> ## Documentation Index
> Fetch the complete documentation index at: https://arizeai-433a7140.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# 10.30.2025: Metadata Support for Experiment Run Annotations

> Available in Phoenix 12.9+

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  <img src="https://storage.googleapis.com/arize-phoenix-assets/assets/images/releasenotes-10-30.png" alt="releasenotes 10 30" />
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Added **metadata support for experiment run annotations**, with GraphQL updates to fetch and expose this information. The annotation details view now displays formatted JSON metadata across both **compare** and **example** views for easier inspection and debugging.

<Card title="Pull Request #9904" href="https://github.com/Arize-ai/phoenix/pull/9904" icon="github" horizontal>
  GitHub
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