OpenDataLab is an open-source data platform that provides high-quality open datasets to support the training and application of large AI models. With a massive capacity, it includes over 5500 datasets covering 1500+ task types, totaling over 80TB of data and exceeding 1,064,500 downloads. The platform offers 30+ application scenarios, 20+ annotation types, and 5 data types. It supports unified standards for data structure, annotation format, and online visualization, enabling open data sharing and intelligent search. It provides structured data information and visualized annotations and data distribution, making it convenient for users to read and filter. The platform offers fast download services, allowing users to quickly download data from domestic cloud servers without using a VPN.