What's the difference between SEO, GEO, AEO, and AIO?
SEO wins classic rankings and the index everything is built on. GEO gets you cited inside generative answers like Google's AI Overviews. AEO wins the single direct answer, featured snippets, voice, People Also Ask. AIO is your visibility inside standalone assistants like ChatGPT, Perplexity, Gemini, and Copilot. GAAS scores all four in one scan because in 2026 they're four layers of the same job: being found, trusted, and cited.
Is the free scan actually free, or is it a trial?
Genuinely free. No signup, no credit card, no scan limit. You get the composite score, all four pillar grades, the crawler matrix, schema coverage, and your prioritized issues every time. The paid tier, The Press, $5/month, is only for generating the content that fixes those issues.
Can GAAS guarantee I'll get cited by ChatGPT or appear in AI Overviews?
No, and we won't pretend otherwise. No tool can guarantee citations, citation algorithms are opaque and changing. What we can do is measure whether AI engines can find, access, parse, and trust your content, and generate content shaped the way cited sources are shaped. We optimize for eligibility and quality, not a fake promise.
What does the $5/month Press tier actually generate?
Answer-shaped content built to be quoted: 40–60 word snippet-ready answer blocks, question-phrased H2s mapped to real queries, and valid schema like FAQPage, Article, and Organization JSON-LD you can paste straight in. Every prioritized issue from your scan gets a one-click "Generate the fix", diagnosis plus the actual writing, for the price of a coffee.
Does schema markup or an llms.txt file guarantee AI citations?
Schema helps clarity and eligibility, it makes your entities and authorship legible, but it's not a magic citation button; Ahrefs tracked pages adding schema and found citations barely moved for pages already cited. llms.txt is a forward-looking community proposal that major LLM crawlers don't read yet. We report both honestly because accuracy is the whole point.
How is GAAS different from Ahrefs, Semrush, or Moz?
Those tools were built to win blue-link rankings in a 10-blue-links world. But 68% of U.S. searches now end with zero clicks, so ranking #1 increasingly means winning a result nobody clicks. GAAS measures whether AI can find, trust, and cite you across every platform, and then writes the fix. Legacy tools diagnose rankings and stop.
Which AI crawlers does the scan check?
We check access for the crawlers that feed today's AI surfaces: GPTBot and OAI-SearchBot (ChatGPT), PerplexityBot, Claude-SearchBot, Google-Extended (AI Overviews and Gemini), and Bingbot (which feeds Microsoft Copilot). The crawler matrix shows you exactly which are allowed and which are blocked in your robots.txt, a common, silent visibility killer.