AI glossary · Generative AI and LLMs
GPT
GPT (generative pre-trained transformer) is OpenAI’s family of large language models, and the technology behind ChatGPT.
Also called generative pre-trained transformer
In more detail
The name describes how the models work: they are generative (they create text), pre-trained on huge amounts of text before being adapted (see pre-training), and built on the transformer design.
OpenAI released the first GPT model in 2018 and has shipped many versions since. People sometimes use “GPT” loosely for any chatbot, but it is OpenAI’s model family.
Example
When you chat with ChatGPT, your messages are answered by one of OpenAI’s GPT models.
Related terms
ChatGPTChatGPT is OpenAI’s AI chatbot. You type or speak a request and it answers, writes, explains, analyses files or creates images.Large language model (LLM)A large language model (LLM) is an AI model trained on vast amounts of text to understand and generate language. It powers chatbots like ChatGPT.TransformerA transformer is the neural network design behind almost every modern language model. It reads a whole passage at once and works out how its words relate.Custom GPTA custom GPT is a version of ChatGPT set up for one purpose, with its own instructions, files and tools, that you can build without coding and share.
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