> ## 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.

# 08.28.2025: New arize-phoenix-client Package

> We’re excited to announce the release of **`arize-phoenix-client`**, a lightweight, fully-featured package for interacting with Phoenix. With this client, you no longer need to install `arize-phoenix` unless running a local instance.

<Update label="08.28.2025">
  **Key Features:**

  * **Datasets:** Create and manage datasets for experimentation.
  * **Experiments:** Run experiments and evaluate model performance.
  * **Prompts:** Manage prompt templates and their versions.
  * **Spans:** Access and analyze traces and spans.
  * **Annotations:** Add annotations, evaluations, and feedback to spans.
  * **Projects:** Organize your work with project management tools.

  This release provides first-class support for interacting with a Phoenix instance while keeping your environment light and simple.

  ### Documentation

  <Card horizontal title="Phoenix Client Reference — Phoenix Client Reference 1.21.0 documentation" href="https://pypi.org/project/arize-phoenix-client/" icon="cube" horizontal>
    arize-phoenix.readthedocs.io
  </Card>

  <Frame>
    <iframe src="https://cdn.iframe.ly/WV8gKiCy?app=1" allowfullscreen="" style={{ width: '100%', height: '700px' }} />
  </Frame>
</Update>