What is your best and highly recommended AI Subreddit?

I am exploring AI and looking for the best and most recommended AI Subreddits to follow. I am interested in learning, staying updated, and joining active discussions regarding AI. I am also looking to share AI-generated images/videos with the community. In future, I also want to promote/market my AI tool in front of a large Reddit audience.

Please suggest Subreddits that are beginner-friendly, informative, and have a good community. Any niche AI topics are welcome too. Thanks in advance!