Large language models are algorithms designed to understand, generate, and manipulate human language. State-of-the-art large language models include OpenAI’s GPT-4o, Anthropic Claude Sonnet 3.5, and Meta LLaMA 3.1. They are built using neural networks with billions or even trillions of parameters. They are trained on vast datasets that can include text from the internet, books, code, and other information sources.