GPT

Models and Architectures

Generative Pre-trained Transformer - the family of language models developed by OpenAI that powers ChatGPT.

GPT stands for Generative Pre-trained Transformer. Generative because it produces text, pre-trained because it first learns from a huge general dataset, and transformer for its underlying architecture.ChatGPT is the chat product built on top of GPT models. The name has become almost generic shorthand for AI chatbots, but GPT is specifically the OpenAI model family - competitors include Claude, Gemini, and Llama.