# Generative engine optimization (GEO)

Generative engine optimization, GEO, means being named and cited in answers written by AI assistants. Think ChatGPT with search, Perplexity, Google AI Overviews and AI Mode, Claude, Gemini, and Microsoft Copilot. You optimise to be quoted, not just ranked.

Updated 2026-09-13 · Source: https://porteur.ai/glossary/generative-engine-optimization

## What it means for a small site

GEO is the practice of getting your page cited as a source in AI answers. There is no submission form. Assistants fetch from web indexes and pick pages that answer the question directly.

For a small site, GEO is a route to discovery without owning the whole results page. A single citation can put your brand in front of buyers who never click.

It differs from SEO. SEO aims to rank and win the click. GEO aims to be named inside the answer. You still need SEO for traffic and revenue tracking.

## How to read and measure GEO

Measure GEO by asking assistants the questions your buyers ask, then reading who is named. Repeat for ten to twenty core queries, weekly or monthly.

- List your buyer queries: “best payroll for startups”, “how to migrate from X to Y”, “pricing page examples”.
- Ask ChatGPT with search, Perplexity, Copilot, Gemini, and Google AI Overviews, as of 2026 those show sources.
- Record which pages are cited, where you appear, and which rivals recur.
- Note the formats assistants choose: lists, comparisons, step-by-steps, figures, and consistent product and person names.

A good result is your brand named with a link. A better result is your comparison page quoted with a figure the answer repeats.

## What to do to be cited

- Write pages that answer the exact question in plain terms: lists, pros and cons, steps, specs, and prices if you publish them.
- Keep names consistent: your product, plan names, people, and company. assistants look for exact matches.
- Use clear structure: h2 sections, bullet lists, comparison tables, and short summaries.
- Quote figures assistants can lift: limits, counts, integrations, version numbers, dates, and example queries in quotes.
- Publish comparison and alternatives pages that include you and competitors you actually replace.
- Get onto existing roundups already cited. Look at the cited sources, ask for inclusion, or publish a better, cleaner version that those pages may cite.
- Let answering crawlers fetch your pages. Check robots.txt and server rules on both www and bare domains.

Example: your /alternatives/yourproduct page adds a table of 8 tools, pricing, and who each is for. Perplexity starts citing it on “yourproduct alternatives”. Before, you were not named. After, your brand appears in the first screen with a link.

## Crawlers to allow and why

> Blocking answering and search crawlers makes you invisible to assistants. Allow them unless you have a legal reason not to.

| Vendor or bot | Purpose as of 2026 | Blocking effect |
| --- | --- | --- |
| Googlebot | Google Search and pages cited by AI Overviews | Removes you from Search and AI Overviews sourcing |
| Bingbot | Bing Search and Microsoft Copilot | Removes you from Bing and Copilot sourcing |
| OAI-SearchBot | Indexing for ChatGPT search results | Hides you from ChatGPT sourced answers |
| ChatGPT-User | Fetches a page on user request | May break on-demand fetching of your page |
| Claude-SearchBot | Indexing for Claude search answers | Hides you from Claude sourced answers |
| Claude-User | Fetches on user request | May break on-demand fetching of your page |
| PerplexityBot | Perplexity index | Hides you from Perplexity citations |
| Perplexity-User | On-demand fetch | May block real-time fetching |
| Applebot | Siri and Spotlight | Limits Apple surfaces |
| Applebot-Extended | Control for Apple Intelligence training | Training only, not answer visibility |
| Google-Extended | Control for Gemini training and grounding | Training only, not Search ranking or Overviews |
| GPTBot | Model training crawl | Training only |
| ClaudeBot | Training and model improvement | Training only |
| CCBot | Common Crawl corpus | Training only |
| meta-externalagent, meta-externalfetcher | Meta training and fetcher | Training only |
| Amazonbot, cohere-ai, Bytespider, DuckAssistBot | Vendor-specific uses | Usually training or assistant features |

Robots.txt is voluntary. Blocking training crawlers does not remove pages already collected. If you must block training, keep OAI-SearchBot, Claude-SearchBot, PerplexityBot, Bingbot, and Googlebot allowed for GEO visibility.

## Traps and limits

- Chasing clicks only. GEO value is brand mention and assisted demand, which analytics may not attribute.
- Thin programmatic pages. Assistants prefer clear, specific pages, not spun templates.
- Inconsistent naming. One page says Starter, another says Basic. Assistants split your mentions.
- No source hygiene. If your page misstates a figure, you lose trust and future citations.
- Blocking by mistake. A stray Disallow on OAI-SearchBot or PerplexityBot makes you vanish from answers.
- Expecting a submission form. There is none. Assistants choose from indexes and existing roundups.

## Questions

### What's the difference between SEO and GEO?

SEO tries to rank and win clicks from search results. GEO tries to be named and cited inside AI answers. You often need both: SEO for traffic, GEO for brand presence and assisted discovery.

### Is GEO replacing SEO?

No. As of 2026, assistants cite and Search still drives large volumes. Treat GEO as an extra channel. Keep shipping pages that can rank and that assistants can cite.

### How do I measure GEO impact?

Track citations. Ask assistants your buyer queries, note where you are named, and log changes over time. Then watch branded search and direct signups for movement after big citation wins.

### Which bots should I allow for GEO?

Allow Googlebot, Bingbot, OAI-SearchBot, Claude-SearchBot, PerplexityBot, and the on-demand user agents. Blocking training crawlers is separate and does not remove data already collected.

### How do I get cited by AI answers?

Answer the exact question with structure, figures, and consistent names. Publish comparisons and alternatives. Get listed on roundups the assistants already cite. Check robots.txt for access.

### What does GEO stand for in this context?

GEO stands for generative engine optimization. It is the practice of being named and cited by assistants like ChatGPT with search, Perplexity, Google AI Overviews, Claude, Gemini, and Copilot.

## Read next

- [Generative engine optimization (GEO): how to be named by AI answers](https://porteur.ai/guides/generative-engine-optimization): How to get your site named in AI answers: sources, crawlers, lists, structure, llms.txt, comparisons, and how to measure by asking assistants.
- [How to appear in Google’s AI Overviews](https://porteur.ai/guides/how-to-rank-in-ai-overviews): What overviews cite, which queries trigger them, and how to structure pages that get linked. Steps to find your openings and measure them.
- [robots.txt for AI crawlers: GPTBot, ClaudeBot, PerplexityBot and what to allow](https://porteur.ai/guides/robots-txt-for-ai-crawlers): Decide which AI crawlers to allow in robots.txt, why it matters, and copy‑paste examples for GPTBot, ClaudeBot, PerplexityBot, Google‑Extended and more.
- [llms.txt: what it is, examples, and how to write yours](https://porteur.ai/guides/llms-txt): llms.txt is a Markdown file at /llms.txt that maps your site for language models. See the format, a worked example, and write yours in twenty minutes.
- [AI Overview](https://porteur.ai/glossary/ai-overview): AI Overviews are Google’s generated answers above results. See when they appear, what they cite, how to measure impact, and how to get cited.
- [GEO tools: what they measure and what you can check yourself](https://porteur.ai/guides/geo-tools): What GEO tools really measure, how they sample prompts, and a simple monthly method to track AI answers yourself and act when rivals win.

Drop your URL to see which assistant surfaces cite rivals for your queries, and what your site needs to be cited, in about thirty seconds, free. Free check: https://porteur.ai/