The Citation Index · Reports
Reports & Data
Original-data reports, statistics and market analysis on generative engine optimization and the tools that measure it, computed from our own quality-gated index and built to be cited.
5 reportsComputed from the quality-gated indexBuilt to be cited
Latest reportStatistics
Which AI-Visibility Tools Can Your Own AI Agent Actually Query?
We checked all 58 tools in our index for MCP server support. 18 ship one — but only 8 don't gate it behind a paid tier, a third-party subscription, or a sales call.
Read the report01 All reports
Statistics
AI Search Statistics 2026: The Data Behind the Shift
Zero-click search hit 68% and AI Overviews cut organic clicks up to 60% — the sourced 2026 data on traffic, marketer budgets, and our own GEO tool index.
Market analysis
Who's Backing Your GEO Stack? The 2025-2026 Money Wave
Three acquisitions — including Adobe's $1.9B Semrush deal — and $200M+ in funding hit seven tools in our index within 15 months. What each means for buyers.
Report
How AI answer engines cite sources (and why it moves)
Three large studies of AI citations show ChatGPT, Perplexity and Google AI Overviews cite different sources — and that the mix keeps shifting. Here is the data.
Market analysis
The State of GEO & AI-Visibility Tools 2026 — A Landscape Report
An analysis of the 44 most-researched AI-visibility and GEO tools: pricing, engine coverage, API availability and market segments, from verified, sourced listings.
No posts match that type.