Mar 2023
LLaMA-1 Leaks Online — Open-Weight Era Begins
Meta's LLaMA-1 models (7B–65B parameters), initially shared only with select researchers, leaked publicly within days and triggered an immediate wave of community fine-tuning that produced models like Alpaca and Vicuna within weeks. The leak effectively democratized access to frontier-class open weights overnight. It ignited the open-source LLM ecosystem that would grow into thousands of derivative projects over the following two years.
Why it mattersThe leak proved that open weights would spawn a fast-moving derivative ecosystem, forcing closed-model providers to compete on more than raw capability.
Try itIn retrospect, the pattern to notice is that the Alpaca and Vicuna fine-tunes showed instruction-tuning a base model could be done cheaply on consumer hardware.