Write what people will retell

"It's really good" or "it's faster than X" goes nowhere. "This AI is great for one specific kind of video" travels, because it carries a use and a picture.

Our test is simple. Walk someone who knows nothing about the product through it, then ask how they'd describe it to a friend. If they can say it in one plain, concrete sentence, you're fine for now. If all they manage is "it's pretty cool," the message isn't clear yet.