TL;DR
GEO (Generative Engine Optimization) is the practice of optimizing content to be cited by LLMs — ChatGPT, Perplexity, Claude, Gemini, Google AI Overviews. It overlaps with SEO on fundamentals but diverges on format, citations, and authority signals. This guide separates what's real from what's hype, and gives a concrete checklist.
What GEO actually is (vs. SEO)
SEO optimizes for ranking in a list of blue links. GEO optimizes for being cited as a source inside an AI-generated answer. The user never clicks through unless the citation earns it. The asset shifts from "ranked URL" to "extractable, attributable claim."
The two practices share a foundation: high-quality content, structured data, technical health, authoritative signals. They diverge on three things: (1) format — LLMs prefer scannable claims with clear attribution, (2) citation patterns — LLMs cite original research and named entities heavily, (3) freshness — answer engines weight recency far more than classic SEO.
The 5 engines you're optimizing for
- Google AI Overviews — built on Gemini, pulls heavily from indexed content with high E-E-A-T. Optimization overlaps 70% with classic SEO.
- ChatGPT Search — Bing-indexed, weights primary sources, original research, and OpenAI's partnership publishers.
- Perplexity — most citation-aggressive engine. Optimizes well for any source with strong topical authority + recency.
- Claude (with web search) — leans on diverse, named sources; cites academia and journalism heavily.
- Gemini app — combines Google's index with Gemini reasoning; rewards structured answers and schema.
The GEO checklist (8 items)
- Answer the question in the first 100 words. LLMs extract claims from openings. Burying the answer 1,500 words deep means the LLM summarizes a competitor instead.
- Use claim-shaped sentences. "X is Y because Z, according to [source]" is the format LLMs lift directly. Compare to flowing prose, which gets paraphrased away.
- Cite original research and primary sources. LLMs trust pages that themselves cite well. Outbound links to studies, datasets, and authoritative sources are positive signals — not equity leaks.
- Named-entity density. Mention specific tools, companies, people, frameworks by name. LLMs build knowledge graphs from entity co-occurrence — vague pages get ignored.
- Add original data or quotes. A page with one unique statistic ("we surveyed 412 SEOs and found…") is far more citable than a synthesis of existing content. LLMs prefer sources they couldn't have generated themselves.
- Schema markup. Article, FAQPage, HowTo, and Product schema all help LLMs parse content. Especially valuable for Google AI Overviews and Perplexity.
- Update
dateModifiedwhen content changes. Recency is a top signal across all answer engines. Stale dates get pushed down. - Get cited in other places LLMs read. Wikipedia, Reddit, Quora, GitHub READMEs, industry roundups. LLMs build entity reputation across the web, not just your domain.
How to measure GEO performance
Classic SEO has GSC. GEO doesn't have a Search Console yet. The current best-practice stack:
- Manual citation tracking. Run 50–100 target queries weekly across ChatGPT, Perplexity, Claude, Google AI Overviews. Log which sources get cited.
- Tools: Otterly.ai, Profound, Peec.ai, and Ahrefs' Brand Radar are early entrants tracking LLM citations. Expect rapid evolution.
- Referral traffic from chatbots. Filter GA4 by source containing
chatgpt,perplexity,claude,gemini. Volume is still small but growing month-over-month. - Branded query volume in GSC. Indirect signal — as LLMs cite you, branded searches rise.
3 GEO myths to ignore
- "You need llm.txt to be cited." No. llms.txt is a proposal, not a standard. No major LLM uses it as a primary signal in 2026.
- "GEO replaces SEO." No. Classic search still drives the majority of clicks even on AI-heavy SERPs. GEO is additive.
- "Hide content from crawlers to preserve traffic." Blocking GPTBot means losing future citations entirely. The traffic loss from being cited is smaller than the brand loss from being absent.
Where to start
Rewrite your top 10 SEO pages with the first 4 checklist items applied: lead with the answer, use claim-shaped sentences, cite primary sources, increase named-entity density. That's 80% of the GEO uplift available to most sites today.
Related: SEO con IA · SEO for LLMs (ChatGPT, Perplexity) · IA para SEO: herramientas · SEO con ChatGPT: flujo de trabajo.