Yann LeCun, Meta’s chief AI scientist, and Joelle Pineau, VP of AI research and head of Meta’s FAIR (Fundamental AI Research) team, wanted to give Llama 2 a wide open-source release. Yann LeCun, Meta’s chief AI scientist, built Meta’s AI research around open-source work long before Llama launched. Bruised but undeterred, researchers at FAIR spent the winter fine-tuning a new family of generative AI models called LLaMA (short for Large Language Models Meta AI).