We present Open-Sora, an initiative dedicated to efficiently produce high-quality video and make the model, tools and contents accessible to all. By embracing open-source principles, Open-Sora not only democratizes access to advanced video generation techniques, but also offers a streamlined and user-friendly platform that simplifies the complexities of video production. With Open-Sora, we aim to inspire innovation, creativity, and inclusivity in the realm of content creation.

In this release, we have included

• source code for data processing
• source code for sora-like video generation training and inference pipeline
• system optimization powered by ColossalAI and flash attention
• model weights trained for 16×256×256 and 16×512x512 resolutions, available on Hugging Face