Should I drop an idea because AI research found something similar?
Finding something similar doesn't settle whether to stop or go on. Tyra Banks described discovering that someone else had already made an idea she had imagined, and that kind of discovery, disappointing as it is, gives you a sharper question to work on.
Look at the actual work: who it's for, what it promises and how it's delivered. Then sort out which part resembles your concept and which part doesn't.
Ask an AI assistant to organize the source material under those headings, with links you can open. Keep its interpretation separate from the evidence, and don't let it invent differences to make you feel better.
Then customers get a say
Next, work out what you need to learn from customers. Maybe the existing option already meets the need. It could also be that a group of people is poorly served, or that your idea needs a different delivery model while the message stays as it is.
A comparable idea doesn't by itself tell you to stop or to go ahead. Decide from the overlap, the customer need and what it would cost to test. Discouragement is a poor guide, and so is insisting yours is unique.