Hello,

During the beta you can use Unreal with any license. After the beta Octane for Unreal Engine will use the same licencing rules as the other plugins. Octane for Unreal will have a free (prime) version though.

Could you please explain the difference between the free tier octane and the paid ...

Hello,

you first have to apply to the free tier offer: https://render.otoy.com/shop/prime.php?

best regards