How does ChatGPT pick the sources it cites?
What OpenAI documents about ChatGPT search, which crawler it uses, how to verify access, and what my own Observatory and benchmark data show.
Guides
How AI visibility works, drawing on official documentation, research and my own data.
Thematic guides
Why does a competitor appear more often than my brand in AI answers?
What engines document about how they pick sources, what research supports and under which condition, and how to measure the associated signals in a specific case.
What replaces rank tracking when an AI gives the answer?
Why position stops applying once the engine rewrites the query, what gets measured instead, and how to start measuring it in your own case.
Which external sites shape what AI cites about a brand?
What engines document about the sources they show, how citations split between a few domains and a very long tail, and how to measure which sites travel with a category's answers.