Open-Sora: Democratizing Efficient Video Production for All
We design and implement Open-Sora, an initiative dedicated to efficiently producing high-quality video. We hope to make the model,
tools and all details 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 generation.
With Open-Sora, our goal is to foster innovation, creativity, and inclusivity within the field of content creation.
🎬 For a professional AI video-generation product, try Video Ocean — powered by a superior model.
📰 News
- [2025.03.12] 🔥 We released Open-Sora 2.0 (11B). 🎬 11B model achieves on-par performance with 11B HunyuanVideo & 30B Step-Video on 📐VBench & 📊Human Preference. 🛠️ Fully open-source: checkpoints and training codes for training with only $200K. [report]
- [2025.02.20] 🔥 We released Open-Sora 1.3 (1B). With the upgraded VAE and Transformer architecture, the quality of our generated videos has been greatly improved 🚀. [checkpoints] [report] [demo]
- [2024.12.23] The development cost of video generation models has saved by 50%! Open-source solutions are now available with H200 GPU vouchers. [blog] [code] [vouchers]
- [2024.06.17] We released Open-Sora 1.2, which includes 3D-VAE, rectified flow, and score condition. The video quality is greatly improved. [checkpoints] [report] [arxiv]
- [2024.04.25] 🤗 We released the Gradio demo for Open-Sora on Hugging Face Spaces.
- [2024.04.25] We released Open-Sora 1.1, which supports 2s~15s, 144p to 720p, any aspect ratio text-to-image, text-to-video, image-to-video, video-to-video, infinite time generation. In addition, a full video processing pipeline is released. [checkpoints] [report]
- [2024.03.18] We released Open-Sora 1.0, a fully open-source project for video generation.
Open-Sora 1.0 supports a full pipeline of video data preprocessing, training with
acceleration,
inference, and more. Our model can produce 2s 512x512 videos with only 3 days training. [checkpoints]
[blog] [report]
- [2024.03.04] Open-Sora provides training with 46% cost reduction.
[blog]
📍 Since Open-Sora is under active development, we remain different branches for different versions. The latest version is main. Old versions include: v1.0, v1.1, v1.2, v1.3.
🎥 Latest Demo
Demos are presented in compressed GIF format for convenience. For original quality samples and their corresponding prompts, please visit our Gallery.
| 5s 1024×576 |
5s 576×1024 |
5s 576×1024 |
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OpenSora 1.3 Demo
| 5s 720×1280 |
5s 720×1280 |
5s 720×1280 |
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OpenSora 1.2 Demo
| 4s 720×1280 |
4s 720×1280 |
4s 720×1280 |
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OpenSora 1.1 Demo
| 2s 426×240 |
4s 480×854 |
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| 16s 320×320 |
16s 224×448 |
2s 426×240 |
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OpenSora 1.0 Demo
| 2s 512×512 | 2s 512×512