LlamaMeta's open family of large language models — released weights that sparked an open-source AI wave. 2 let startups and researchers run capable LLMs on their own hardware without OpenAIAn AI research company — created GPT, ChatGPT, DALL-E, and the o-series reasoning models. APIApplication programming interface — a defined way for programs to talk to each other or to a service. bills. It spawned fine-tuningAdapting a pre-trained model to a specific task with additional training on a smaller dataset. ecosystems (Hugging Face, Ollama, vLLM) and proved open weights could approach closed-model quality.

LlamaMeta's open family of large language models — released weights that sparked an open-source AI wave. 2 was the open-weights inflection point for self-hosted AI.

Commercial licensing of strong open models changed who could ship LLMLarge language model — a neural network trained on vast text to generate and reason about language. products.