These two expressions are similar, but they aren't always interchangeable. Have you heard of...? → asks whether someone is familiar with or aware of a person, place, thing, or concept. - Have you heard of ChatGPT? - I've never heard of that band. Have you heard about...? → asks whether someone knows about a specific piece of news, event, or situation. - Have you heard about the earthquake? - Did you hear about the projects we're working on? That said, I sometimes hear native speakers use "heard about" where I would have expected "heard of," especially in casual conversation. Do you feel there's a clear distinction in everyday English, or has the line become a bit blurry? Are there situations where you naturally prefer one over the other? I'd love to hear your thoughts and any examples you've come across.