LLM SEO is the work of getting your business mentioned and cited in answers from large language models like ChatGPT, Gemini, Claude and Perplexity, and in Google AI Overviews. It is also called LLM optimization, GEO (Generative Engine Optimization) or AEO (Answer Engine Optimization). The goal is to be the source the AI quotes, not only a link on a results page.

Is LLM SEO different from regular SEO?

It builds on regular SEO rather than replacing it. AI tools that search the web lean on search indexes, so pages that rank well are more likely to be used. LLM SEO adds a focus on clear, quotable answers, a consistent brand identity across the web, and AI crawler access.

How do I rank in LLMs?

Let AI crawlers read your site, rank in normal search for the topic, put a direct answer at the top of each page, use specific facts and numbers, keep your business name and details identical everywhere, and get mentioned on other trusted sites. Then track whether AI answers mention you and fix the gaps.

Does llms.txt help with LLM SEO?

It is optional. llms.txt is a proposed file that lists your most important pages for AI tools. Google says you do not need any special AI text files to appear in AI Overviews or AI Mode. It is cheap to add, but treat it as a nice extra, not a ranking factor.

How long does LLM SEO take to work?

Tools that search the web live, like ChatGPT search and Perplexity, can pick up a new or improved page within days to weeks once it is crawled. Showing up in answers that come from a model's training data takes much longer, because that only changes when a new model is trained.

How do I check if ChatGPT or Gemini mentions my business?

Ask them the questions your customers ask, like "best dentist in Denver", and note who gets named. A free AI visibility checker can run these prompts across engines for you, and an AI visibility tracker repeats them over time so you see changes.

LLM SEO: What It Is and a 12-Step Checklist

The basics

What Is LLM SEO?

LLM SEO (also called LLM optimization) is the practice of getting your business mentioned and cited in answers from large language models such as ChatGPT, Gemini, Claude and Perplexity, plus Google AI Overviews. You do it by making your site easy for AI crawlers to read, writing clear answers they can quote, and building a consistent reputation across the web.

The names vary. Some call it GEO (Generative Engine Optimization), some AEO (Answer Engine Optimization), some "SEO for LLMs". They describe the same goal: when someone asks an AI tool for a recommendation in your field, your business is in the answer.

This page is the practical version. If you want the strategy and theory behind it, our complete guide to Generative Engine Optimization covers it in depth.

How it works

How LLMs Pick Their Sources

An AI tool can know about your business in two ways. Each needs a different kind of work.

Live web search

ChatGPT search, Perplexity, Gemini and AI Overviews search the web as you ask, then summarize the pages they find and often link to them. Changes to your site can show up within days or weeks.

Training data

When a model answers from memory, it draws on what it read during training. Being widely and consistently mentioned online is what gets you remembered. This changes slowly, with each new model.

For most small businesses, live search is where the quick wins are. Recommendations like "best plumber near me" usually trigger a web search, so the pages and listings you control have a direct effect.

Comparison

LLM SEO vs Traditional SEO

LLM SEO is not a replacement for SEO. It is SEO with a different finish line: instead of a click from a list of links, you want to be the source the answer is built from.

	Traditional SEO	LLM SEO
Goal	Rank high and win the click	Get named or cited in the answer
Unit	The whole page	Short passages a model can quote
Trust signals	Backlinks, relevance	Mentions and agreement across many sites
Crawlers	Googlebot, Bingbot	Plus OAI-SearchBot, PerplexityBot, ClaudeBot
Measured by	Rankings and clicks	Mentions, citations and share of answers

For a full side-by-side, read GEO vs SEO: what is the difference.

Do this

The 12-Step LLM SEO Checklist

Work top to bottom. The first four steps decide whether AI tools can see you at all. The rest decide whether they choose you.

1
Check where you stand today
Write down 10 questions your customers ask and put them to ChatGPT, Gemini and Perplexity. Note who gets named. The free AI visibility checker runs this for you.
2
Let AI crawlers in
Check robots.txt and your firewall or CDN bot settings. OpenAI uses OAI-SearchBot for ChatGPT search, ChatGPT-User for pages users ask about, and GPTBot for training. Blocking OAI-SearchBot keeps you out of ChatGPT search answers. Also allow PerplexityBot and ClaudeBot. Our ChatGPT guide has a copy-ready robots.txt.
3
Make pages readable without JavaScript
Many AI crawlers do not run JavaScript well. If your main text only appears after scripts load, they may see an empty page. Server-rendered HTML is the safe choice.
4
Rank in normal search
AI tools that search the web pull from pages that already rank. Google says pages only need to be indexed and eligible for a snippet to appear in AI Overviews, with no special optimization. Good SEO is the foundation.
5
Answer first
Put a direct, 2 to 3 sentence answer right under each heading. LLMs lift short passages that make sense on their own, so the first lines of a section matter most.
6
Be specific
Prices, numbers, dates, locations and named examples give a model something concrete to quote. "Most jobs cost $150 to $300" beats "affordable rates".
7
Use question-style headings
Phrase headings the way people ask, like "How much does a roof replacement cost?". It mirrors the prompts people type into AI tools.
8
Keep your brand identical everywhere
Same business name, description, address and phone on your site, Google Business Profile, LinkedIn and directories. Mixed details make it harder for a model to know you are one business.
9
Add structured data
Organization or LocalBusiness, Article and FAQ schema spell out who you are and what a page covers. Google says no special schema is required for AI features, so treat it as clarity, not a shortcut. Templates are in our schema for AI guide.
10
Get mentioned on other sites
LLMs trust what several independent sources agree on. Reviews, industry directories, "best of" lists, local news and genuine forum answers all count.
11
Keep key pages fresh
Update important pages when facts change and show the date. Stale prices and old screenshots give a model a reason to quote someone else.
12
Add llms.txt, then track results
An llms.txt file is optional and quick with the llms.txt generator. Then track mentions over time with an AI visibility tracker, because AI answers change week to week.

Want each step explained with examples? Our guide to improving AI visibility walks through the highest-impact fixes one by one.

Avoid

Common LLM SEO Mistakes

Blocking AI bots by accident. A CDN or security plugin setting can block AI crawlers even when robots.txt allows them. Test, do not assume.
Dropping normal SEO. If you do not rank in search, AI tools that search the web are unlikely to find you either.
Chasing tricks. Hidden text aimed at AI, fake reviews and keyword-stuffed pages can backfire and break search engine policies.
Burying the answer. Long intros before the point give a model nothing to quote.
Checking once. AI answers shift often. One test tells you little. Track the same questions monthly.

Next reads

Go Deeper

Each of these takes one part of LLM SEO further.

How to Get ChatGPT to Recommend You

How ChatGPT picks businesses, its crawlers, and the exact steps to get into its answers.

How to Improve AI Visibility

Seven steps, ordered by impact, to get cited by ChatGPT and Google AI.

GEO vs SEO

Where generative engine optimization and SEO differ, overlap, and why you need both.

Generative Engine Optimization

The full strategy guide behind everything on this page.

AI Visibility Checker

Free scan to see if ChatGPT, Gemini, Perplexity and AI Overviews mention you.

llms.txt Generator

Build an llms.txt file for your site in under a minute.

LLM SEO: What It Is and How to Do It

What Is LLM SEO?

How LLMs Pick Their Sources

Live web search

Training data

LLM SEO vs Traditional SEO

The 12-Step LLM SEO Checklist

Check where you stand today

Let AI crawlers in

Make pages readable without JavaScript

Rank in normal search

Answer first

Be specific

Use question-style headings

Keep your brand identical everywhere

Add structured data

Get mentioned on other sites

Keep key pages fresh

Add llms.txt, then track results