Query fan-out for AI Mode: The Complete 2026 Guide

Query fan-out is a search architecture pattern. It sends one user query to multiple retrieval systems simultaneously. Each system returns results. The...

Dilshad Akhtar
Dilshad Akhtar
Published: 24 July 2026
3 min read
TL;DRAI summary
  • Query fan-out is a search architecture pattern.

Query fan-out is a search architecture pattern. It sends one user query to multiple retrieval systems simultaneously. Each system returns results. The results are merged and ranked. This pattern powers AI Mode in modern search engines. What is query fan-out? A single user query goes to multiple...

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