https://techcrunch.com/2023/05/11/meta-announces-generative-ai-features-for-advertisers/

Meta today announced an AI Sandbox for advertisers to help them create alternative copies, background generation through text prompts and image cropping for Facebook or Instagram ads.

The first feature lets brands generate different variations of the same copy for different audiences while trying to keep the core message of the ad similar. The background generation feature makes it easier to create different assets for a campaign. Finally, the image cropping feature helps companies create visuals in different aspect ratios for various mediums, such as social posts, stories, or short videos like Reels.