Research & Insights

Data-driven findings on AI visibility and citation behavior from the Indexably team.

The Indexably Method Series — 6-Part Research Series

A 6-part research series based on 25,115 citations from 5 AI platforms. We analyzed 18,129 cited pages and 4,622 controls across 213 structural signals to find what actually predicts AI citation.

Start Here: We Studied 18,000 AI-Cited Pages Across 5 Platforms. Here's What We Know (and What We Don't).

Research summary examining 18,000+ AI-cited pages across five platforms, including key findings and implications for AI visibility scoring. Read the overview at /blog/ai-citation-research.

Part 1: What On-Page Signals Actually Differentiate AI-Cited Pages (18,000 Pages, 213 Signals)

Analysis of 213 on-page HTML signals across 18,129 AI-cited pages. Which structural factors differentiate cited from non-cited pages, and how JS vs non-JS rendering changes the picture. Read at /blog/page-level-signals.

Part 2: Domain Authority vs Page Optimization: We Measured Both From the Same Dataset

Domain authority measured against page optimization from the same dataset. Domain rank is 7x more predictive than the strongest page signal, with a 77/23 domain-to-page importance split. Read at /blog/domain-vs-page.

Part 3: The Complete Ranking: Every Factor That Predicts AI Citation, From Strongest to Weakest

All 14 AI citation factors ranked by measured effect size. Quartile analysis showing page optimization only produces measurable lift for high-authority domains. Read at /blog/complete-ranking.

Part 4: How 5 AI Platforms Cite Differently — And What To Do About It

How ChatGPT, Claude, Gemini, Perplexity, and Google AI Overviews weight page-level signals differently, and the volume-weighted scoring approach Indexably uses. Read at /blog/per-model-breakdown.

Part 5: The Indexably Method — Complete Findings With External Research Context

Complete methodology documentation covering study design, statistical methods, all findings, and validation against external research. 500 prompts, 5 AI platforms, 25,115 citations. Read at /blog/the-indexably-method.