The Bing index
ChatGPT search relies on the Bing index. A page missing from Bing has very little chance of being read, even if it ranks well on Google.
AI search optimization · ChatGPT
How to rank in ChatGPT: get your brand recommended by ChatGPT
Ranking in ChatGPT (ChatGPT SEO, or GEO for ChatGPT) means getting your brand cited in ChatGPT’s answers when buyers ask which provider, software or product to choose. ChatGPT reads the Bing index, pages readable without JavaScript and ranking sites, so that is where we work, with a free audit and ongoing support from €990 per month excl. VAT.
Updated
14% → 73%
our own ChatGPT visibility in one day (Peec AI, Oct 2, 2026)
1 week
from invisible to first in some categories
€0
GEO audit and setup
€990
per month excl. VAT, starting price
Definition
What is ChatGPT SEO?
ChatGPT SEO is the part of GEO (generative engine optimization) focused on ChatGPT. The goal is not a position in a list of links but a place in the written answer: “Which recruitment agency in London?”, “Which invoicing software for a small business?”, “Which online eyewear brand?”.
You will also hear AI search optimization, AI SEO, LLM visibility or AEO. The principle is the same: ChatGPT recommends two or three brands, and the one named first takes most of the attention. Classic SEO still helps, but it is not enough, because ChatGPT does not read Google.
How it works
How ChatGPT picks its sources
When ChatGPT searches the web, it only reads a handful of pages. Its choices follow fairly stable rules, which we measure every week on our clients’ prompts.
OAI-SearchBot
The OpenAI crawler that feeds ChatGPT search. If your robots.txt or firewall blocks it, your pages are out of the game.
Pages readable without JavaScript
AI crawlers struggle with content rendered by JavaScript. A site whose text only exists after the script runs is often invisible to ChatGPT.
Ranking sites
On buying questions, ChatGPT cites “top 10”, “best of” and comparison pages heavily. Being listed there often weighs more than your own site.
Diagnosis
Why ChatGPT does not cite you
- Your site is not (or poorly) indexed on Bing: no Bing Webmaster Tools, no sitemap submitted, pages discovered too late.
- OAI-SearchBot is blocked by robots.txt, a CDN or bot protection switched on by default.
- Your content depends on JavaScript: the crawler gets an empty or near-empty page.
- No page answers the buyer’s question: no page per service, per city or per use case.
- You are missing from the rankings ChatGPT reads in your category, while your competitors are in them.
- Nobody talks about you elsewhere: no Reddit, no YouTube, no LinkedIn articles, no comparisons.
Our method
What we do to rank you in ChatGPT
- 01
Measure on your real prompts
Free GEO audit: 10 to 50 buying questions (up to 200), tracked for 3 to 4 days in Profound or Peec AI. Rank, visibility rate, competitors cited, pages ChatGPT reads.
- 02
Make the site readable
Bing indexing, OAI-SearchBot access, rendering without JavaScript, structured data and llms.txt, checked with in-house tools built with Claude Code. See the technical side.
- 03
Publish what ChatGPT looks for
1 to 5 GEO articles per week in your tone of voice, published then manually submitted for indexing on Google and Bing. You approve everything in your client portal.
- 04
Get into the rankings
We find the rankings and comparisons ChatGPT cites in your category, then contact their publishers when you are missing. We never buy backlinks.
- 05
Accelerate with satellite sites
Our most powerful method, built in-house and reserved for our clients. In some categories it takes a brand from invisible to first on ChatGPT in one week.
Our proof
14% → 73% ChatGPT visibility in one day
We apply the method to ourselves, on the most contested category in our market: “GEO agency”. On October 2, 2026, our visibility score in ChatGPT went from 14% to 73% in a single day, then above 80% the following week, measured in Peec AI on our own prompts.
Most of that jump comes from our satellite sites. We do not publish how they work: it is an advantage reserved for our clients. See the companies we work with.
Comparison
Google SEO vs ChatGPT SEO: what changes
| Google SEO | ChatGPT SEO | |
|---|---|---|
| Goal | A position among ten links | A citation in an answer naming two or three brands |
| Index used | Google index | Bing index, read by OAI-SearchBot |
| Sources that matter | Your site and its backlinks | Rankings, comparisons, Reddit, YouTube, your site |
| Technical | Google renders JavaScript | Pages readable without JavaScript are essential |
| Measurement | Search Console, positions | Visibility rate and rank on prompts tracked daily |
ChatGPT Ads
What about advertising inside ChatGPT?
ChatGPT SEO works on the natural (organic) answer. Advertising in ChatGPT is a separate lever: we have already installed pixels and launched first campaigns for several clients to get ahead. The two complement each other without replacing each other. Discover our ChatGPT Ads offer.
FAQ
Frequently asked questions
How do I rank in ChatGPT?
To rank in ChatGPT, your site must be indexed on Bing, open to OAI-SearchBot and readable without JavaScript, and your brand must appear in the rankings and comparisons ChatGPT reads in your category. A GEO audit shows which ones are missing.
Which sources does ChatGPT use to recommend a brand?
ChatGPT relies on the Bing index and cites ranking sites, comparisons, Reddit and YouTube heavily, on top of brand websites. Your own site counts, but what others say about you often counts more.
Is Google SEO enough to appear in ChatGPT?
No. Google SEO helps, but ChatGPT reads the Bing index and favors pages readable without JavaScript. A site ranking first on Google can be absent from ChatGPT’s answers.
How long does it take to get cited by ChatGPT?
First results usually come after one to two months. With our satellite sites, some categories go from invisible to first on ChatGPT in one week.
How much does a ChatGPT SEO agency cost at Archipel?
ChatGPT SEO is part of our GEO program: from €990 per month excl. VAT, 6-month commitment, free audit and setup, tracking tool included.
Should I block GPTBot or OAI-SearchBot?
Blocking OAI-SearchBot removes your pages from ChatGPT search, so we always let it through. GPTBot is used for model training; the choice depends on your content policy, and we advise case by case.
Can you guarantee first place in ChatGPT?
No, nobody controls ChatGPT’s answer. We commit to a method, actions every week and transparent measurement of your visibility, prompt by prompt.
Shall we get started?
Free GEO audit: your rank on ChatGPT, Claude and Google AI Overviews, your competitors and your first actions. Reply within half a business day.