Meta has released the Llama 2-Long model, which maintains exceptional performance without increasing computational demands when processing long texts. The model's enhanced performance is attributed to innovative strategies, including continuous pre-training, improved positional encoding, and data blending, rather than relying on more long-text data. Llama 2-Long excels in both short and long tasks, surpassing GPT-3.5, and has the potential to revolutionize the field of natural language processing. Its instruction tuning method has also been optimized, performing exceptionally well in long-context tasks. This release represents a significant milestone in the field of natural language processing, providing a robust solution for handling long texts and injecting new vitality into the field.