Your SEO dashboard shows rankings, clicks, and backlinks — and nothing about whether an AI assistant would ever cite you. You can run a keyword report in sixty seconds, but if someone asks ChatGPT "which product should I buy," you have no idea whether your site is even in the running. That's the gap an LLM SEO check closes. It's a quick, repeatable audit of how your site appears in AI-generated answers, and once you've run one, the fixes are surprisingly concrete.
Why Your SEO Reports Miss AI Search
Traditional SEO tools measure a world that AI search doesn't play in. A Google results page has ten blue links and a ranking for each; an AI answer has room for three to eight citations, often fewer. Rank trackers tell you where you sit on page one — they can't tell you whether a model considers your content quotable, reachable, or trustworthy enough to include.
Three mechanics explain why most sites with strong SEO are invisible to LLMs:
- Models cite extractable answers, not keyword-matched pages. A site ranking #1 in Google can lose a citation to a page three result that has a cleaner, self-contained 50–100 word answer to the exact question.
- Crawler access is binary. One robots.txt rule blocking GPTBot or ClaudeBot can remove your entire site from AI answers while leaving Google rankings untouched — and our audits since April 2026 show roughly 60% of sites block at least one AI crawler, usually by accident.
- Citations are a compounding game. Brand mentions across the web matter roughly 3x more than backlinks for AI citation decisions, and once a model starts citing a domain it tends to keep citing it.
The consequence: a healthy Google presence is no longer evidence of AI presence. You have to measure AI search directly, and that's exactly what an LLM SEO check does.
What an LLM SEO Check Measures
An LLM SEO check isn't a single "does ChatGPT mention you?" lookup. It scores your site across the six dimensions that decide AI citations — the same dimensions a full GEO audit uses — so you get a baseline you can track:
| Dimension | What it checks | Why it decides citations |
| Citability | Whether your passages are self-contained, quotable answers | LLMs lift extractable answer blocks, not whole pages |
| Crawler access | Whether GPTBot, ClaudeBot, PerplexityBot, and Google-Extended can reach you | A single robots.txt rule can make your site invisible to AI |
| Schema markup | Whether Article, FAQPage, and Organization structured data is present and valid | Structured entities are easier for models to parse and trust |
| Brand authority | How consistently and accurately your brand is mentioned across the web | Strong external presence gives models evidence to cite you |
| Platform presence | Your footprint on Reddit, YouTube, Wikipedia, and LinkedIn | LLMs heavily weight these platforms as trusted sources |
| Technical health | Page speed, indexability, rendering, and mobile experience | Slow or broken pages get dropped during answer construction |
Here's why the crawler dimension alone is worth the check: in a June 2026 GeoCheckr scan of 200 randomly sampled domains, roughly
34% blocked GPTBot in robots.txt. Most of those sites had no idea — their Google traffic was fine, and no standard SEO tool ever flagged it.
How to Run an LLM SEO Check in 15 Minutes
You don't need a data team or a paid enterprise platform. A practical LLM SEO check is five quick steps, each using a free checker:
Step 1: Verify AI crawler access (2 minutes). Run the AI crawler check on your homepage and your money pages. It tests your robots.txt against 14 AI crawlers including GPTBot, ClaudeBot, PerplexityBot, and Google-Extended. If any are blocked, unblock them before doing anything else — nothing downstream matters if the model never reads you.
Step 2: Validate your structured data (3 minutes). Paste a page URL into the schema checker to confirm your Article, Organization, and FAQPage markup parses correctly. Invalid or missing schema is one of the most common reasons models skip otherwise strong pages.
Step 3: Test citability on your highest-intent pages (3 minutes). Take the three pages that answer your customers' most-asked questions and run the citability check. It scores whether your passages are self-contained enough to quote. Pages that fail usually need a direct answer block at the top — 50–100 words that answer one question completely.
Step 4: Publish and check an llms.txt file (2 minutes). If you don't have one, create it and point AI crawlers at your best content first, then verify it with the llms.txt checker. It's the cheapest visibility win in GEO — see our guide to llms.txt for the format.
Step 5: Run the full LLM visibility check (5 minutes). Finally, run the free LLM visibility check on your homepage. It scores all six dimensions above and gives you a single number to track month over month — the same number our clients use as their AI-search baseline.
If you want the complete picture, follow up with a full GEO audit, which crawls your entire site and turns your weakest dimensions into a prioritized fix list.
Traditional SEO Check vs. LLM SEO Check
| Dimension | Traditional SEO check | LLM SEO check |
| Unit of measurement | Keyword rankings and clicks | AI citations and visibility score |
| What it checks | Indexing, backlinks, on-page relevance | Crawler access, schema, citability, brand authority |
| Frequency | Weekly or monthly rank tracking | Monthly baseline, biweekly for active campaigns |
| Blind spot | Invisible to AI answers entirely | Doesn't tell you Google rankings |
| Typical tool output | Position + CTR per keyword | Score across six GEO dimensions + fix list |
Neither replaces the other — a site needs Google rankings *and* AI citability. But if you're only running the left column, you're flying blind in the channel that's growing fastest.
Run Your First LLM SEO Check Today
An LLM SEO check takes fifteen minutes, costs nothing, and tells you one thing no rank tracker can: whether AI assistants can reach you, understand you, and safely cite you. The five steps above — crawler access, schema, citability, llms.txt, and a full visibility score — cover every dimension that decides citations, and each one comes with a free checker. Start with the LLM visibility check for your baseline, fix the crawler issues with the AI crawler check, and if you want the mechanics of winning individual citations, our guide to getting cited by ChatGPT walks through the rest.
