LLM SEO Optimization Techniques: (including llms.txt)

Table of Contents

1. How to Make Your Content Visible in the Age of AI Search
2. What Are LLMs and Why Should You Care?
3. The New Way of Searching
4. SEO vs. GEO vs. AEO vs. LLMO: Are We Just Rebranding SEO?
5. Key LLM SEO Optimization Techniques
   • The Bar Has Been Raised on the Quality of Content
   • Use Structure, Chunked Formatting
   • Be Factual, Transparent, and Authoritative
   • Optimize for Summarization
   • Use Schema
6. Bonus Strategies for LLM Optimization
   • Use Explicit Context and Clear Language
   • Leverage FAQs and Conversational Formats
   • Enhance Trust with Freshness Signals
   • Prioritize Author Visibility and Credibility
   • Use Internal Linking Strategically
7. The Role of llms.txt: Giving AI Search All the Right Signals
8. LLM Optimization vs. Traditional SEO
9. Common Mistakes to Avoid
10. Tools and Resources to Get Started
11. Conclusion

How to make your content visible in the age of AI search 

If, on the other hand, you are a content strategist or SEO enthusiast, LLM optimization will mean something completely different to you and that is making sure that your content shows up in AI-generated search results. And, that needs to be true no matter whether you’re talking to ChatGPT, searching with Perplexity, or scanning Google’s new AI Mode for answers. Some call this ChatGPT SEO or Generative Engine Optimization. 

So, if you fall into the latter of those two groups, ie: the people who want their content and product pages to be seen and clicked, then this article is for you. And, if you’d like to read on, we’ll show you why LLM optimization in an AI-search landscape isn’t some sort of luxury option; it’s an absolute necessity. 

What are LLMs and why should you care? 

AI engineers train Large Language models on huge amounts of text and data to generate answers, summaries, code, and human-like language. They’ve read everything (not just the Classics) and that includes blogs, news articles and your website.   

The reason that’s important is that LLMs don’t crawl your website in real time like Search Engines do. What they do is read it, learn from it and when someone asks them a question, they try to recall what they saw and rephrase it into an answer. If your site shows up as the answer, “Great” but if not, you’ve got a visibility problem. 

The new way of searching 

Search is not just about Google anymore. Also, it’s not as if just one other thing has come to dominate which means we’re left with a rather messy mix of Perplexity answers, Chat GPT chats, Gemini summaries and voice assistants reading out answers while we try to do two tasks at once. 

In short, people aren’t just searching, they’re conversing and if your content can’t hold its own in this environment then you’re missing out on visibility, traffic, and the ability to build trust.  We’ll walk you through exactly how to fix that.   

Read more: How to optimize content for AI LLM comprehension using Yoast’s tools 

SEO vs. GEO vs. AEO vs. LLMO: Are we just rebranding SEO? 

If you’ve been wondering whether you now need four different strategies for SEO (Search Engine Optimization), GEO (Generative Engine Optimization), AEO (Answer Engine Optimization), and LLMO (Large Language Model Optimization), relax, it’s not as big a deal as you might think. You see, despite all the buzzwords, the core of optimization hasn’t changed much. 

All four terms point to the same central goal: making your content more findable, quotable, and credible in machine-generated output regardless of whether that comes from Google’s AI Overviews, ChatGPT, or an answer box on Bing. 

So, should you overhaul your entire content strategy to ‘do LLMO’? 

Not really. At least, not yet. 

Most of what boosts your presence in LLMs is already what SEO professionals have been doing for years. Structured content, semantic clarity, topical authority, entity association, clean internal linking, it’s all classic SEO.  

Where they slightly diverge: 

• Focus more on entity mentions, not just links 
• Treat your core site pages (home, pricing, about) and PDFs as important LLM fuel.
• Remember that AI crawlers don’t render JavaScript, so client-side content might be invisible   
• Think about how LLMs process structure (chunking, context, citations), not just how humans skim it 

So, if you’ve already been investing in foundational SEO, you’re already doing most of what GEO, AEO, and LLMO ae all about. That’s why not every new acronym needs you to have a whole rethink on your efforts. Sometimes, it’s just like SEO. 

Key LLM SEO optimization techniques 

Now that we know LLMs aren’t crawling our site but are understanding it, we need to think a little differently about how we create and construct content and for more on this, you may find this article extremely insightful. This is not about cramming in keywords or trying to play the algorithm, it’s about clarity, structure and credibility because these are the things LLMs care about when deciding what to quote, summarize or ignore. Below are some techniques that will help your content stay visible now that people are using generative search.   

The bar has been raised on the quality of content  

LLMs love clarity. The more natural and specific your language is, the easier it is for them to understand and reuse your content. That means not using jargon, avoiding ambiguity and instead, focusing on writing like you’re explaining something to a colleague. 

To give an exact example: 

Don’t Say: 

“Our innovative tool revolutionizes the digital landscape for modern businesses.” 

Instead Say: 

“The Yoast SEO plugin for WordPress helps businesses to improve their website’s visibility and appear inn search results 

Use Structure, Chunked Formatting

Chunked formatting means breaking your content into small pieces (chunks) of informatin that are easy to understand and remember. LLMs tend to prioritize the most easily digestible content construction – which means your headings, bullet points, and clearly defined sections must do a lot of heavy lifting. Not only does organizing your content like this help people to skim read, but it also helps machines understand what each section is about.  

Structuring your content like this will help: 

• Write clear, descriptive H2s and 3s 
• Use bullet points that can provide standalone value 
• Include summaries and tables to give quick overviews 

Be Factual, Transparent, and Authoritative 

Just like Google, LLMs need to trust that your content is reliable before they start taking you seriously. This means you need to show your working out, quote sources, reveal authors, and follow the principles of E-E-A-T. Experience, Expertise, Authority, and Trust. 

Follow these E-E-A-T principles 

To do this: 

• Include an author bio and credentials if possible (include a link to actual author bios and social profiles) 
• Name your sources when you use claims or statistics 
• Share real experiences if possible “As a small business owner…” 

The more real, relatable and trustworthy your content looks, the more AI will like it.  

Optimize for Summarization 

LLMs won’t quote your entire blog post; they’ll only use snippets. Your job is to make those snippets irresistible. Start with strong lead sentences so that each paragraph begins with a clear point followed by context. Also, it’s a good idea to front-load your content. Don’t save your best bits for the end.  

As a reminder: 

• Start each section with what you want the key takeaway to be 
• Keep paragraphs short and self-contained 
• Create standalone summary paragraphs as these often get quoted in AI generated answers 

Use Schema 

Behind every great summary is a structured content model. That’s where Schema markup comes in and to help the AI understand your content, you need to speak in a certain way.   

Read more about schema markup 

To make things clear, use: 

• Article for blog content 
• FAQPage for questions and answers 
• HowTo for instructions 
• Author and Person for writer’s bio
• WebPage for generic content 

Bonus strategies for LLM optimization

Once you’ve got the basics completed, like clear writing, structure and trust signals, there’s still more you can do to give your content the best shot at visibility. These bonus strategies focus on how to make your site even more AI-friendly by anticipating how LLMs interpret and reuse information. 

Use Explicit Context and Clear language 

Humans have an incredible ability to be able to ‘fill in the blanks’ and still ‘get the message’ even if the information they got was vague or unclear. One of the biggest differences between humans and LLMs? Humans can infer meaning from vague references. LLMs on the other hand… well, let’s just say that it doesn’t come naturally to them. 

In any case, the point is that if your article mentions “this tool” or “our product” without any context, an LLM might miss the connection entirely. The result? You’re left out of the answer, even if you’re the best source. 

So, to give your content the clarity it deserves: 

• Use the full product or brand name, like “Yoast SEO plugin for WordPress,” not just “Yoast” 
• Define technical or niche terms before using them 
• Avoid vague language (“this page,” “the above section,” “click here”) 

You don’t need to be repetitive, but you do need to be explicit rather than implicit.  

Leverage FAQs and Conversational Formats 

LLMs love FAQs because they’re direct, predictable, and easy to quote. They closely match real user intent and provide high-value snippets that tools like Perplexity and Gemini can pull from without much guesswork. 

How to use the FAQ block in WordPress 

That said, there’s an important limitation to keep in mind if you’re using the Yoast SEO FAQ block in Gutenberg: 

You cannot use H2 or H3 heading tags inside the FAQ block. 
The block creates its own question-answer formatting using custom HTML, which is great for structured data (FAQ Page schema), but it doesn’t support native heading tags which limits your ability to optimize AI readability and skimmability. 

So, if your goal is to appear in AI-generated summaries or answer boxes, where headings like “What is LLM SEO?” make it easy for AI to quote your content, you might be better off using manual formatting. 

Here’s how to get the best of both worlds: 

• STEP 1: Use H2 or H3 tags for each question (e.g., “What is llms.txt?”) and write a clear, short answer beneath it. This improves LLM visibility but doesn’t generate structured FAQ schema. 

• Step 2: Use the Yoast FAQ block for schema support but know that it won’t give you a proper heading structure. 

 Ultimately, the more your FAQs resemble natural, searchable questions — and are structured in a way that both humans and AI can easily parse — the more likely they are to be featured in answers. 

Enhance Trust with Freshness Signals  

Just like search engines, some LLMs give preference to newer content, but remember that we need to talk to them in a certain way to get the best out of them. 

Older content can be overlooked. Worse, it can be quoted incorrectly if something has changed since you last hit publish. 

Make sure your pages include: 

• A clear “last updated” timestamp (can we get a picture of what one would look like for clarification?) 
• Regular reviews for accuracy 
• Changelogs or update notes if applicable (especially for software or plugin content) 

It doesn’t have to be complicated, even a simple “Last updated: June 2025” can help both readers and AI systems trust that your content is current.  

How to keep content fresh 

Prioritize Author Visibility and Credibility 

Today, we’re entering a phase where who wrote your content is just as important as what it says. That means you need to highlight author visibility and put effort into signaling real-world experience. 

Here’s how: 

• Include author bios in WordPress with credentials and links to their professional profiles 
• Use Person schema to formally associate the content with a specific individual 
• Weave in relevant experience (“As an SEO consultant who works with SaaS brands…”) 

Remember, LLMs are more likely to trust, quote, and amplify expert-authored content. 

Use Internal Linking Strategically 

Think of internal linking as your site’s nervous system. It helps both humans and LLMs understand what’s important, how topics relate, and where to go next. 

But internal linking isn’t just about SEO hygiene anymore — it’s also a way to establish topic authority and help LLMs build a map of your expertise. 

Do: 

• Cluster related articles together (e.g., link from “LLM Optimization” to “Schema Markup for SEO”) 
• Use descriptive anchor text like “read our full guide to Schema markup,” not just “click here” 
• Ensure every piece of content supports a broader narrative 

Our internal linking feature is available for free with a Yoast SEO Premium plugin. 

The role of llms.txt. Giving AI search all the right signals 

Now let’s talk about one of the most recent developments in LLM visibility; a little file called llms.txt. 

Think of it as a sibling to robots.txt, but instead of guiding search engines, it tells AI tools how they’re allowed to interact with your content. Note: llms.txt is still an evolving standard, and support across AI tools may vary, but it’s a smart step toward asserting control 

With llms.txt, you can: 

• Define how your content may be reused or summarized 
• Set clear expectations around attribution, licensing 

It’s not just about protection, it’s about being proactive as AI usage accelerates. 

Even better: Yoast now offers llms.txt integration right inside the plugin, so you don’t need to mess around with code or server settings. If you want to future-proof your site’s visibility (and your IP), this is where you start. 

The llms.txt feature is available for both free and premium customers.   

LLM Optimization vs Traditional SEO: 

LLM Optimization and SEO are part of the same family, but they serve different functions and require slightly different thinking. 

Let’s compare: 

The takeaway? You can’t ignore either. One brings traffic; the other boosts brand visibility within AI responses. 

And considering that 42% of users now start their research with an LLM (not Google), you’ll want to be found in both places. 

Common Mistakes to Avoid 

Even well-meaning content creators fall into holes. So, take a look at the tips below to avoid any mishaps that could damage your LLM visibility: 

• Writing like a robot or allowing a robot to write for you (ironically, not appreciated by robots) 
• Leaving your content undated and unchanged for years 
• Publishing posts without any author information or editorial standards 
• Ignoring internal links or leaving orphaned pages 
• Using vague headings or anchor text like “read more” or “this article” 

If your content looks generic, outdated, or anonymous, it won’t earn any trust. And, without trust, it won’t get quoted. 

 Tools and Resources to Get Started 

• Yoast SEO plugin – for structured content, schema, and SEO basics 
• llms.txt integration – for controlling how AI uses your content 
• Schema support  – for adding machine-readable clarity
• LLM Optimization guide – for the essentials 

Search used to be about visibility within SERPs. But now, it’s also about being seen in summaries, answers, snippets, and chats. LLMs aren’t just shaping the future of search; they’re shaping how your brand is perceived to both humans and robots alike. 

To stand out: 

• Write with clarity and context 
• Structure for humans and machines 
• Cite your expertise and show your authors 
• Use tools like Yoast and llms.txt to signal your intent 

Future-proof your visibility with Yoast SEO. From llms.txt integration to schema support, Yoast gives you all the tools you need to speak AI’s language and dominate both generative answers and search engines. Get started with Yoast SEO Premium now and make it easy for AI to say something accurate, useful, and… ideally, about you.