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This page gives information about Chaos Cosmos Browser in Revit.

For more information regarding Chaos Cosmos Content System, refer to Chaos Cosmos documentation.



Chaos Cosmos Content System delivers a 3D content library of high-quality 3D content selected from the rich V-Ray ecosystem. It allows V-Ray users, from their respective V-Ray products, to browse, place, and render 3D assets in their projects. The asset categories span across Furniture, Accessories, People, Vegetation, Vehicles, HDRIs, and more. In addition, the assets work seamlessly in the different Chaos renderers (V-Ray, V-Ray GPU, and Vision) and host apps (3Ds Max, Revit, Rhino, Sketchup, and more to come).





UI path

||VRayToolbar|| > Chaos Cosmos icon 


Chaos Cosmos Browser is part of the installation of V-Ray and does not require any other specific actions. You can access the downloadable content of the Chaos Cosmos Platform from within the host platform after the V-Ray installation is completed.


To start downloading content from Chaos Cosmos Browser, you have to sign in. Press the Sign in button at the top-right corner and enter your Chaos credentials.



Then, you can use the buttons at the top or use the search tab to find assets. If you press one of the buttons, you can additionally choose between different categories and filters for date, popularity, color, and space. The option to Show downloaded only is also available. The Navigation Bar, which is available on mouse hover on the browser's top frame, eases your navigation through the Chaos Cosmos pages. Note that when the page is reloaded, the navigation history is lost.




Once you choose an asset, you have to download it. Hover over it and click on the blue icon at the lower-right corner.



Another way to download an asset is to click on it. This reveals additional information. You can see the creator, the category/space/color of the asset, and other additional information. Note that you can see other connected assets by clicking on any of the additional information parameters.



Once the download is complete, a pop-up window will state that the asset is downloaded successfully. Use the Import button to bring the asset into the host platform and place it wherever you want in the scene.

Note that assets can be reused across different host platforms. They are saved locally at the following directoryC:\Users\[User]\Documents\Chaos Cosmos\Packages. The download storage can be configured.





Cosmos objects appear as native Revit families containing a lightweight geometric representation of the object. Depending on the object type itself, those families are either host-based or freestanding.

When a Cosmos asset is being imported during V-Ray Interactive rendering, the rendering is paused for the time of the import.



In V-Ray, the Cosmos objects appear under the Appearance Manager > Objects tab as part of the following categories: Entourage, Fixtures, Furniture, Lighting, Planting.  

You can modify the Cosmos assets from within the Objects tab.

Scale – Allows you to scale the Cosmos asset.

Rotation – Allows you to rotate the Cosmos asset around its vertical axis.

Randomize/Seed – Defines scale and rotation range (min/max) for the selected items to be randomized. Use the Refresh () button on the right to choose between random combinations. Use the Navigation history arrows () to switch back and forth between random combinations.


Similar to proxies workflow, the replacement of native Revit families with Cosmos objects is supported. For more information, refer to the Objects tab page.





When you download and import an HDRI, the light automatically changes to a Dome light, and the HDRI is assigned to it. You can see the preview of the HDRI in the V-Ray Lights window. For more information, refer to the V-Ray Dome Light page.




  • Revit models containing Chaos Cosmos assets can be rendered in V-Ray Vision.
  • Revit models containing Chaos Cosmos assets can be rendered in Chaos Cloud.
  • Revit models containing Chaos Cosmos assets can be exported as .vrscene files.
  • Chaos Cosmos assets can be used with LightMix.
  • At render time, Cosmos objects work as V-Ray proxies. For more information, refer to the Proxy Mesh page.