Qwen2 is a series of pre-trained and instruction-tuned models that support up to 27 languages, including English and Chinese. These models have excelled in multiple benchmark tests, particularly demonstrating significant improvements in coding and mathematical capabilities. Qwen2 supports a context length of up to 128K tokens, making it suitable for handling long-text tasks. Moreover, the Qwen2-72B-Instruct model exhibits comparable safety performance to GPT-4, significantly outperforming the Mistral-8x22B model.