AI Search - Store larger custom metadata values in AI Search
UpdateUnverifiedAdded Sep 24, 2026
AI Search supports larger custom metadata values within a shared 10 KiB metadata envelope for each vector. The envelope includes AI Search system metadata and JSON overhead, so it is not a per-field limit. The first 64 UTF-8 bytes of each indexed string remain filterable. For details, refer to Metadata attributes .
Topics: Vector search
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