Baichuan2-192K introduces the world's largest context window large model with a capacity for inputting over 350,000 Chinese characters, exceeding Claude2. Not only does Baichuan2-192K surpass Claude2 in terms of the length of the context window, but it also leads the field in long window text generation quality, long context comprehension, long text Q&A, and summary generation. Baichuan2-192K has achieved a balance between window length and model performance through optimal algorithms and engineering, achieving simultaneous enhancements in both. The Baichuan2-192K API has been released, providing enterprise users with access, and has already been applied in industries such as law, media, and finance.