Llama 2 70B is a state-of-the-art generative text model developed by Meta, featuring 70 billion parameters and optimized for dialogue applications. It utilizes an advanced transformer architecture and has been fine-tuned using supervised learning and RLHF. Pretrained on 2 trillion tokens from diverse public sources, it outperforms many open-source chat models and competes with popular closed-source models in terms of helpfulness and safety. The model is designed for commercial and research applications in English, focusing on assistant-like chat functionalities. It accepts text input and generates text output, making it suitable for various natural language processing tasks .