The LLaMA Herd
LLaMA The LLaMA series of open-source models released by Meta AI has become one of the cornerstones of the large language model community, profoundly impacting the advancement of open research and applications. From the pioneering LLaMA released in early 2023, to the significantly improved LLaMA 2 later that year, to derivative models targeting specific domains (like code, safety), and the subsequent new generations LLaMA 3 and LLaMA 4 launched in 2024 and 2025 respectively, Meta has continuously committed to enhancing the performance of open-source models, gradually bringing them closer to state-of-the-art closed-source models. Below, we will introduce the key technical details of each major model in sequence. ...