LLaMA: Open and Efficient Foundation Language Models
Meta · · Open weights
Meta released LLaMA (7B–65B parameters), trained exclusively on publicly available data. The weights were initially gated behind a researcher application form and leaked on March 3, 2023, igniting the open-weights fine-tuning ecosystem.
Why it matters
Proved that models trained on public data could match proprietary giants. The accidental leak created the open-weights fine-tuning ecosystem — Alpaca, Vicuna, Mistral, and the entire open-source LLM movement descend from this release.
This is LLM World's historical reading, not a claim by Meta. The facts above and the sources below are what it rests on.
Model line behind it: Llama.
Sources
Record status: verified · confidence 90/100
Meta's own blog post, dated February 24, 2023. The arXiv paper was submitted three days later on February 27. ai.meta.com blocks automated fetches.
- ai.meta.com Official announcement archived
- arxiv.org Official documentation archived