GEO Glossary

Live data · build-in-public

Citation Observatory

Transparent first-party data on whether AI search engines cite this glossary. 43 terms × 5 engines × weekly probes. Site launched 2026-05-14; first scheduled full review 2026-06-19.

Methodology

Each term is probed across ChatGPT, Perplexity, Claude, Copilot, and Gemini using a search-forcing prompt template ("Please search the web for the definition of [term]. Include source URLs."). A cell is marked cited if aisearchglossary.comappears in the engine's source list. Untested cells are simply not yet covered in the current sweep. See editorial methodology for the full protocol.

Cells probed

45 / 215

20.9% of the 215-cell matrix

Cells cited

0 / 45

0.0% citation rate among probed cells

Probe schedule

Last sweep:

Next scheduled:

By engine

EngineCitedNot citedUntestedCited rate
ChatGPT09340.0%
Perplexity09340.0%
Claude09340.0%
Copilot09340.0%
Gemini09340.0%

By term

TermGPTPlxCldCopGem
Agentic retrieval
AI crawler bots
AI Overview
AI Overview citation
AI Search Optimization
Answer block
Answer Engine Optimization
Article Schema
Attribution rate
Authority signals
BM25
Brand mentions in AI answers
Citation match rate
Citation share
Cite-ability
DefinedTerm schema
E-E-A-T (AI search context)
Entity-based SEO
FAQ Schema
Featured snippets
Freshness signals
Generative Engine Optimization
Generative search index
Hallucination grounding
HowTo Schema
Hybrid retrieval
Inverted index
JSON-LD
Knowledge Graph
LLM Optimization
LLMS.txt
Microsoft Copilot citations
Passage-level optimization
Pillar content
RAG (Retrieval-Augmented Generation)
Reranking
Search Generative Experience (SGE)
Statistical density
Sub-document retrieval
Sub-passage extraction
Sycophancy vs cite-able fact
Topic clusters
Vector embeddings