Merriam Webster: Generative AI (noun)
variants or less commonly generative artificial intelligence :
"artificial intelligence (see ARTIFICIAL INTELLIGENCE sense 2) that is capable of generating new content (such as images or text) in response to a submitted prompt (such as a query) by learning from a large reference database of examples."
"Generative AI (genAI) is a broad label describing any type of artificial intelligence (AI) that can produce new text, images, video, or audio clips. Technically, this type of AI learns patterns from training data and generates new, unique outputs with the same statistical properties."