KwaiYii large model (KwaiYii) is a series of large language models (LLMs) independently developed from scratch by the Kuaishou AI team, including pre-trained models and dialogue models. The KwaiYii-13B-Base pre-trained model has excellent general-purpose technology foundation capabilities, and the KwaiYii-13B-Chat dialogue model has outstanding language understanding and generation capabilities. Multiple authoritative Benchmark results show that KwaiYii-13B models have leading levels in various fields.