# What is AEO? How to Get ChatGPT, Perplexity & AI Search Engines to Cite Your Website — 2026 Guide > Source: > Published: 2026-05-26 06:30:09+00:00 Open ChatGPT. Ask it: "What's a good Threads automation tool?" It gives you an answer. But whose website does it cite? Not yours. Even if your product is the best on the market, even if your blog has the most detailed tutorials — if AI search engines can't parse your website structure, you don't exist. **That's the problem AEO solves.** | SEO | AEO | | |---|---|---| Goal | Rank high on Google search | Get cited as an answer by AI engines | Audience | Human searchers | ChatGPT, Perplexity, Gemini, Grok | Key Metrics | Rankings, CTR, traffic | Citation count, source attribution | Core Tech | Keywords, backlinks, page speed | Structured data, FAQ Schema, llms.txt | Content Format | Long-form, images, video | Direct answers, lists, definition patterns | Competition | Red ocean — everyone's doing it | Blue ocean — almost nobody's doing it | **Key point: AEO doesn't replace SEO — it's a layer on top.** Good SEO makes AEO even more effective. Traditional search: User searches → clicks your website → reads content AI search: User asks a question → AI gives the answer directly → **may or may not cite you** If AI doesn't cite you, the user doesn't even know your website exists. Almost nobody is doing AEO yet. Search for "AEO optimization" and most results are thin, generic content. The market is wide open. **Start now and you're among the earliest adopters.** Like people who started doing SEO in 2010. AI engines love structured Q&A. If your website has FAQPage JSON-LD schema, the probability of AI extracting your content as an answer increases dramatically. ``` { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [{ "@type": "Question", "name": "What is AEO?", "acceptedAnswer": { "@type": "Answer", "text": "AEO is Answer Engine Optimization — optimizing your website content so AI search engines like ChatGPT, Perplexity, and Gemini can directly cite your site as an answer source." } }] } ``` **Action item**: Wrap your website's FAQs in FAQPage schema. AI engines scan your `

` and `

` tags. If headings are in question format, AI is more likely to treat the following content as an answer. Bad: `Our Services` Good: `What services does Ultra Lab provide?` Bad: `Pricing Plans` Good: `How much does it cost to build a SaaS?` Bad: `Technical Architecture` Good: `How to build a SaaS with React and Firebase?` **Action item**: Rewrite your H2/H3 tags into What/How/Why question format. AI engines prefer sentences that can be directly extracted as definitions. Bad: `Regarding our diverse range of automation solutions, we offer a multifaceted approach...` Good: `AEO is Answer Engine Optimization, which makes AI search engines cite your website.` **Formula**: `[Noun] is [definition], [one-sentence value statement].` When AI sees this pattern, it extracts it directly as an answer. Beyond FAQ, these schemas also boost your AEO score: | Schema | Purpose | Priority | |---|---|---| FAQPage | Q&A content | Must-have | Article / BlogPosting | Article content | Must-have | BreadcrumbList | Navigation structure | Recommended | Organization | Brand entity | Recommended | HowTo | Tutorial steps | Bonus | WebSite | Basic site info | Baseline | **Action item**: Add at least FAQPage + Article + Organization schemas. `llms.txt` is an emerging standard ([llmstxt.org](https://llmstxt.org)) that tells AI crawlers what your website contains and which pages to read. ``` # Ultra Lab > AI Product Studio — LLM-powered automation infrastructure ## Products - [MindThread](https://mindthread.tw): Threads automation SaaS - [UltraProbe](https://ultralab.tw/probe): AI security scanner ## Blog - [What is AEO](https://ultralab.tw/en/blog/what-is-aeo-guide) - [AI Agent Token Optimization](https://ultralab.tw/en/blog/ai-agent-token-optimization) ``` Place it at `/llms.txt` in your website root. AI crawlers will automatically read it. Your `robots.txt` determines which AI bots can crawl your site: ``` # Welcome AI search engines User-agent: GPTBot Allow: / User-agent: PerplexityBot Allow: / User-agent: ClaudeBot Allow: / # Block training-only crawlers User-agent: Bytespider Disallow: / ``` **Key decision**: You want AI search engines to read your content (so they'll cite you), but you may want to block crawlers that only scrape for training data. When AI engines decide whether to cite you, they look for these signals: `` + JSON-LD author field`datePublished` and `dateModified` (AI prefers fresh content)`` + footer copyright**Action item**: Ensure every page has author, date, and rights meta tags. AI crawlers use HTML5 semantic tags to understand page structure: ``` php

Title

Content...

``` Bad: Everything wrapped in `
` → AI can't tell what's important Good: Using `
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