SilverwingVFX shows how to use the AgX color workflow in Octane to get that Filmic look.
You’ve likely used AgX Tonemapping if you used Blender. Blender’s Filmic look and color workflow does a more natural tone mapping than straight renders.
Here, SilverwingfVFX (Raphael Rau) shows how to use Filmic and AgX tone mapping with Octane and Cinema 4D and offers a comparison to working with ACES. AgX is a Display Rendering Transform initially written for OpenColorIO.