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"Generative AI refers to deep-learning models that can generate high-quality text, images, and other content based on the data they were trained on...Generative models can also learn the grammar of software code, molecules, natural images, and a variety of other data types." (IBM, 2023)
"Large language models (LLMs) are a category of deep learning models trained on immense amounts of data, making them capable of understanding and generating natural language and other types of content to perform a wide range of tasks. LLMs are built on a type of neural network architecture called a transformer which excels at handling sequences of words and capturing patterns in text." (IBM, 2025)
"AI hallucination is a phenomenon where, in a large language model (LLM) often a generative AI chatbot or computer vision tool, perceives patterns or objects that are nonexistent or imperceptible to human observers, creating outputs that are nonsensical or altogether inaccurate." (IBM, n/a)