Open-Sora: Democratizing Efficient Video Production for All
## 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](https://video-ocean.com/) — powered by a superior model. ## 📰 News - **[2025.03.12]** 🔥 We released **Open-Sora 2.0** (11B). 🎬 11B model achieves [on-par performance](#evaluation) with 11B HunyuanVideo & 30B Step-Video on 📐VBench & 📊Human Preference. 🛠️ Fully open-source: checkpoints and training codes for training with only **$200K**. [[report]](https://arxiv.org/abs/2503.09642v1) - **[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]](#open-sora-13-model-weights) [[report]](/docs/report_04.md) [[demo]](https://huggingface.co/spaces/hpcai-tech/open-sora) - **[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]](https://company.hpc-ai.com/blog/the-development-cost-of-video-generation-models-has-saved-by-50-open-source-solutions-are-now-available-with-h200-gpu-vouchers) [[code]](https://github.com/hpcaitech/Open-Sora/blob/main/scripts/train.py) [[vouchers]](https://colossalai.org/zh-Hans/docs/get_started/bonus/) - **[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]](#open-sora-12-model-weights) [[report]](/docs/report_03.md) [[arxiv]](https://arxiv.org/abs/2412.20404) - **[2024.04.25]** 🤗 We released the [Gradio demo for Open-Sora](https://huggingface.co/spaces/hpcai-tech/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]](#open-sora-11-model-weights) [[report]](/docs/report_02.md) - **[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]](#open-sora-10-model-weights) [[blog]](https://hpc-ai.com/blog/open-sora-v1.0) [[report]](/docs/report_01.md) - **[2024.03.04]** Open-Sora provides training with 46% cost reduction. [[blog]](https://hpc-ai.com/blog/open-sora) 📍 Since Open-Sora is under active development, we remain different branches for different versions. The latest version is [main](https://github.com/hpcaitech/Open-Sora). Old versions include: [v1.0](https://github.com/hpcaitech/Open-Sora/tree/opensora/v1.0), [v1.1](https://github.com/hpcaitech/Open-Sora/tree/opensora/v1.1), [v1.2](https://github.com/hpcaitech/Open-Sora/tree/opensora/v1.2), [v1.3](https://github.com/hpcaitech/Open-Sora/tree/opensora/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](https://hpcaitech.github.io/Open-Sora/). | **5s 1024×576** | **5s 576×1024** | **5s 576×1024** | | -------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------- | | [](https://streamable.com/e/8g9y9h?autoplay=1) | [](https://streamable.com/e/k50mnv?autoplay=1) | [](https://streamable.com/e/bzrn9n?autoplay=1) | | [](https://streamable.com/e/dsv8da?autoplay=1) | [](https://streamable.com/e/3wif07?autoplay=1) | [](https://streamable.com/e/us2w7h?autoplay=1) | | [](https://streamable.com/e/yfwk8i?autoplay=1) | [](https://streamable.com/e/jgjil0?autoplay=1) | [](https://streamable.com/e/lsoai1?autoplay=1) | OpenSora 1.3 Demo | **5s 720×1280** | **5s 720×1280** | **5s 720×1280** | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [](https://streamable.com/e/r0imrp?quality=highest&autoplay=1) | [](https://streamable.com/e/hfvjkh?quality=highest&autoplay=1) | [](https://streamable.com/e/kutmma?quality=highest&autoplay=1) | | [](https://streamable.com/e/osn1la?quality=highest&autoplay=1) | [](https://streamable.com/e/l1pzws?quality=highest&autoplay=1) | [](https://streamable.com/e/2vqari?quality=highest&autoplay=1) | | [](https://streamable.com/e/1in7d6?quality=highest&autoplay=1) | [](https://streamable.com/e/e9bi4o?quality=highest&autoplay=1) | [](https://streamable.com/e/09z7xi?quality=highest&autoplay=1) | | [](https://streamable.com/e/16c3hk?quality=highest&autoplay=1) | [](https://streamable.com/e/wi250w?quality=highest&autoplay=1) | [](https://streamable.com/e/vw5b64?quality=highest&autoplay=1) | OpenSora 1.2 Demo | **4s 720×1280** | **4s 720×1280** | **4s 720×1280** | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [](https://github.com/hpcaitech/Open-Sora/assets/99191637/7895aab6-ed23-488c-8486-091480c26327) | [](https://github.com/hpcaitech/Open-Sora/assets/99191637/20f07c7b-182b-4562-bbee-f1df74c86c9a) | [](https://github.com/hpcaitech/Open-Sora/assets/99191637/3d897e0d-dc21-453a-b911-b3bda838acc2) | | [](https://github.com/hpcaitech/Open-Sora/assets/99191637/644bf938-96ce-44aa-b797-b3c0b513d64c) | [](https://github.com/hpcaitech/Open-Sora/assets/99191637/272d88ac-4b4a-484d-a665-8d07431671d0) | [](https://github.com/hpcaitech/Open-Sora/assets/99191637/ebbac621-c34e-4bb4-9543-1c34f8989764) | | [](https://github.com/hpcaitech/Open-Sora/assets/99191637/a1e3a1a3-4abd-45f5-8df2-6cced69da4ca) | [](https://github.com/hpcaitech/Open-Sora/assets/99191637/d6ce9c13-28e1-4dff-9644-cc01f5f11926) | [](https://github.com/hpcaitech/Open-Sora/assets/99191637/561978f8-f1b0-4f4d-ae7b-45bec9001b4a) | OpenSora 1.1 Demo | **2s 240×426** | **2s 240×426** | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [](https://github.com/hpcaitech/Open-Sora-dev/assets/99191637/c31ebc52-de39-4a4e-9b1e-9211d45e05b2) | [](https://github.com/hpcaitech/Open-Sora-dev/assets/99191637/c31ebc52-de39-4a4e-9b1e-9211d45e05b2) | | [](https://github.com/hpcaitech/Open-Sora-dev/assets/99191637/f7ce4aaa-528f-40a8-be7a-72e61eaacbbd) | [](https://github.com/hpcaitech/Open-Sora-dev/assets/99191637/5d58d71e-1fda-4d90-9ad3-5f2f7b75c6a9) | | **2s 426×240** | **4s 480×854** | | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [](https://github.com/hpcaitech/Open-Sora-dev/assets/99191637/34ecb4a0-4eef-4286-ad4c-8e3a87e5a9fd) | [](https://github.com/hpcaitech/Open-Sora-dev/assets/99191637/c1619333-25d7-42ba-a91c-18dbc1870b18) | | **16s 320×320** | **16s 224×448**