Definition

Locale

Locale is the combination of market and language used during collection. On SERP-based engines it is set with country and language parameters; on chat engines it is largely determined by the language the prompt is written in.

AI answers differ enormously between markets, so a global citation share is an average of things that should not be averaged.

On ChatGPT there is no locale header to set: the prompt language is the locale control, which means measuring Japan requires writing the prompt in Japanese.

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All terms

AEO (Answer Engine Optimisation)GEO (Generative 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 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