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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, Cinema 4D, Revit, Rhino, Sketchup, Maya and more to come).




UI path

||Revit Ribbon|| > V-Ray tab > Assets panel > Chaos Cosmos


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 using the Chaos Cosmos Browser, you have to sign in. Press the Sign in button at the top-right corner and enter your Chaos credentials in the newly opened browser tab.




Then, you can use the buttons at the top or use the search tab to find assets.

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 category/space/color of the asset and other additional information.





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. 

Note that downloaded assets can be reused across different host platforms. They are saved locally at the following directory: C:\Users\[User]\Documents\Chaos Cosmos\Packages.






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 > Families tab > Cosmos tab as part of the following categories: Entourage, Fixtures, Furniture, Lighting, Planting.  

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

Scale – Scales the Cosmos asset.

Rotation – Rotates 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 Families 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.




When Chaos Cosmos assets are missing and need to be downloaded, the Appearance Manager toolbar icon appears with a warning dot indicator.

The same indicator appears on the Families tab and in the Search field, when opening the Appearance Manager. When you click on the  indicator in the Search field, it filters and displays only the missing assets that need to be downloaded. In such case, the regular filter and search cannot be used and are disabled.

The  download button starts downloading the missing asset. It works on both single and multiple selection. When downloading is triggered, a progress bar and percentage appear next to each item.






  • 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.

  • With V-Ray 5, update 1, users can share the same network folder to their downloaded Cosmos Assets. Assets downloaded by one user, show as downloaded to all users. Find more information at Configuring the Asset Download Directory.