Published July 8, 2026 · reviewed July 17, 2026
How ChatGPT picks sources
By Julien Coulaud · Recometrix editorial review
ChatGPT can answer from model memory or search the web. When it searches, it finds pages it can access that match the question, then uses a small set of them in the answer.
The two modes people confuse
| Mode | What happens | How brands show up |
|---|---|---|
| Model memory | The model answers from what it already learned during training and post-training. | Broad brand awareness, repeated mentions, and clear positioning matter. |
| Live search | The assistant retrieves fresh pages from search and crawl systems and summarizes them. | Indexability, OAI-SearchBot access, third-party pages, and source clarity matter more. |
Why indexing and OAI-SearchBot access matter
OpenAI says any public website can appear in ChatGPT Search, but publishers need to allow OAI-SearchBot for their content to be included in summaries and snippets. Search indexing still matters because live answers retrieve pages rather than relying only on model memory.
What tends to get selected
- Pages that directly answer the natural-language question.
- Current pages with a visible date or recent update signal.
- List and comparison pages that name multiple real options.
- Pages with original statistics, clear methodology, or quotable claims.
- Third-party pages that look less self-promotional than a vendor landing page.
How to improve your odds
- Make sure AI crawlers and search crawlers can fetch your pages.
- Publish a sitemap, allow OAI-SearchBot, and notify the search indexes you use after publishing.
- Publish pages that answer buyer questions in one sentence before going deep.
- Earn mentions on credible listicles, communities, podcasts, and newsletters.
- Track the actual answers, because retrieval behavior changes by provider and query.
FAQ
Does ChatGPT use Google?
OpenAI says ChatGPT Search uses third-party search providers as well as partner content, without naming one universal index for every answer. Measure the answers and keep OpenAI crawl access open.
Do citations guarantee recommendations?
No. A page can be cited without your brand being recommended, and a brand can be mentioned without a visible citation.
Can robots.txt block ChatGPT?
Yes. Blocking OAI-SearchBot can remove pages from ChatGPT search results. GPTBot is separate: it controls model-training use, not search visibility.
Sources
Primary and official references checked during the latest editorial review.