All terms
The 2026 vocabulary of Generative Engine Optimization, with live per-term citation status across ChatGPT, Perplexity, Claude, and Copilot.
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Schema cluster (1)
Search foundations (3)
foundational
AI Overview
AI Overview is Google's generative search feature that produces AI-synthesized answers at the top of results, citing multiple sources. It is the 2024 rename and rollout of Search Generative Experience (SGE).
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Search Generative Experience (SGE)
Search Generative Experience (SGE) was Google's labs-stage AI search feature launched in May 2023, the precursor to AI Overview. Renamed and graduated to AI Overview at Google I/O in May 2024.
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Topic clusters
Topic clusters are a content architecture pattern: one pillar page covers a topic broadly, multiple spoke pages drill into sub-topics, all interlinked. Originated as classic SEO methodology; increasingly adapted for AI-search topic coverage, entity clarity, and retrieval-friendly content organization.
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