OpenAI has introduced several iterations of the Generative Pre-trained Transformer (GPT) model. The following can be distinguished among them:
GPT-1: the original model, which laid the foundation for subsequent versions.
GPT-2: a significant enhancement known for its impressive text generation capabilities.
GPT-3: is a pioneering model that sets new standards in language understanding and generation.
GPT-3.5: an improved version that continues to expand the capabilities of the language.
GPT-4: a multimodal large language model, the fourth in the GPT series