> ## Documentation index
> Fetch the complete documentation index at: https://arize.com/llms.txt
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> Use these to discover all available pages before exploring further.

# 07.13.2025: Experiments module in phoenix-client

> Available in Phoenix 11.7+

<Update label="07.13.2025">

## Experiments Module in phoenix-client

<Card title="arize-phoenix-client" href="https://pypi.org/project/arize-phoenix-client/" icon="cube" horizontal>
  PyPI
</Card>

**New Features in Phoenix 11.7+:**

* Added a new `experiments` property to both `Client` and `AsyncClient` for invoking experiment workflows.

* Introduced `Experiments` and `AsyncExperiments` classes with `run_experiment` methods supporting **tasks**, **evaluators**, **dry-run mode**, and **metadata**.

* Implemented `SyncExecutor` and `AsyncExecutor` classes for **concurrent execution** with built-in **progress bars**.

* Added `RateLimiter` and `AdaptiveTokenBucket` for intelligent handling and throttling of **rate-limit errors**.

**Bug Fixes:**

* Fixed a typo in the `datasets.get_dataset_versions` docstring.

**Enhancements:**

* Introduced a `PhoenixException` base class and **refactored exception imports** for consistency.

* Simplified rate limiter output by replacing `printif` with direct print statements.

</Update>