---
description: AI Search supports larger custom metadata values within a shared 10 KiB metadata envelope for each vector.
title: Store larger custom metadata values in AI Search
image: https://developers.cloudflare.com/changelog/post/2026-08-25-larger-custom-metadata-values/og.png?v=dea166db3c4e365a
---

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August 25, 2026

## Store larger custom metadata values in AI Search

[AI Search](https://developers.cloudflare.com/ai-search/)

Copy as Markdown| [View as Markdown](https://developers.cloudflare.com/changelog/post/2026-08-25-larger-custom-metadata-values/index.md)| [Agent setup](https://developers.cloudflare.com/agent-setup/)

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](https://developers.cloudflare.com/ai-search/configuration/indexing/metadata/).

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