PaLM 2 is our next generation large language model that builds on Google's legacy of breakthrough research in machine learning and responsible AI. It excels at advanced reasoning tasks, including code and math, classification and question answering, translation and multilingual proficiency, and natural language generation better than our previous state-of-the-art LLMs, including PaLM. It can accomplish these tasks because of the way it was built, bringing together compute-optimal scaling, an improved dataset mixture, and model architecture improvements.