ChatGPT Search now uses the site: operator in ~16% of search queries after the GPT-5.6 update, shifting the rules for Generative Engine Optimization (GEO) and making domain-specific visibility more important.

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ChatGPT Search Now Uses site: Operator at Scale After GPT-5.6 Update

What's New in ChatGPT Search?

FAQ

What is the site: operator in ChatGPT Search?

It's a search operator that restricts results to a specific domain, now used more broadly by ChatGPT to improve answer precision.

How does this affect traditional SEO?

It elevates the importance of GEO alongside SEO, as sites need to optimize for targeted queries and domain-specific visibility.

Should MENA companies adapt to this change?

Yes, especially those relying on search traffic, as it may shift referral patterns from traditional engines to AI tools.

Source: Simon Willison (LLM & tools)

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