AI SEO & GEO Glossary

Comprehensive definitions of 53 terms in Generative Engine Optimization, AI search, and LLM visibility

A

AI Crawler

Technical

Automated bots used by AI platforms (GPTBot, ClaudeBot, Google-Extended) to index and gather web content for training and real-time retrieval.

Why it matters: If you block AI crawlers in robots.txt, your business has zero AI visibilityβ€”these bots cannot access your content to include you in AI responses.

AI SEO (Artificial Intelligence Search Engine Optimization)

AI SEO

The practice of optimizing content for AI-powered search and recommendation systems, including both traditional search engines with AI features and pure AI platforms.

Why it matters: Traditional SEO alone is insufficient. AI SEO addresses how LLMs discover, understand, and cite your content in generated responses.

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AI Visibility

GEO

The frequency and prominence with which your business appears in AI-generated responses across platforms like ChatGPT, Claude, Perplexity, and Gemini.

Why it matters: High AI visibility means potential customers discover you when asking AI for recommendations. Low visibility means you're invisible in the AI-powered search era.

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Attribution

GEO

How AI systems credit sources when citing information in responsesβ€”can be inline links, footnotes, or mentions without direct attribution.

Why it matters: Proper attribution drives brand awareness and potential website traffic. Different platforms have different attribution styles.

Related:Citation FormatPerplexitySource Citation

B

Bing Chat (Copilot)

Platforms

Microsoft's conversational AI assistant integrated with Bing search, powered by OpenAI technology.

Why it matters: Bing Chat combines traditional search results with AI-generated answers, appearing in Windows, Edge, and Microsoft 365 products.

Related:ChatGPTAI SearchMicrosoft

C

Citation Engineering

GEO

Strategic content optimization techniques designed to increase the likelihood of being cited by AI systems in their generated responses.

Why it matters: Unlike traditional SEO (ranking focus), citation engineering focuses on being the authoritative source AI platforms reference.

Related:GEOContent DepthAuthority Signals

Claude

Platforms

Anthropic's AI assistant focused on helpful, honest, and harmless responses, known for detailed citations and nuanced answers.

Why it matters: Claude often provides more detailed source attribution than other platforms, making it valuable for businesses seeking explicit citations.

Related:ClaudeBotAnthropicAI Search

ClaudeBot

Technical

Anthropic's web crawler used to gather training data and real-time information for Claude AI.

Why it matters: Allowing ClaudeBot access in robots.txt is essential for visibility in Claude responses.

Content Clustering

AI SEO

Organizing related content pieces around pillar topics to help AI systems understand your topical authority and expertise.

Why it matters: Well-clustered content signals depth of knowledge, making AI more likely to cite you as an authoritative source.

Related:Content DepthTopic AuthorityInternal Linking

ChatGPT

Platforms

OpenAI's conversational AI assistant powered by GPT-3.5 and GPT-4, with 180M+ monthly active users.

Why it matters: As the most widely-used AI platform, ChatGPT visibility directly impacts brand discovery for millions of potential customers.

Related:GPTBotOpenAIAI Search

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Core Web Vitals

Technical

Google's user experience metrics (LCP, FID, CLS) measuring page load speed, interactivity, and visual stability.

Why it matters: Slow pages may be partially crawled or timed out by AI crawlers, resulting in incomplete understanding of your content.

Related:Page SpeedMobile OptimizationLCP

Crawl Budget

Technical

The number of pages a crawler (AI or traditional) will index from your site within a given timeframe.

Why it matters: Limited crawl budget means AI systems may miss important pages. Optimize with sitemaps and clear site structure.

Related:SitemapAI CrawlerRobots.txt

Citation Format

GEO

How AI presents sources: inline links, footnotes, parenthetical mentions, or no attribution.

Why it matters: Different platforms use different formats. Perplexity shows numbered citations; ChatGPT may mention without links.

Related:AttributionSource CitationPerplexity

D

Deep Linking

Technical

Linking to specific sections or pages within your site rather than just the homepage, helping AI understand granular content.

Why it matters: Deep links in internal navigation and external citations help AI discover and cite specific expertise areas.

Related:Internal LinkingSite Architecture

E

Entity Recognition

AI SEO

How AI systems identify and understand businesses, people, places, and concepts in content.

Why it matters: Clear entity signals (structured data, consistent naming) help AI reliably recognize and cite your business.

Related:Structured DataSchema MarkupKnowledge Graph

E-E-A-T (Experience, Expertise, Authoritativeness, Trustworthiness)

AI SEO

Google's content quality framework that also influences how AI systems evaluate sources.

Why it matters: AI platforms favor sources demonstrating expertise and authority. Build E-E-A-T through credentials, reviews, backlinks.

Related:Authority SignalsContent QualityTrust Signals

F

Freshness Signals

Technical

Timestamps and update indicators (datePublished, dateModified) showing content recency.

Why it matters: AI systems prioritize up-to-date information. Stale content (>2 years) rarely appears in AI responses.

Related:Schema MarkupContent UpdatesArticle Schema

G

Gemini

Platforms

Google's multimodal AI model (formerly Bard) capable of understanding text, images, and other media.

Why it matters: Deeply integrated with Google ecosystem, Gemini influences search results and Google Assistant responses.

GEO (Generative Engine Optimization)

GEO

The practice of optimizing your online presence to increase visibility and attribution in AI-generated responses from large language models.

Why it matters: As AI-powered search grows, GEO is becoming as critical as traditional SEO for business discoverability.

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GEO Score

GEO

A quantitative measure (0-9 scale) of technical readiness for AI visibility based on factors like schema markup, llms.txt, crawler access, and content optimization.

Why it matters: High GEO score indicates strong technical foundation for AI discovery, though content quality and authority also influence actual mention rate.

Related:GEOMention RateTechnical SEO

Google AI Overviews

Platforms

AI-generated summaries appearing at the top of Google search results (formerly Search Generative Experience/SGE).

Why it matters: Appearing in AI Overviews means visibility before traditional search results, capturing attention for 15-20% of searches.

Google-Extended

Technical

Google's crawler token for accessing content specifically for generative AI training data.

Why it matters: Separate from regular Googlebot; blocking Google-Extended prevents your content from training Google's AI models.

Related:Robots.txtAI CrawlerGemini

GPTBot

Technical

OpenAI's web crawler used to gather training data and real-time information for ChatGPT.

Why it matters: Allowing GPTBot access in robots.txt is essential for ChatGPT visibility. Blocking it guarantees zero ChatGPT mentions.

Grounding

AI SEO

The practice of anchoring AI responses to factual, verifiable sources rather than generating potentially inaccurate information.

Why it matters: Well-g AI systems prioritize authoritative sources with strong signals (structured data, citations, reviews).

Related:HallucinationAuthority SignalsE-E-A-T

H

Hallucination

AI SEO

When AI generates false or misleading information not supported by training data or retrieved sources.

Why it matters: Strong authority signals and structured data reduce risk of AI hallucinating incorrect information about your business.

Related:GroundingAccuracySource Verification

K

Knowledge Graph

AI SEO

Structured database of entities (businesses, people, places) and their relationships, used by search engines and AI systems.

Why it matters: Being in knowledge graphs (Google, Wikidata) provides strong entity signals that AI systems trust and cite.

L

LLM (Large Language Model)

Platforms

AI models trained on vast amounts of text data (GPT-4, Claude, Gemini) capable of understanding and generating human language.

Why it matters: LLMs power the AI platforms where your potential customers search for recommendations and information.

LLM Optimization

AI SEO

Synonym for AI SEO; the process of preparing content and technical infrastructure for optimal consumption by large language models.

Why it matters: LLM-optimized content is structured, well-marked with schema, and designed for machine parsing alongside human readability.

Related:AI SEOGEOStructured Data

Local Business Schema

Structured Data

Schema.org markup defining location-based business information: name, address, phone, hours, service area, reviews.

Why it matters: Critical for local businesses; helps AI reliably extract and cite location-specific information in local queries.

M

Mention Rate

GEO

The percentage of relevant AI queries where your business is mentioned (0-100%), measuring actual AI visibility.

Why it matters: Primary metric for AI visibility success. 50%+ mention rate indicates strong AI presence; 0% means you're invisible.

Related:AI VisibilityCitation RateGEO

Multimodal Content

AI SEO

Content combining text, images, video, and audio that AI systems can understand through multiple modalities.

Why it matters: As AI models become multimodal (Gemini, GPT-4V), properly marked images and media enhance discoverability.

Related:Alt TextImage SchemaVideo Schema

N

Natural Language Processing (NLP)

Technical

AI's ability to understand, interpret, and generate human language.

Why it matters: Understanding NLP helps you structure content in ways AI systems can parse: clear headings, natural language, Q&A formats.

O

Organization Schema

Structured Data

Schema.org markup defining your company: name, logo, contact information, social profiles, founding date.

Why it matters: Foundational schema that helps AI understand your business identity consistently across all content.

P

Perplexity

Platforms

AI-powered answer engine with explicit source citations, processing 500M+ monthly searches.

Why it matters: Known for transparent attribution; being cited in Perplexity provides visible brand exposure with direct links.

Related:AI SearchCitation FormatSource Attribution

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Position Tracking

GEO

Where your mention appears in AI responses: early (first third), middle, or late (last third).

Why it matters: Early mentions signal stronger relevance. Users often focus on early parts of AI responses before reading further.

Prompt Engineering

AI SEO

Crafting specific inputs to elicit desired outputs from AI systems.

Why it matters: Understanding common user prompts helps you optimize content for the questions people actually ask AI.

Related:Query GenerationUser IntentSearch Behavior

Q

Query Generation

GEO

Creating test questions that mirror real user behavior to measure AI visibility.

Why it matters: Effective testing requires queries your actual customers would ask: "best X in Y", "top Z tools", comparison queries.

Related:User IntentMention RateAI Visibility Testing

R

RAG (Retrieval-Augmented Generation)

Technical

AI technique combining information retrieval (search) with text generation to ground responses in real sources.

Why it matters: RAG-based systems (Perplexity) are more likely to cite specific sources, making structured, authoritative content crucial.

Related:GroundingSource CitationAuthority Signals

Rich Results

Structured Data

Enhanced search results using structured data: star ratings, FAQ accordion, recipe cards, event details.

Why it matters: Schema that creates rich results in Google also helps AI extract structured information reliably.

Related:Schema MarkupFeatured SnippetStructured Data

S

Schema Markup (Schema.org)

Structured Data

Standardized structured data vocabulary using JSON-LD, Microdata, or RDFa formats to mark up content with machine-readable information.

Why it matters: AI can parse schema with 95%+ accuracy vs. 60-70% for unstructured content. Single highest-impact GEO factor.

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SGE (Search Generative Experience)

Platforms

Google's original name for AI-powered search interface, now called Google AI Overviews.

Why it matters: Historical term still widely used; represents Google's integration of AI into traditional search.

Sitemap

Technical

XML file listing all important pages on your site for crawlers to discover.

Why it matters: Helps AI crawlers understand site structure and discover all content, especially deep pages.

Related:Crawl BudgetSite ArchitectureAI Crawler

Speakable Schema

Structured Data

Schema.org markup identifying content sections suitable for voice assistants to read aloud.

Why it matters: Optimizes for voice search and AI assistants (Siri, Alexa, Google Assistant) that use similar technology to ChatGPT.

Related:Voice SearchSchema MarkupStructured Data

Structured Data

Structured Data

Organized information using standardized formats (JSON-LD, Microdata) that machines can parse reliably.

Why it matters: Foundation of AI visibility. Structured data makes your business information 95%+ accurate to AI vs. 60-70% unstructured.

Related:Schema MarkupJSON-LDRich Results

T

Training Data

Technical

Content used to teach AI models during their initial training phase.

Why it matters: While training data is historical, current AI systems also retrieve real-time informationβ€”both matter for visibility.

U

User Intent

AI SEO

The goal behind a search query or AI prompt: informational, transactional, navigational, or comparison.

Why it matters: AI systems prioritize content matching user intent. Optimize for why users ask questions, not just what they ask.

Related:Semantic SearchQuery GenerationContent Strategy

V

Z

Zero-Click Query

GEO

Search or AI query answered completely without user clicking through to any website.

Why it matters: 60-70% of AI queries are zero-click. Being mentioned is critical for brand awareness even without traffic.

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