Plain-language definitions for the 2026 operator stack.
Agentic AI, AIO, AEO, structured data, and the operator vocabulary that's emerged across the last 24 months. Short answers, real depth where it earns its space.
AIO and AEO
13AI Visibility
How often and how accurately a brand appears inside AI engine answers (ChatGPT, Claude, Perplexity).
ReadGPTBot
OpenAI's web crawler that indexes content for ChatGPT and the OpenAI training corpus.
ReadClaudeBot
Anthropic's web crawler that indexes content for Claude's search and citation features.
ReadPerplexityBot
Perplexity AI's web crawler that powers citation in Perplexity's search and answer engine.
ReadGEO (Generative Engine Optimization)
Optimizing content for citation inside AI-generated answer paragraphs. Used interchangeably with AEO by most practitioners.
Readllms-full.txt
The depth file companion to llms.txt. Contains the full canonical content AI engines should index for citation.
ReadAI Crawler
Umbrella term for the web crawlers operated by AI engines (GPTBot, ClaudeBot, PerplexityBot, Google-Extended, Applebot-Extended, and 25+ more).
ReadShare of Voice (AI)
Your share of citation slots versus competitors inside AI engine answers for queries relevant to your category.
ReadE-E-A-T
Experience, Expertise, Authoritativeness, Trustworthiness. Google's quality framework that also drives AI engine ranking.
ReadAEO (Answer Engine Optimization)
Optimizing content so it becomes the answer AI engines synthesize, not just a blue link below it.
Readllms.txt
A markdown file at /llms.txt that gives AI engines a curated, plain-text map of your site's key content.
ReadGoogle-Extended
The robots.txt token that controls whether Google uses your content for Gemini and AI training, separate from Search.
ReadGoogle AI Overviews
Google's AI-generated answer that appears above the blue links, summarizing the web for a query.
Read
Agentic AI
4AI Agent
Software that decomposes a goal into multi-step actions, executes those actions across applications, and reports back, with optional human approval at each step.
ReadAgentic Workflow
A multi-step task an AI agent plans and executes, watching, reading, drafting, and acting, rather than answering a single prompt.
ReadHuman-in-the-Loop
A design where an AI agent drafts and proposes, but a person approves before consequential actions execute.
ReadMCP (Model Context Protocol)
An open standard that lets AI models connect to tools and data sources through a common interface.
Read