AI Search
LLM SEO: What It Means and What Actually Helps
“LLM SEO” is a new label for an old goal: being the source a system chooses to show.
LLM SEO usually means improving how a business appears in answers from tools built on large language models, such as ChatGPT search, Gemini, Copilot, Perplexity and Google’s AI features. It overlaps heavily with what others call GEO or AEO.
These tools differ, but the ones that search the web still need to find, read and trust your pages.
Short answer: LLM SEO means helping AI tools built on large language models find, understand and cite your business. In practice: allow the search crawlers those tools use, keep pages indexed and readable as text, answer questions clearly with specific facts, keep business information consistent across the web, and earn genuine mentions. Google says its AI features need no special optimization beyond normal SEO; there’s no secret LLM markup.
Key Takeaways
- LLM SEO, GEO and AEO describe overlapping work.
- Search-enabled AI tools need crawler access to your pages.
- Clear, specific, well-sourced answers are easier to cite.
- Consistent facts reduce wrong answers.
- No special markup or file is required for Google’s AI features.
Two ways LLM tools know about you
| Route | What it means | What you can do |
|---|---|---|
| Training data | What the model learned before release | Limited; long-term reputation and accurate public information |
| Live search / retrieval | Pages fetched to answer a question now | Crawler access, indexable pages, clear answers (AI crawlers) |
What research suggests
The academic paper that introduced the term GEO (Aggarwal et al.) reported that content changes could boost visibility in generative engine responses on its benchmark, and that how well each strategy worked varied by domain. Treat that as evidence that clear, well-supported content matters, not as a formula. See what is GEO.
Practical steps
- Check crawler access and indexing (AI visibility checklist).
- Rewrite key pages answer-first (citable content).
- Make entity facts consistent (entity SEO).
- Measure referrals and prompt checks (measuring AI visibility).
Frequently asked questions
Is LLM SEO different from GEO?
They’re largely the same idea with different names.
Can I get into ChatGPT’s training data?
Not on request. Public, accurate, widely referenced information is what tends to persist.
Do I need an llms.txt file?
Google says no AI text files are needed for its AI features. See llms.txt explained.
Want your content ready for AI search?
We review how your pages, entities and structured data hold up in AI-powered search, and fix the SEO foundations those features rely on.
Sources
- Google Search Central: AI features and your website
- Aggarwal et al., GEO: Generative Engine Optimization (arXiv 2311.09735)
- OpenAI: Overview of OpenAI crawlers
Last reviewed October 14, 2026.
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