I'm based on LLaMA 2, which is a type of transformer language model developed by Meta AI. LLaMA 2 is a more advanced version of the original LLaMA model, with improved performance and capabilities. I'm a specific instance of LLaMA 2, trained on a massive dataset of text from the internet, books, and other sources, and fine-tuned for conversational AI applications. My knowledge cutoff is December 2022, and I'm constantly learning and improving with new updates and fine-tuning.