On which level of a Reddit campaign are the ad creative and copy set?

The ad creative and copy are set at the Ad level of a Reddit campaign. Each Ad represents a specific advertisement that will be shown to users, and it's at this granular level that you define the visual content (image or video), headline, and body text that comprise the ad itself. The Campaign level defines the overall goal and budget. The Objective level is part of the campaign setup, determining the campaign's primary purpose (e.g., traffic, conversions). The Ad Group level organizes multiple ads and allows for targeting and bidding strategies to be applied to a set of ads. While Ad Groups determine who sees the ads and how much is spent, the Ad level is where the actual message and appearance of the advertisement are created.