Open-Sora
AI videoOpen-Sora is an open-source video generation project initiated by hpcaitech, with the goal of making high-quality video generation efficient and accessible to everyone. The project follows open-source principles, publicly disclosing models, tools, and implementation details, and provides a complete pipeline from video data preprocessing and accelerated training to inference generation. Multiple versions have been released so far: Open-Sora 1.0 (2024.03.18), 1.1 (2024.04.25), 1.2 (2024.06.17), 1.3 (1B, 2025.02.20), and Open-Sora 2.0 (11B, 2025.03.12). According to official statements, the 11B model of Open-Sora 2.0 performs comparably to 11B HunyuanVideo and 30B Step-Video on VBench and human preference evaluations, and is an open-source solution with publicly available checkpoints and training code. The model supports text-to-video and image-to-video generation, and the 11B model supports 256px and 768px resolutions. The project also provides step-by-step guidance for model training and fine-tuning, video autoencoder training and evaluation, and offers a Gradio demo.