What language is ChatGPT programmed in?

ChatGPT is programmed in Python, a popular high-level programming language that is widely used for machine learning and natural language processing tasks. Specifically, the code for ChatGPT is built using deep learning frameworks such as PyTorch and TensorFlow, which provide a high-level interface for building and training deep neural networks. These frameworks allow developers to easily build and customize the architecture of the model, train it on large-scale datasets, and fine-tune it for specific natural language processing tasks.