> ## 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.

# 08.09.2025: Playground Support for GPT-5

> Available in Phoenix 11.21+

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  ![](https://storage.googleapis.com/arize-phoenix-assets/assets/images/phoenix-docs-images/gpt-5-release-notes.png)
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**GPT-5** is now available in the Phoenix Prompt Playground. Run experiments with the new model, or grab previous traces and replay them using GPT-5. Test and leverage the latest model for evaluation and experimentation workflows.

<Card title="feat(playground): support gpt-5 by axiomofjoy · Pull Request #8985 · Arize-ai/phoenix" icon="github" href="https://github.com/Arize-ai/phoenix/pull/8985" horizontal>
  GitHub
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