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What is AI SEO and how to build an AI SEO strategy

AI SEO gets your pages cited by AI answers. ChatGPT reached 1.2B weekly users in Sep 2026 and sent 95.1% of AI referral traffic in Aug 2026.

Updated October 30, 20265 min read

1.2BWeekly active ChatGPT users reported by OpenAI in September 2026
55.5%Citation rate for position 1 of ChatGPT's first search (Oct 2026)
51.2%Vendor pricing pages cited when retrieved in our October 2026 study

In short

AI SEO means getting your pages cited by AI answers like ChatGPT search and Google AI Overviews, or using AI tools for classic SEO.
ChatGPT reached 1.2 billion weekly users in September 2026 (OpenAI), and Google AI Overviews passed 2.5 billion monthly users in May 2026.
FoundByChat's October 2026 research found the result in position 1 of ChatGPT's first search was cited in 55.5% of the answers studied and vendor pricing pages 51.2% when retrieved.
Let OAI-SearchBot crawl plain HTML, put facts on pricing and product pages, and track your ChatGPT index.

With 68.01% of Google searches ending without a click from January to April 2026 (SparkToro/Similarweb), uncited brands may miss opportunities to reach buyers.

What is AI SEO and how does it differ from classic SEO

AI SEO means optimizing pages so AI answer engines retrieve, quote and cite them, though some use the term for drafting articles with AI. In practice, an AI SEO strategy means earning visibility in ChatGPT search, Google AI Overviews and Google AI Mode, also covered in our guides on what is GEO and AI search optimization.

AI referrals are a small traffic share, but visitors convert well. Ahrefs found in September 2026 across 115,254 sites that AI assistants sent 0.43% of traffic versus 26.82% from search, and Conductor measured 1.08% across 1,215 enterprise sites (May to September 2025). However, Adobe reported in October 2026 that U.S. retail AI traffic grew 71% year over year in September 2026, with AI visitors converting 90% better and bringing 83% more revenue per visit than non-AI visitors. Visibility Labs also found across 94 ecommerce brands in 2025 that ChatGPT visitors converted at 1.81% versus 1.39% for non-branded organic search.

Area	Classic SEO	AI SEO
Primary goal	Rank in the top 10 blue links for a keyword	Get retrieved in the top 3 results and cited in the AI answer
Typical query	Short keyword phrases	Conversational prompts (Google said in Oct 2026 AI Mode queries are 3x longer than traditional searches)
Key crawlers	Googlebot, Bingbot	`OAI-SearchBot` for search; `ChatGPT-User` for user fetches
Best-performing pages	Whichever page ranks for the keyword	Vendor pricing, product and help pages had the highest citation rates among the types studied in FoundByChat's ChatGPT research
How value arrives	Direct clicks from the results page	Citations and referrals, including from ChatGPT

BrightEdge reported in September 2026 that ChatGPT sent 95.1% of AI referral traffic in August 2026 (Gemini 2.4%, Perplexity 1.1%, Claude 0.8%), with ChatGPT referrals up 101% from January to August 2026. OpenAI's September 2025 study showed "Seeking Information" reached 24% of ChatGPT messages, up from 14% a year earlier.

A 5-step AI SEO strategy that works in 2026

An effective AI SEO strategy focuses on bot access, retrieval rank and factual commercial pages. Consider these five steps. See how ChatGPT search works.

1. Open your site to OAI-SearchBot and serve plain HTML

OpenAI's search crawler uses the OAI-SearchBot user agent. Blocking OAI-SearchBot in robots.txt or a firewall can prevent OpenAI's search crawler from accessing your pages. Ensure the page responds and put main text in raw HTML without requiring JavaScript.

2. Win the top 3 search positions for buyer questions

In our October 2026 study of 218 ChatGPT answers with web search, ChatGPT cited 2.2 different URLs per answer on average (10.3% of retrieved results). Position 1 of ChatGPT's first search was cited 55.5% of the time, position 2 got 34.9%, position 3 got 27.5%, positions 4-5 got 14.4%, positions 6-10 got 8.1%, positions 11-15 got 2.4%, and 16+ got 0.4%.

3. Put clear facts on your pricing, product and help pages

In FoundByChat's October 2026 study of 4,203 labelled search results across 211 ChatGPT answers, pages on a company's own site were cited 20.1% of the time when retrieved, versus 3.9% for third-party pages about the company (odds ratio 13.1). Citation rates by page type:

Vendor pricing pages: 51.2%
Vendor product pages: 28.4%
Docs and help pages: 23.0%
Vendor blog posts: 14.5%
Third-party listicles and reviews: 7.5%
"A vs B" comparison pages: 4.2%
PDFs: 0.4%

State prices, plan limits and specs on HTML pricing and product pages, not in PDFs.

4. Add quotations, statistics and named sources

The KDD 2024 study "GEO: Generative Engine Optimization" by Pranjal Aggarwal and colleagues tested 10,000 queries on GEO-bench using Google's top 5 sources and gpt-3.5-turbo. On position-adjusted word count, adding quotations improved visibility by 41% (27.2 versus a 19.3 baseline), statistics scored 25.2, and citing sources scored 24.6, while keyword stuffing scored 17.7. On Perplexity.ai, quotations gave a 22% gain.

5. Clean up your opening sentence and approximately 200-character snippet

ChatGPT's search keeps your title and an ~200-character snippet. Keep cookie banners and menus out of that snippet, put a factual opening sentence after your H1, and align your title, H1 and JSON-LD.

How to check and measure your AI SEO results

Run the free GEO audit (no account needed, 5/day). It fetches your page with the OAI-SearchBot user agent, rebuilds the title and approximately 200-character snippet ChatGPT keeps, looks the page up in ChatGPT and scores it out of 100 across bot access, plain-HTML text, snippet leaks, JSON-LD, llms.txt and robots.txt.

To monitor over time, FoundByChat checks your customer questions every 2 hours with web search on from the US (English) or the Netherlands (Dutch). It tracks whether ChatGPT found ("Found") or cited ("Cited") your page, your usual position, "Pages in ChatGPT's index" and email alerts. See our guide on ChatGPT citations for Found versus Cited.

Common AI SEO mistakes to avoid

Chasing Reddit threads instead of fixing your site. In our October 2026 study of 218 ChatGPT answers, Reddit was 28% of retrieved results but only 2 of 2,462 citations.
Writing "A vs B" posts while neglecting your pricing page. "A vs B" pages were cited 4.2% when retrieved, versus 51.2% for vendor pricing pages.
Assuming one manual check proves your ranking. One check cannot prove an edit caused a citation change.

FOUNDBYCHAT

Know the moment ChatGPT picks up your pages

We ask ChatGPT your questions every 2 hours and mail you what its index picked up or rewrote. Free to start: sign in with Google or an email link.

Start free Or run the free GEO audit

Questions

Is AI SEO the same as GEO and AEO?

In everyday marketing use, yes: AI SEO, Generative Engine Optimization (GEO) and Answer Engine Optimization (AEO) all mean getting pages found and cited by AI answers. See our comparison of GEO vs SEO.

Does blocking GPTBot hurt my AI SEO in ChatGPT search?

The audit checks GPTBot rules and access for OAI-SearchBot, OpenAI's search crawler. Check access for OAI-SearchBot, OpenAI's search crawler.

How much website traffic comes from AI search in 2026?

Marie Haynes found across 100 sites, in a report published in October 2026 that ChatGPT sessions equaled 0.62% of Google organic sessions. Still, Similarweb counted 770.7 million monthly AI referral visits worldwide from June 2025 to May 2026 (up 117.4% YoY), and a 2026 Marketing Science study of 973 sites found ChatGPT-referred conversions were above paid social but below the other traditional channels.

Has AI search killed Google Search?

No. Gartner predicted in February 2024 that traditional search engine volume would drop 25% by 2026, yet Google reported in Q3 2026 its highest YoY query growth rate in five years, with AI Mode passing 1 billion monthly users in May 2026. Similarweb estimated chatgpt.com had about 5.9 billion web visits in September 2026.

How can I check if ChatGPT is citing my website?

Use FoundByChat to track whether ChatGPT cites your pages; the free GEO audit checks OAI-SearchBot access and the approximately 200-character snippet. To track customer questions every 2 hours, FoundByChat is free to start with Google or an email link.