HI Paride,
there seems to be a bug with AI Lights during rendering. When octane viewport is opened AI lights work. But when rendering it's like AI light engine is not being used. is anything else needs to be enabled? Thanks
UPDATE:
there is more to the problem. During regular rendering when AI is ON you can see lights are a little bit brighter compared to when ai is OFF (so there is a difference) However Octane viewport has even brighter and better looking lights. I attached three images. Not sure what is going on.