Pretrained Model
A pretrained model is an AI system that has already been trained on a large dataset before you use it. Instead of starting from scratch, you begin with a model that already understands a lot about language, images, or other data types. You can then fine-tune or adapt it to your specific needs with a smaller set of new data.
Using pretrained models saves time, computing power, and resources. For example, GPT-4 is a pretrained model that has learned from a wide range of internet text, so it can answer questions, write essays, or help with coding without needing to be trained again for each task.