Translated data: The AI company Lingyi, under Li Kaifu, has released the new open-source model Yi-9B, the most powerful in the Yi series, with actual parameters of 8.8B and a default context length of 4K tokens. Yi-9B excels in tasks such as code writing and mathematical problem-solving, making it suitable for applications in the technical and academic fields. Additionally, Yi-9B demonstrates high accuracy and flexibility in understanding text, performing common-sense reasoning tasks, and reading comprehension. It has been optimized for both Chinese and English, enabling it to effectively process and understand bilingual text. With the use of quantization technology, Yi-9B can operate under lower hardware requirements, making deployment feasible.