AI Glossary
GPT (Generative Pre-trained Transformer)
What is GPT (Generative Pre-trained Transformer)?
The architecture and model family developed by OpenAI. 'Generative' refers to the model's ability to produce new text; 'pre-trained' means trained on a large corpus before fine-tuning; 'transformer' is the underlying neural network architecture. GPT models (GPT-3, GPT-4, GPT-4o) are the foundation for ChatGPT and the OpenAI API.
Example in practice
A developer who builds a custom enterprise chatbot using the OpenAI API is using a GPT model programmatically — accessing the same underlying model as ChatGPT but controlling the application layer entirely.
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