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12 — GEO: Generative Engine Optimization

GEO optimizes your site for AI search engines — Google AI Overviews, ChatGPT Search, Perplexity, Claude Web, Gemini, and Bing Copilot.

Traditional SEO gets you ranked in search results. GEO gets you cited by AI.

Why GEO Matters

  • AI answers now appear above traditional search results
  • 79% of AI-generated responses include citations from web sources
  • Brand mentions correlate with AI visibility 3x more than backlinks (Ahrefs, 2025)
  • Only 11% of domains get cited by both ChatGPT and Google AI Overviews for the same query

Setup

1. Include GEO Functions

Copy assets/geo-functions.php to your child theme and include it:

// In functions.php
define('GEO_SAMEAS', [
    'https://en.wikipedia.org/wiki/Your_Company',  // highest priority
    'https://www.wikidata.org/wiki/Q12345',         // machine-readable entity ID
    'https://www.linkedin.com/company/yourcompany',
    'https://www.youtube.com/@yourcompany',
    'https://twitter.com/yourcompany',
    'https://github.com/yourcompany',               // for tech companies
]);
define('GEO_LANGUAGES', ['en', 'zh']);
define('GEO_CONTACT_EMAIL', 'info@example.com');
define('GEO_CONTACT_PHONE', '+86-xxx-xxxx-xxxx');

require_once get_stylesheet_directory() . '/geo-functions.php';

This auto-enables:

  • Triple JSON-LD schema (Organization + WebSite + Article + BreadcrumbList)
  • Speakable markup for voice assistants
  • AI-friendly robots.txt with tiered bot management
  • Auto-generated /llms.txt
  • AI bot tracking headers
  • First-paragraph marking for quick-answer extraction

2. Verify

# robots.txt — should show tiered AI bots
curl https://yourdomain.com/robots.txt

# llms.txt — auto-generated from site content
curl https://yourdomain.com/llms.txt

# Schema — check JSON-LD in page source
curl -s https://yourdomain.com/ | grep 'application/ld+json'

AI Crawler Tiers

Tier Bot Service Action Why
1 GPTBot ChatGPT ALLOW Blocking = invisible to ChatGPT
1 OAI-SearchBot ChatGPT Search ALLOW Search-only, no training
1 ChatGPT-User ChatGPT browsing ALLOW User-initiated requests
1 ClaudeBot Claude ALLOW Blocking = invisible to Claude
1 anthropic-ai Anthropic ALLOW Claude ecosystem
1 PerplexityBot Perplexity ALLOW Best referral traffic source
2 Google-Extended Gemini training ALLOW Does NOT affect Google Search ranking
2 Applebot-Extended Siri / Apple Intelligence ALLOW Apple ecosystem
2 cohere-ai Cohere models ALLOW Enterprise AI
2 CCBot Common Crawl ALLOW Open training data
3 Bytespider TikTok/ByteDance BLOCK Aggressive crawler, low value, high resource cost

Writing for AI Citability

Research from Princeton/Georgia Tech/IIT Delhi (2024) shows optimized content gets 30-115% higher AI visibility.

The Citability Formula

Best paragraph length: 134-167 words. This is the sweet spot for AI citation extraction.

5 Rules for Citable Content

1. Answer First (30% of citability score)

Bad:

In the dynamic landscape of international trade, many factors influence the choice of payment method. After careful consideration of various options...

Good:

T/T (Telegraphic Transfer) is the most common payment method for B2B trade, used in over 70% of international transactions. It offers low fees (typically 0.1-0.5%), fast processing (1-3 business days), and works with any bank worldwide.

Pattern: First sentence = complete answer. Following sentences = supporting evidence.

2. Self-Contained Paragraphs (25%)

Each paragraph should be understandable without reading the rest of the article. AI engines extract individual paragraphs as citations — if yours requires context from a previous paragraph, it won't be selected.

3. Structured Content (20%)

Use tables for comparisons, lists for features, and clear H2/H3 headings. AI engines strongly prefer structured content over prose paragraphs.

Format AI Preference When to Use
Tables Highest Comparisons, specs, pricing
Numbered lists High Step-by-step, rankings
Bullet lists High Features, requirements
Short paragraphs Medium Explanations, context
Long paragraphs Low Avoid — break into 2-4 sentences

4. Statistical Density (15%)

Include specific numbers, percentages, prices, and measurements. AI engines prioritize content with concrete data over vague claims.

Bad: "Our trailers are very affordable and ship quickly." Good: "Flatbed semi-trailers start at $8,500 FOB Qingdao, with 15-25 day lead time and 1-unit MOQ."

5. Unique Data (10%)

Original research, proprietary data, first-hand experience, and expert insights score highest. AI engines de-prioritize generic content that exists on thousands of sites.

sameAs: The Entity Signal

The sameAs property in your Organization schema is the #1 signal for AI entity recognition. It tells AI engines "this is the same entity as the one on Wikipedia/LinkedIn/etc."

Priority order:

  1. Wikipedia — highest authority for entity recognition
  2. Wikidata — machine-readable entity ID (Q-number)
  3. LinkedIn — B2B authority signal
  4. YouTube — AI training data heavily sourced from YouTube transcripts
  5. Twitter/X — real-time authority signal
  6. Crunchbase — for tech/startup companies
  7. GitHub — for developer products
  8. Industry directories — trade-specific platforms (Alibaba, Made-in-China, etc.)

If your company doesn't have a Wikipedia page, prioritize LinkedIn and YouTube presence — they are the strongest alternative signals.

Platform-Specific Tips

Google AI Overviews

  • Must rank in top 10 organic results first
  • Q&A format content is strongly preferred
  • Tables and lists get extracted most often

ChatGPT Search

  • Uses Bing index, not Google — optimize for Bing Webmaster Tools
  • Wikipedia presence dramatically increases citation probability
  • Entity Graph matters more than PageRank

Perplexity

  • Has its own crawler (PerplexityBot) — must be allowed
  • Strongly favors Reddit mentions and discussions
  • Original research and fresh content prioritized

Gemini

  • YouTube presence is the #1 signal (Google ecosystem)
  • Google Knowledge Panel helps significantly
  • Schema.org markup weighted heavily

Bing Copilot

  • Submit to IndexNow for faster indexing
  • LinkedIn presence matters (Microsoft ecosystem)
  • Bing Webmaster Tools verification recommended

llms.txt

llms.txt is an emerging standard (proposed by Jeremy Howard, 2024) that helps AI engines understand your site's structure. Think of it as robots.txt but for telling AI what's most important, not what to avoid.

The GEO functions auto-generate /llms.txt from your WordPress content. To customize, you can create a static llms.txt file in your web root instead.

Cloudflare Warning

Cloudflare's "Managed robots.txt" feature (Security → Bots) automatically blocks AI crawlers. You must disable this for GEO to work.

See 09-cloudflare.md for details.

Next Step

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