Generative Engine Optimization (GEO)?

What the research actually supports

The foundational academic work on GEO (Aggarwal et al., presented at KDD 2024) found that adding real statistics, quotations and citations to authoritative sources can measurably raise how often a page is cited by generative engines — up to roughly 40% in the best case on their benchmark. Classic keyword stuffing did not transfer and could make things worse.

Newer 2026 replication studies temper the hype: on already well-written pages, token-level style tweaks like swapping in 'confident' language rarely help and can even hurt. What holds up is substance — density of real facts, credible sourcing and fluent writing.

The single biggest lever: off-site brand presence

Large 2026 correlation studies (e.g. Ahrefs across tens of thousands of brands) found that off-site brand mentions — including on YouTube — track with AI visibility far more strongly than backlink counts or sheer number of pages. Roughly 85% of the mentions inside AI answers come from third-party pages, not a brand's own site.

The practical read: publish things worth referencing (original data, canonical explainers, free tools) and earn mentions across the web. These are correlations, not guarantees — but the direction is consistent across studies.

What to skip

• •llms.txt files — a large study found 97% received no requests at all; they don't move AI visibility.
• •FAQ and HowTo schema for rich results — Google removed those features in 2026.
• •'Authoritative tone' rewrites and keyword density — low or negative ROI in recent tests.