GEO: The Complete Guide to Getting Cited by ChatGPT in 2025

What is GEO?

GEO (Generative Engine Optimization) is the practice of optimizing content to appear in AI-generated responses rather than traditional search results.

Unlike SEO which targets Google's 10 blue links, GEO targets citations in responses from ChatGPT, Claude, Perplexity, and Google AI Overviews.

Why GEO Matters in 2025

In 2025, the search landscape has fundamentally changed. Over 30% of informational searches now go through AI interfaces.

“GEO is not an evolution of SEO, it's a revolution in how content is discovered and consumed.”

“Companies that ignore GEO today will be invisible tomorrow. LLMs are becoming the new entry point for brand discovery.”

Key point: LLMs cite on average only 2 to 7 domains per response, compared to 10 blue links on Google.

The 7 GEO Ranking Factors

Our analysis shows that LLMs evaluate sources based on 7 main factors:

1. Schema Markup - JSON-LD structured data
2. E-E-A-T - Experience, Expertise, Authoritativeness, Trustworthiness
3. Crawler Accessibility - robots.txt, llms.txt
4. Content Structure - Headings, lists, tables
5. Citations and Sources - Credible external links
6. Entity Recognition - Consistent brand mentions
7. Technical Performance - HTTPS, mobile, vitesse

How to Implement Schema Markup

Schema markup is the foundation of GEO. Here are the essential types to implement:

Organization Schema

Identifies your brand to LLMs with name, logo, description, and social links.

{
  "@context": "https://schema.org",
  "@type": "Organization",
  "name": "Company Name",
  "url": "https://exemple.com",
  "logo": "https://exemple.com/logo.png",
  "description": "Company description...",
  "sameAs": [
    "https://linkedin.com/company/exemple",
    "https://twitter.com/exemple"
  ]
}

Article Schema

Structures your editorial content with author, dates, and categories.

FAQPage Schema

Ideal for frequently asked questions - directly extractable by LLMs.

{
  "@context": "https://schema.org",
  "@type": "FAQPage",
  "mainEntity": [{
    "@type": "Question",
    "name": "What is GEO?",
    "acceptedAnswer": {
      "@type": "Answer",
      "text": "GEO (Generative Engine Optimization) is..."
    }
  }]
}

Case Study: +65% Citations in 3 Months

One of our B2B SaaS clients saw their AI citations increase by 65% in 3 months thanks to our complete GEO approach.

Actions taken

• Complete Schema markup implementation (Organization, Article, FAQ)
• Creation of llms.txt file
• Page restructuring with optimized headings
• Addition of E-E-A-T sections (authors, sources, dates)

Results

• +65% citations in ChatGPT
• +40% AI organic traffic
• +25% qualified leads