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

# 11.29.2025: Add support for Claude Opus 4-5

> Available in Phoenix 12.18+

<Frame>
  <img src="https://storage.googleapis.com/arize-phoenix-assets/assets/images/claude-opus-4-5-support.png" alt="Claude Opus 4-5 support" />
</Frame>

With this update, you can use Claude Opus 4 or Claude Opus 4-5 directly in the Playground — giving you access to Anthropic's latest models alongside existing providers.