> ## Documentation Index
> Fetch the complete documentation index at: https://wiki.platelunchcollective.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Wikidata

> Wikidata is a free, open, machine-readable knowledge base operated by the Wikimedia Foundation.

*Platform* · *Entity & Knowledge Graph*

## Definition

Wikidata is a free, open, machine-readable knowledge base operated by the Wikimedia Foundation. It stores structured data about entities — people, organizations, places, concepts — in a format that both humans and AI systems can query directly.

## Why It Matters for AI Search

Wikidata is one of the most influential entity authority sources feeding both Google's Knowledge Graph and LLM training corpora. A brand with a Wikidata entry — accurate, complete, and linked to Wikipedia and other authoritative sources — has a structured anchor point that AI systems can use to verify and elaborate on what they know about that brand. For many mid-size businesses, establishing a Wikidata presence is a high-leverage, underutilized move.

## Related Terms

<CardGroup cols={2}>
  <Card title="Knowledge graph" href="/ai-search-glossary/knowledge-graph" />

  <Card title="sameAs array" href="/ai-search-glossary/sameas-array" />

  <Card title="Entity verification" href="/ai-search-glossary/entity-verification" />

  <Card title="Wikipedia" href="/ai-search-glossary/wikipedia" />

  <Card title="Entity ID" href="/ai-search-glossary/entity-id" />
</CardGroup>

## Relevant Plate Lunch Collective Services

[Entity SEO](https://www.platelunchcollective.com/services/entity-seo)  [Context Map](https://www.platelunchcollective.com/services/context-map)