{"industry":{"id":"70ea3802-1fc6-4fd7-a505-140d38d1c74a","slug":"digital-marketing","label":"Digital Marketing","description":"SEO, content, demand gen, and growth marketing"},"topic":{"slug":"answer-engine-optimization","label":"Answer Engine Optimization","description":"How B2B teams get content selected and cited by AI answer engines.","schemaKind":null},"answer":{"id":"d1dd851d-09dd-43e4-b1d6-15ca5cc72b5d","slug":"how-does-answer-engine-optimization-work","question":"How does answer engine optimization actually work?","answerMarkdown":"Answer engine optimization works on the search step that sits behind many AI answers. When an engine such as ChatGPT search or Google's AI Mode searches the web to answer a question, it reads the pages it retrieves and writes a response that cites some of them. AEO is the work of making your pages available to that search and making sure they hold something worth citing. That work makes a page a candidate. The engine still chooses which candidates it cites, and meeting an engine's published conditions is no guarantee of a citation.","answerText":"Answer engine optimization works on the search step that sits behind many AI answers. When an engine such as ChatGPT search or Google's AI Mode searches the web to answer a question, it reads the pages it retrieves and writes a response that cites some of them. AEO is the work of making your pages available to that search and making sure they hold something worth citing. That work makes a page a candidate. The engine still chooses which candidates it cites, and meeting an engine's published conditions is no guarantee of a citation.","answerHtml":"<p>Answer engine optimization works on the search step that sits behind many AI answers. When an engine such as ChatGPT search or Google&#39;s AI Mode searches the web to answer a question, it reads the pages it retrieves and writes a response that cites some of them. AEO is the work of making your pages available to that search and making sure they hold something worth citing. That work makes a page a candidate. The engine still chooses which candidates it cites, and meeting an engine&#39;s published conditions is no guarantee of a citation.</p>\n","summary":"Answer engine optimization works on the search step behind many AI answers. A search-backed engine runs its own queries, reads the pages it retrieves and cites some of them. AEO works on access to your pages and the evidence on them, which makes a page a candidate without guaranteeing a citation.","publishedAt":"2026-05-11T20:58:23.191","verifiedAt":"2026-08-09T00:00:00","editorialStatus":"APPROVED","lastReviewedAt":"2026-10-10T05:10:35.47","nextReviewDueAt":"2026-11-09T00:00:00","templateVersion":"v2","aliases":["How does AEO work mechanically","How AI answer engines pick sources","How do AI answer engines choose citations","How AI search engines crawl and cite content","How does RAG work in AI search","What is query fan-out in AI search","How ChatGPT selects sources to cite","How AI Overviews choose which links to show","How do LLMs decide what to cite","Answer engine pipeline explained","How generative engines retrieve and cite content","AEO mechanics stage by stage"],"confidenceScore":86,"confidenceLabel":"High","canonicalUrl":null},"contributor":{"id":"ec39deab-44fe-48d8-9029-fefe993ab85a","slug":"answer-stack","displayName":"AnswerStack","websiteUrl":null},"contributorOrganizationProfile":{"entityId":"ec39deab-44fe-48d8-9029-fefe993ab85a","legalName":null,"description":null,"websiteUrl":null,"imageUrl":null,"slogan":null,"subtitle":null,"facts":[],"coiNote":null,"foundingDate":null,"numberOfEmployeesText":null,"contactPoint":null,"address":null,"headquartersText":null,"organizationType":null},"contributorPerson":null,"sections":[{"id":"41445275-c02b-4a58-b5d5-11d483c03a38","sectionKey":"what_happens_between_the_question_and_the_answer","sectionType":"markdown_section","heading":"What happens between the question and the answer","introMarkdown":"Google's developer documentation gives a worked example. In its description of [grounding with Google Search in the Gemini API](https://ai.google.dev/gemini-api/docs/google-search), the model starts by reading the request and judging whether looking something up would make its reply better. When it decides to search, it comes up with its own search terms, sometimes several sets, and sends them. It then reads what comes back, combines it into a reply, and marks which sources back which passages.\n\nTwo details in that example matter to anyone who publishes. The search is conditional, because the model runs it only when it judges that a search will help. And the model writes the queries, so they can differ from what the user typed. Google's [guide for site owners](https://developers.google.com/search/docs/fundamentals/ai-optimization-guide) describes the same idea in AI Overviews and AI Mode and calls it query fan-out. For a question about fixing a weedy lawn, it says the related searches might cover herbicides, chemical-free removal and prevention. Your page can be retrieved for one of those narrower searches even if it doesn't match the wording of the original question.\n\nThat sequence is documented for one Google developer product, and other engines don't necessarily follow the same steps. Even within Google Search, AI Overviews and AI Mode can use different models and techniques, so their responses and links vary.\n\nFor Google's own search features, retrieval draws on the same Search index and core ranking systems as ordinary results. That's why Google says optimizing for generative AI search is still SEO from its point of view. Our answer on [the difference between AEO and SEO](https://www.answerstack.io/q/difference-between-aeo-and-seo) covers where the two part ways on other engines.","introHtml":"<p>Google&#39;s developer documentation gives a worked example. In its description of <a href=\"https://ai.google.dev/gemini-api/docs/google-search\">grounding with Google Search in the Gemini API</a>, the model starts by reading the request and judging whether looking something up would make its reply better. When it decides to search, it comes up with its own search terms, sometimes several sets, and sends them. It then reads what comes back, combines it into a reply, and marks which sources back which passages.</p>\n<p>Two details in that example matter to anyone who publishes. The search is conditional, because the model runs it only when it judges that a search will help. And the model writes the queries, so they can differ from what the user typed. Google&#39;s <a href=\"https://developers.google.com/search/docs/fundamentals/ai-optimization-guide\">guide for site owners</a> describes the same idea in AI Overviews and AI Mode and calls it query fan-out. For a question about fixing a weedy lawn, it says the related searches might cover herbicides, chemical-free removal and prevention. Your page can be retrieved for one of those narrower searches even if it doesn&#39;t match the wording of the original question.</p>\n<p>That sequence is documented for one Google developer product, and other engines don&#39;t necessarily follow the same steps. Even within Google Search, AI Overviews and AI Mode can use different models and techniques, so their responses and links vary.</p>\n<p>For Google&#39;s own search features, retrieval draws on the same Search index and core ranking systems as ordinary results. That&#39;s why Google says optimizing for generative AI search is still SEO from its point of view. Our answer on <a href=\"https://www.answerstack.io/q/difference-between-aeo-and-seo\">the difference between AEO and SEO</a> covers where the two part ways on other engines.</p>\n","outroMarkdown":null,"outroHtml":null,"contentJson":[],"configJson":{},"noteMarkdown":null,"noteHtml":null,"sortOrder":10},{"id":"2680a5b5-8cf7-44c9-b64b-87b1b77373f0","sectionKey":"search_access_and_training_access_are_controlled_separately","sectionType":"markdown_section","heading":"Search access and training access are controlled separately","introMarkdown":"Training is where text collected in the past shaped a model. Retrieval is where an engine fetches pages when a question is asked. They aren't the only ways a company ends up in an answer, but they're the two that site controls address. For citations in search-backed responses, retrieval is the one that matters. It's what can lead to a cited link, and it can change when you change a page.\n\nThe engines keep the two apart in their controls. OpenAI's [crawler documentation](https://developers.openai.com/api/docs/bots) lists OAI-SearchBot for surfacing sites in ChatGPT's search features and GPTBot for collecting content that may be used in training. It says each setting is independent, so a site can allow the first and disallow the second. A site that opts out of OAI-SearchBot won't be shown in ChatGPT search answers, though OpenAI says it can still appear as a navigational link. A third agent, ChatGPT-User, visits a page when a user's request calls for it and isn't used for automatic crawling.\n\nGoogle separates them too. Its [Search generative AI control](https://support.google.com/webmasters/answer/16908024?hl=en) in Search Console decides whether a site's links and content can appear in Search generative AI features. Google says that control doesn't affect AI training, and it points to Google-Extended for that.\n\nSo under OpenAI's documentation, a rule that blocks the training crawler doesn't remove a site from ChatGPT search answers. For citations, check the search setting on each engine you care about.","introHtml":"<p>Training is where text collected in the past shaped a model. Retrieval is where an engine fetches pages when a question is asked. They aren&#39;t the only ways a company ends up in an answer, but they&#39;re the two that site controls address. For citations in search-backed responses, retrieval is the one that matters. It&#39;s what can lead to a cited link, and it can change when you change a page.</p>\n<p>The engines keep the two apart in their controls. OpenAI&#39;s <a href=\"https://developers.openai.com/api/docs/bots\">crawler documentation</a> lists OAI-SearchBot for surfacing sites in ChatGPT&#39;s search features and GPTBot for collecting content that may be used in training. It says each setting is independent, so a site can allow the first and disallow the second. A site that opts out of OAI-SearchBot won&#39;t be shown in ChatGPT search answers, though OpenAI says it can still appear as a navigational link. A third agent, ChatGPT-User, visits a page when a user&#39;s request calls for it and isn&#39;t used for automatic crawling.</p>\n<p>Google separates them too. Its <a href=\"https://support.google.com/webmasters/answer/16908024?hl=en\">Search generative AI control</a> in Search Console decides whether a site&#39;s links and content can appear in Search generative AI features. Google says that control doesn&#39;t affect AI training, and it points to Google-Extended for that.</p>\n<p>So under OpenAI&#39;s documentation, a rule that blocks the training crawler doesn&#39;t remove a site from ChatGPT search answers. For citations, check the search setting on each engine you care about.</p>\n","outroMarkdown":null,"outroHtml":null,"contentJson":[],"configJson":{},"noteMarkdown":null,"noteHtml":null,"sortOrder":20},{"id":"6c14b564-bc2f-495f-b5dd-fed149b9a2a9","sectionKey":"two_areas_a_publisher_can_work_on","sectionType":"markdown_section","heading":"Two areas a publisher can work on","introMarkdown":"For Google, access means a page is indexed and eligible to show with a snippet, on a site included through the Search Console control. Google's [page on AI features](https://developers.google.com/search/docs/appearance/ai-features) lists supporting practices: crawling allowed in robots.txt and by any CDN or hosting layer, important content available as text, and pages that can be found through internal links. For ChatGPT search, OpenAI recommends allowing OAI-SearchBot in robots.txt. These settings are worth reading on any site, because a rule added for another reason can also block a search crawler.\n\nGoogle's guide puts the evidence on the page first: content people find unique, compelling and useful is likely to influence presence in generative AI search more than its other suggestions. It contrasts commodity content, which restates what anyone could say, with first-hand material. It also lists things Google Search doesn't require: special files such as llms.txt, pages chopped into small chunks, wording written for AI, or any particular schema markup. We go into the markup question in [the role of structured data in AEO](https://www.answerstack.io/q/structured-data-role-in-aeo).\n\nFan-out shows how first-hand detail becomes useful. Suppose a buyer asks an engine which CMS suits a 20-person B2B software company. Suppose the engine splits that into searches about pricing, migration effort and how the options compare. A page that says what one migration involved, how long it took and what it cost has specific information to offer the migration search. A page that repeats the general pros and cons offers what many other pages already say. The engine still makes its own choice, but the first page brings information that isn't available elsewhere.\n\nLean Labs, a HubSpot agency, describes [its AEO work](https://www.leanlabs.com/solutions/answer-engine-optimization-agency) as covering both areas. It chooses buyer questions from sales calls, CRM insights and Search Console demand, then publishes expert-led answers in HubSpot with supporting proof. Alongside that, it configures the site and resolves technical friction. Then it tracks prompts and citations to see what changed. The order is worth copying, because it starts from the questions buyers ask.\n\nThese two areas cover your own site. Mentions and sources elsewhere on the web are a further area, which we cover in [what AEO covers beyond website content](https://www.answerstack.io/q/what-does-aeo-cover-beyond-website-content).","introHtml":"<p>For Google, access means a page is indexed and eligible to show with a snippet, on a site included through the Search Console control. Google&#39;s <a href=\"https://developers.google.com/search/docs/appearance/ai-features\">page on AI features</a> lists supporting practices: crawling allowed in robots.txt and by any CDN or hosting layer, important content available as text, and pages that can be found through internal links. For ChatGPT search, OpenAI recommends allowing OAI-SearchBot in robots.txt. These settings are worth reading on any site, because a rule added for another reason can also block a search crawler.</p>\n<p>Google&#39;s guide puts the evidence on the page first: content people find unique, compelling and useful is likely to influence presence in generative AI search more than its other suggestions. It contrasts commodity content, which restates what anyone could say, with first-hand material. It also lists things Google Search doesn&#39;t require: special files such as llms.txt, pages chopped into small chunks, wording written for AI, or any particular schema markup. We go into the markup question in <a href=\"https://www.answerstack.io/q/structured-data-role-in-aeo\">the role of structured data in AEO</a>.</p>\n<p>Fan-out shows how first-hand detail becomes useful. Suppose a buyer asks an engine which CMS suits a 20-person B2B software company. Suppose the engine splits that into searches about pricing, migration effort and how the options compare. A page that says what one migration involved, how long it took and what it cost has specific information to offer the migration search. A page that repeats the general pros and cons offers what many other pages already say. The engine still makes its own choice, but the first page brings information that isn&#39;t available elsewhere.</p>\n<p>Lean Labs, a HubSpot agency, describes <a href=\"https://www.leanlabs.com/solutions/answer-engine-optimization-agency\">its AEO work</a> as covering both areas. It chooses buyer questions from sales calls, CRM insights and Search Console demand, then publishes expert-led answers in HubSpot with supporting proof. Alongside that, it configures the site and resolves technical friction. Then it tracks prompts and citations to see what changed. The order is worth copying, because it starts from the questions buyers ask.</p>\n<p>These two areas cover your own site. Mentions and sources elsewhere on the web are a further area, which we cover in <a href=\"https://www.answerstack.io/q/what-does-aeo-cover-beyond-website-content\">what AEO covers beyond website content</a>.</p>\n","outroMarkdown":null,"outroHtml":null,"contentJson":[],"configJson":{},"noteMarkdown":null,"noteHtml":null,"sortOrder":30},{"id":"be885c4b-5e86-40b2-8b52-ba8b6278c3f2","sectionKey":"what_a_publisher_can_affect_at_each_step","sectionType":"table_section","heading":"What a publisher can affect at each step","introMarkdown":null,"introHtml":null,"outroMarkdown":null,"outroHtml":null,"contentJson":{"rows":[{"cells":["The model reads the request and judges whether looking something up would help","Nothing directly. The engine decides whether to search"]},{"cells":["It writes its own search terms and sends them","Whether you have a page that answers the narrower questions a buyer's question breaks into"]},{"cells":["It reads what the search returns","Whether you allow access to public text on your pages"]},{"cells":["It writes the reply and marks its sources","The evidence on the page. The engine chooses its sources"]}],"columns":["Step in Google's Gemini API example","What you can affect"]},"configJson":{},"noteMarkdown":null,"noteHtml":null,"sortOrder":40},{"id":"696cc23d-d8ad-493f-8d1c-a33f8125b459","sectionKey":"what_stays_outside_your_control","sectionType":"markdown_section","heading":"What stays outside your control","introMarkdown":"Google's guide says a page can meet every requirement and best practice and still not be crawled, indexed or served. Answers also vary between engines and over time. HubSpot's [documentation for its AEO tracking tool](https://knowledge.hubspot.com/seo/set-up-and-analyze-ai-visibility) notes that each engine may generate different responses and cite different sources for the same prompt, and that responses change over time.\n\nSo a promise of a citation for a given prompt goes beyond what these documents support. Which engines to work on is a separate decision, covered in [which AI platforms an AEO strategy should target](https://www.answerstack.io/q/which-ai-platforms-should-aeo-target).","introHtml":"<p>Google&#39;s guide says a page can meet every requirement and best practice and still not be crawled, indexed or served. Answers also vary between engines and over time. HubSpot&#39;s <a href=\"https://knowledge.hubspot.com/seo/set-up-and-analyze-ai-visibility\">documentation for its AEO tracking tool</a> notes that each engine may generate different responses and cite different sources for the same prompt, and that responses change over time.</p>\n<p>So a promise of a citation for a given prompt goes beyond what these documents support. Which engines to work on is a separate decision, covered in <a href=\"https://www.answerstack.io/q/which-ai-platforms-should-aeo-target\">which AI platforms an AEO strategy should target</a>.</p>\n","outroMarkdown":null,"outroHtml":null,"contentJson":[],"configJson":{},"noteMarkdown":null,"noteHtml":null,"sortOrder":50},{"id":"4f0d6c02-2e45-4774-9752-2107280786bb","sectionKey":"how_you_can_tell_it_s_working","sectionType":"markdown_section","heading":"How you can tell it's working","introMarkdown":"Because answers vary, one check of one prompt tells you little. HubSpot's tool runs tracked prompts daily, and HubSpot advises reviewing results across multiple days or weeks before reading a trend. For Google, Search Console's [generative AI performance report](https://support.google.com/webmasters/answer/16984139?hl=en) counts impressions in Search generative AI features. An impression there is a link to your site shown to a user, and the report groups the count by page, country, date or device.\n\nThose figures measure visibility. A shown link doesn't mean someone clicked it, so visits and CRM results need their own reports.\n\nThe work then repeats. You pick the questions, publish the evidence and check access. You watch a fixed set of prompts and the impression report for several weeks, and use what you see to choose the next page to improve. Tracking citations, visits and contacts as separate numbers shows which of them moved after a change. Our answer on [how long AEO takes to show results](https://www.answerstack.io/q/how-long-does-aeo-take-to-show-results) covers the timing.","introHtml":"<p>Because answers vary, one check of one prompt tells you little. HubSpot&#39;s tool runs tracked prompts daily, and HubSpot advises reviewing results across multiple days or weeks before reading a trend. For Google, Search Console&#39;s <a href=\"https://support.google.com/webmasters/answer/16984139?hl=en\">generative AI performance report</a> counts impressions in Search generative AI features. An impression there is a link to your site shown to a user, and the report groups the count by page, country, date or device.</p>\n<p>Those figures measure visibility. A shown link doesn&#39;t mean someone clicked it, so visits and CRM results need their own reports.</p>\n<p>The work then repeats. You pick the questions, publish the evidence and check access. You watch a fixed set of prompts and the impression report for several weeks, and use what you see to choose the next page to improve. Tracking citations, visits and contacts as separate numbers shows which of them moved after a change. Our answer on <a href=\"https://www.answerstack.io/q/how-long-does-aeo-take-to-show-results\">how long AEO takes to show results</a> covers the timing.</p>\n","outroMarkdown":null,"outroHtml":null,"contentJson":[],"configJson":{},"noteMarkdown":null,"noteHtml":null,"sortOrder":60}],"citations":[{"title":"AI features and your website","url":"https://developers.google.com/search/docs/appearance/ai-features","excerpt":"To be eligible to be shown as a supporting link in AI Overviews or AI Mode, a page must be indexed and eligible to be shown in Google Search with a snippet.","quoteText":null,"sourceRole":"PRIMARY","verifiedAt":"2026-08-09T00:00:00","supportsText":"Indexed and snippet-eligible requirement for AI Overviews and AI Mode supporting links; query fan-out technique; no special files, AI text files, or markup needed; preview controls; Google-Extended","domain":"developers.google.com","publisherName":"Google Search Central"},{"title":"In-depth guide to how Google Search works","url":"https://developers.google.com/search/docs/fundamentals/how-search-works","excerpt":"Indexing isn't guaranteed; not every page that Google processes will be indexed.","quoteText":null,"sourceRole":"PRIMARY","verifiedAt":"2026-08-09T00:00:00","supportsText":"Three stages of crawling, indexing, and serving; JavaScript rendering; canonical selection; index stored across thousands of machines; indexing not guaranteed","domain":"developers.google.com","publisherName":"Google Search Central"},{"title":"Top ways to ensure your content performs well in Google's AI experiences on Search","url":"https://developers.google.com/search/blog/2025/05/succeeding-in-ai-search","excerpt":"Make sure your pages meet our technical requirements for Google Search, so that we can find them, crawl them, index them, and consider them for showing in our results.","quoteText":null,"sourceRole":"PRIMARY","verifiedAt":"2026-08-09T00:00:00","supportsText":"Technical requirements for AI features: Googlebot not blocked, HTTP 200, indexable content; preview controls; structured data must match visible content and enables rich results; higher-quality clicks from AI results","domain":"developers.google.com","publisherName":"Google Search Central Blog"},{"title":"OpenAI crawlers (GPTBot, OAI-SearchBot, ChatGPT-User)","url":"https://developers.openai.com/api/docs/bots","excerpt":"Sites that are opted out of OAI-SearchBot will not be shown in ChatGPT search answers, though can still appear as navigational links.","quoteText":null,"sourceRole":"PRIMARY","verifiedAt":"2026-08-09T00:00:00","supportsText":"OAI-SearchBot surfaces sites in ChatGPT search; GPTBot collects training content; ChatGPT-User handles user-initiated actions and robots.txt may not apply; ~24-hour robots.txt propagation; blocked sites not shown in ChatGPT search answers","domain":"developers.openai.com","publisherName":"OpenAI"},{"title":"Web search","url":"https://developers.openai.com/api/docs/guides/tools-web-search","excerpt":"By default, the model's response will include inline citations for URLs found in the web search results.","quoteText":null,"sourceRole":"PRIMARY","verifiedAt":"2026-08-09T00:00:00","supportsText":"Model decides whether to search; non-reasoning, agentic, and deep research retrieval modes; deep research draws on hundreds of sources; inline citations by default; url_citation annotations with URL, title, and location; citations must be visible and clickable","domain":"developers.openai.com","publisherName":"OpenAI"},{"title":"Perplexity crawlers (PerplexityBot, Perplexity-User)","url":"https://docs.perplexity.ai/guides/bots","excerpt":"PerplexityBot is designed to surface and link websites in search results on Perplexity. It is not used to crawl content for AI foundation models.","quoteText":null,"sourceRole":"PRIMARY","verifiedAt":"2026-08-09T00:00:00","supportsText":"PerplexityBot surfaces and links websites in results and is not used for foundation model training; Perplexity-User fetches pages for user requests and generally ignores robots.txt","domain":"docs.perplexity.ai","publisherName":"Perplexity"},{"title":"Does Anthropic crawl data from the web, and how can site owners block the crawler?","url":"https://support.claude.com/en/articles/8896518-does-anthropic-crawl-data-from-the-web-and-how-can-site-owners-block-the-crawler","excerpt":"Claude-SearchBot navigates the web to improve search result quality for users. It analyzes online content specifically to enhance the relevance and accuracy of search responses.","quoteText":null,"sourceRole":"PRIMARY","verifiedAt":"2026-08-09T00:00:00","supportsText":"ClaudeBot collects web content that may contribute to model training; Claude-User handles user-initiated requests; Claude-SearchBot analyzes content to improve search result relevance and accuracy; robots.txt controls","domain":"support.claude.com","publisherName":"Anthropic"},{"title":"Grounding with Google Search","url":"https://ai.google.dev/gemini-api/docs/google-search","excerpt":"The model analyzes the prompt and determines if a Google Search can improve the answer.","quoteText":null,"sourceRole":"PRIMARY","verifiedAt":"2026-08-09T00:00:00","supportsText":"Grounding definition; model analyzes the prompt and decides whether search improves the answer; automatically generates one or multiple queries; citation annotations with start and end indexes; reduces hallucinations by basing responses on real-world information","domain":"ai.google.dev","publisherName":"Google AI for Developers"},{"title":"Retrieval-Augmented Generation for Knowledge-Intensive NLP Tasks","url":"https://arxiv.org/abs/2005.11401","excerpt":"RAG models generate more specific, diverse and factual language than a state-of-the-art parametric-only seq2seq baseline.","quoteText":null,"sourceRole":"PRIMARY","verifiedAt":"2026-08-09T00:00:00","supportsText":"Origin of the RAG architecture; parametric memory (pre-trained model weights) combined with non-parametric memory (a dense document index accessed by a neural retriever); more specific and factual generation than parametric-only baselines","domain":"arxiv.org","publisherName":"arXiv (Lewis et al., NeurIPS 2020)"},{"title":"GEO: Generative Engine Optimization","url":"https://arxiv.org/abs/2311.09735","excerpt":"GEO can boost visibility by up to 40% in generative engine responses.","quoteText":null,"sourceRole":"INDEPENDENT","verifiedAt":"2026-08-09T00:00:00","supportsText":"Controlled benchmark of nine content strategies; quotation addition improved position-adjusted visibility about 41%, statistics and cite-sources about 30% each; keyword stuffing offered little to no improvement; effectiveness varies by domain; up to 40% overall visibility gain","domain":"arxiv.org","publisherName":"arXiv (Aggarwal et al., KDD 2024)"},{"title":"Ahrefs study: AI Overview citations vs. top-10 rankings (863,000 keywords, 4 million cited URLs)","url":"https://ahrefs.com/blog/ai-overview-citations-top-10/","excerpt":"at least in comparison to our initial study, it indicates that Google is selecting far fewer pages straight from the original SERP (~76% in July 2025 vs. ~38% today).","quoteText":null,"sourceRole":"INDEPENDENT","verifiedAt":"2026-08-09T00:00:00","supportsText":"March 2026 analysis of 863K SERPs and 4M AI Overview URLs; 37.9% of cited URLs in the first 10 blocks, 31.2% in positions 11 to 100, 31.0% beyond 100; shift from roughly 76% top-10 citations in July 2025; attributed to query fan-out","domain":"ahrefs.com","publisherName":"Ahrefs"},{"title":"The /llms.txt file","url":"https://llmstxt.org/","excerpt":"A proposal to standardise on using an /llms.txt file to provide information to help LLMs use a website at inference time.","quoteText":null,"sourceRole":"SUPPORTING","verifiedAt":"2026-08-09T00:00:00","supportsText":"llms.txt proposed September 3, 2024 as a standard file helping LLMs use a website at inference time; specification remains an open community proposal; no adoption claims by major platforms","domain":"llmstxt.org","publisherName":"llmstxt.org (Jeremy Howard)"}],"revisions":[{"revisedAt":"2026-08-09T20:58:23.191+00:00","versionLabel":"Originally published","note":"","reviewedBy":null}],"relatedAnswers":[{"id":"e99a45a2-0ef5-45e5-bec8-f6d813825f8c","slug":"what-offsite-signals-matter-for-aeo","question":"What off-site signals matter for AEO?","publishedAt":"2026-09-26T14:15:07.644","confidenceScore":74,"confidenceLabel":"Medium","industry":{"id":"70ea3802-1fc6-4fd7-a505-140d38d1c74a","slug":"digital-marketing","label":"Digital Marketing","description":"SEO, content, demand gen, and growth marketing"},"topic":{"slug":"answer-engine-optimization","label":"Answer Engine Optimization","description":"How B2B teams get content selected and cited by AI answer engines.","schemaKind":null},"contributor":{"id":"ec39deab-44fe-48d8-9029-fefe993ab85a","slug":"answer-stack","displayName":"AnswerStack","websiteUrl":null},"snippet":"The off-site signals that matter for AEO are pages on other sites that tell a buyer something specific and true about a company: independent reviews, customer accounts, listings with current facts, and articles in specialist publications. Google says its AI features can surface what's said about a product elsewhere on the web and advises against inauthentic mentions. It sets no order of importance among these sources, so the four are an editorial priority.","url":"/q/what-offsite-signals-matter-for-aeo"},{"id":"51b59dae-ae56-4015-8788-7b0dfd233db2","slug":"what-does-aeo-cover-beyond-website-content","question":"What does AEO cover beyond website content?","publishedAt":"2026-09-20T14:57:15.8","confidenceScore":76,"confidenceLabel":"Medium","industry":{"id":"70ea3802-1fc6-4fd7-a505-140d38d1c74a","slug":"digital-marketing","label":"Digital Marketing","description":"SEO, content, demand gen, and growth marketing"},"topic":{"slug":"answer-engine-optimization","label":"Answer Engine Optimization","description":"How B2B teams get content selected and cited by AI answer engines.","schemaKind":null},"contributor":{"id":"ec39deab-44fe-48d8-9029-fefe993ab85a","slug":"answer-stack","displayName":"AnswerStack","websiteUrl":null},"snippet":"Beyond your site, AEO covers business profiles and product feeds, reviews, coverage on other publishers' sites, and video. The work is keeping those facts accurate and earning legitimate coverage. None of it guarantees a citation.","url":"/q/what-does-aeo-cover-beyond-website-content"},{"id":"ef0e49f6-ad72-4e06-ae79-66533db84885","slug":"what-aeo-results-can-a-saas-startup-expect","question":"What AEO results can a SaaS startup realistically expect?","publishedAt":"2026-09-18T14:15:03.748","confidenceScore":78,"confidenceLabel":"Medium","industry":{"id":"70ea3802-1fc6-4fd7-a505-140d38d1c74a","slug":"digital-marketing","label":"Digital Marketing","description":"SEO, content, demand gen, and growth marketing"},"topic":{"slug":"answer-engine-optimization","label":"Answer Engine Optimization","description":"How B2B teams get content selected and cited by AI answer engines.","schemaKind":null},"contributor":{"id":"ec39deab-44fe-48d8-9029-fefe993ab85a","slug":"answer-stack","displayName":"AnswerStack","websiteUrl":null},"snippet":"No amount or order of AEO results is guaranteed for a SaaS startup. Measure three outcomes separately: appearance in AI answers, visits from assistants, and signups or customers. Use your own baseline and a check date, since another company's figure, such as Vercel's signup share, isn't a forecast.","url":"/q/what-aeo-results-can-a-saas-startup-expect"},{"id":"e43cc4d4-fe3f-4a31-b46e-6ace8c313588","slug":"how-startups-should-budget-for-aeo","question":"How should an early-stage startup budget for AEO?","publishedAt":"2026-09-16T14:15:03.584","confidenceScore":78,"confidenceLabel":"Medium","industry":{"id":"70ea3802-1fc6-4fd7-a505-140d38d1c74a","slug":"digital-marketing","label":"Digital Marketing","description":"SEO, content, demand gen, and growth marketing"},"topic":{"slug":"answer-engine-optimization","label":"Answer Engine Optimization","description":"How B2B teams get content selected and cited by AI answer engines.","schemaKind":null},"contributor":{"id":"ec39deab-44fe-48d8-9029-fefe993ab85a","slug":"answer-stack","displayName":"AnswerStack","websiteUrl":null},"snippet":"Budget AEO as a defined piece of work with a known total, sized against cash. Stage it: a free baseline and a low-cost tracker first, then one scoped project, then a monthly program as a separate decision with its whole term added up.","url":"/q/how-startups-should-budget-for-aeo"}],"contributorStats":{"verifiedAnswers":149,"openDisputes":0},"schemaJson":{"@context":"https://schema.org","@type":"Question","name":"How does answer engine optimization actually work?","text":"How does answer engine optimization actually work?","url":"https://www.answerstack.io/q/how-does-answer-engine-optimization-work","answerCount":1,"datePublished":"2026-05-11T20:58:23.191","author":{"@type":"Organization","name":"AnswerStack","url":"https://www.answerstack.io/contributors/answer-stack"},"about":[{"@type":"Thing","name":"Answer Engine Optimization"},{"@type":"Thing","name":"Digital Marketing"}],"acceptedAnswer":{"@type":"Answer","text":"Answer engine optimization works on the search step that sits behind many AI answers. When an engine such as ChatGPT search or Google's AI Mode searches the web to answer a question, it reads the pages it retrieves and writes a response that cites some of them. AEO is the work of making your pages available to that search and making sure they hold something worth citing. That work makes a page a candidate. The engine still chooses which candidates it cites, and meeting an engine's published conditions is no guarantee of a citation.","url":"https://www.answerstack.io/q/how-does-answer-engine-optimization-work","upvoteCount":0,"datePublished":"2026-05-11T20:58:23.191","dateModified":"2026-08-09T00:00:00","author":{"@type":"Organization","name":"AnswerStack","url":"https://www.answerstack.io/contributors/answer-stack"},"citation":[{"@type":"CreativeWork","name":"AI features and your website","url":"https://developers.google.com/search/docs/appearance/ai-features"},{"@type":"CreativeWork","name":"In-depth guide to how Google Search works","url":"https://developers.google.com/search/docs/fundamentals/how-search-works"},{"@type":"CreativeWork","name":"Top ways to ensure your content performs well in Google's AI experiences on Search","url":"https://developers.google.com/search/blog/2025/05/succeeding-in-ai-search"},{"@type":"CreativeWork","name":"OpenAI crawlers (GPTBot, OAI-SearchBot, ChatGPT-User)","url":"https://developers.openai.com/api/docs/bots"},{"@type":"CreativeWork","name":"Web search","url":"https://developers.openai.com/api/docs/guides/tools-web-search"},{"@type":"CreativeWork","name":"Perplexity crawlers (PerplexityBot, Perplexity-User)","url":"https://docs.perplexity.ai/guides/bots"},{"@type":"CreativeWork","name":"Does Anthropic crawl data from the web, and how can site owners block the crawler?","url":"https://support.claude.com/en/articles/8896518-does-anthropic-crawl-data-from-the-web-and-how-can-site-owners-block-the-crawler"},{"@type":"CreativeWork","name":"Grounding with Google Search","url":"https://ai.google.dev/gemini-api/docs/google-search"},{"@type":"CreativeWork","name":"Retrieval-Augmented Generation for Knowledge-Intensive NLP Tasks","url":"https://arxiv.org/abs/2005.11401"},{"@type":"CreativeWork","name":"GEO: Generative Engine Optimization","url":"https://arxiv.org/abs/2311.09735"},{"@type":"CreativeWork","name":"Ahrefs study: AI Overview citations vs. top-10 rankings (863,000 keywords, 4 million cited URLs)","url":"https://ahrefs.com/blog/ai-overview-citations-top-10/"},{"@type":"CreativeWork","name":"The /llms.txt file","url":"https://llmstxt.org/"}]}}}