> For the complete documentation index, see [llms.txt](https://developer.harness.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.harness.io/resilience-testing/chaos-engineering/use-chaos-engineering/chaoshub.md).

# ChaosHubs

{% hint style="info" %}
**CHAOS STUDIO VERSIONS**

This guide covers ChaosHub for both **Old Chaos Studio** and **New Chaos Studio**. Use the selector below to choose your version:

* **Old Chaos Studio**: For existing customers using the current version
* **New Chaos Studio**: Enhanced experience with new features and improved UI

If you're an existing customer interested in accessing New Chaos Studio features, contact your Harness support representative. For more details, see [New Chaos Studio Features](/resilience-testing/chaos-engineering/readme.md#new-chaos-studio-features).
{% endhint %}

{% @harness-package-selector/package-selector platforms="%5B%7B%22label%22%3A%22Old%20Chaos%20Studio%22%2C%22slug%22%3A%22old-chaos-studio%22%2C%22path%22%3A%22chaos-engineering%2Fuse-chaos-engineering%2Fchaoshub%2Fold-chaos-studio-chaoshub%22%7D%2C%7B%22label%22%3A%22New%20Chaos%20Studio%22%2C%22slug%22%3A%22new-chaos-studio%22%2C%22path%22%3A%22chaos-engineering%2Fuse-chaos-engineering%2Fchaoshub%2Fnew-chaos-studio-chaoshub%22%7D%5D" %}