What is GEO? A plain-language guide to generative engine optimization

Search is changing faster than most marketers are prepared for. The question isn’t whether people are using AI to find products and services, it’s what happens to your brand when they do.

GEO, or generative engine optimization, is the discipline of making sure your brand shows up when AI tools answer questions in your category. This guide covers what it is, how it differs from SEO, and what it actually takes to do it well.

How LLMs decide what to cite

When someone asks ChatGPT for the best project management software for agencies, the model doesn’t run a search. It generates an answer from what it learned during training, supplemented in some cases by real-time retrieval. That training data came from a specific set of sources: websites, Reddit threads, YouTube transcripts, review platforms, documentation, academic papers, and news articles.

The model’s answer reflects what was written about your brand in those places. If you had strong Reddit threads, solid G2 reviews, and editorial coverage from publications the model trusts, you’re more likely to get cited. If you didn’t, you probably won’t come up.

This is why GEO is a distinct discipline from SEO. Your Google ranking doesn’t translate directly into LLM citations. The sources that carry weight with search engines and the sources that carry weight with language models overlap partially, but not completely.

What makes a brand citeable

Based on our work tracking citations for clients, a few factors consistently correlate with higher citation rates:

Third-party validation. Reviews on G2, Capterra, and Trustpilot. Mentions in industry publications. Coverage in places that have editorial credibility. LLMs weight these heavily because they represent what other people have said about you, not what you’ve said about yourself.

Reddit presence. Reddit is among the most cited sources in LLM training data. A genuine, helpful presence in subreddits relevant to your space has an outsized impact on citation rates.

YouTube transcripts. Video content gets indexed, and transcripts contribute to training data. If you’re answering the questions your customers are asking, in video form, you’re contributing to your own citability.

Well-structured editorial content. Long-form content that clearly answers questions, uses proper heading structure, and has earned backlinks from credible sources performs well in LLM retrieval systems.

How GEO differs from SEO

SEO is primarily about ranking. You optimize for keywords, earn links, and improve technical health to move up in search results. The feedback loop is relatively direct: rank higher, get more clicks.

GEO is about representation. The outcome you’re optimizing for is being mentioned or recommended in an AI response, which doesn’t produce a click in the same way. It produces a recommendation. Someone asks an AI what to use, the AI names your product, and the person either searches for you directly or converts.

The measurement is different too. You can’t check a citation rate the way you check a keyword ranking. It requires actually querying the LLMs with the prompts your customers are likely to use and tracking what comes back.

What a GEO program looks like

A real GEO program has a few components working together:

1. Tracking setup. Identify the high-intent prompts in your category and monitor them regularly across the major LLMs. This is your baseline and your ongoing measurement.

2. Content strategy. Map the topics driving citations in your space. Build a publishing roadmap around those topics, prioritized by citation gap and business value.

3. Third-party presence. Get your brand represented in the places LLMs trust. Review profiles, Reddit, YouTube, press coverage, and industry publications.

4. Automation. Publishing at the volume GEO requires is difficult without automation. Building a content engine that maintains your brand voice at scale is part of what makes this sustainable.

The brands that will do well in AI-driven discovery are the ones building these programs now, while most of their competitors are still treating GEO as a footnote to their SEO strategy.

If you’re trying to figure out where to start, get in touch. We’ll tell you honestly where GEO fits for your brand.