Definition

GEO (Generative Engine Optimisation)

Generative Engine Optimisation (GEO) is the practice of improving how often and how favourably a brand appears in the output of generative search engines. In practice it is used interchangeably with AEO.

The two terms emerged from different communities — GEO from academic work on generative engines, AEO from the SEO industry — and now describe the same set of tactics.

Where they differ slightly in emphasis: GEO discussions tend to focus on content structure and source authority, AEO discussions on measurement and reporting.

Nostimates measures geo across twelve AI answer surfaces. Request access →

All terms

AEO (Answer Engine Optimisation)AI Overviews AI Mode Citation share n-sampling Query fan-out Grounding Share of voice (AI)Extraction success rate Surface Answer engine Citation Brand mention Mention rate Confidence interval Statistical significance Citation volatility Non-determinism Reproducibility Identity-free collection Personalisation Locale Residential proxy Bot detection Collection cost Credit Evidence retention Audit trail Parser version Canary prompt Data freshness Cadence Prompt set Head term Long-tail query Competitive set llms.txt robots.txt AI crawler Training crawler Retrieval-augmented generation (RAG)Hallucination Answer box Featured snippet Zero-click search Entity Entity salience Knowledge graph Structured data JSON-LD schema.org FAQ schema Answer-first content Chunk Embedding Semantic search Prompt injection Market coverage Sentiment analysis Position tracking White-label data