Wanxiang Wan 2.1 - An open-source AI video generation model by Alibaba Cloud

## Definition of Wan2.1 **Wanxiang Wan 2.1** is an open-source AI video generation model developed by Alibaba Cloud. It is designed to generate high-quality videos from text or image prompts, supporting both text-to-video (T2V) and image-to-video (I2V) functionalities. The model is part of Alibaba Cloud's Tongyi Wanxiang series and was released in February 2025. It is available for academic research, commercial use, and content creation. ## Unique Features of Wan2.1 **Key features of Wanxiang Wan 2.1 include:** - **Input Flexibility:** Supports text and image inputs, with T2V variants generating videos from text prompts and I2V variants extending images into videos. - **Performance:** Achieved a score of 86.22% in the VBench benchmark, ranking among the top open-source video generation models. - **Computational Efficiency:** The T2V-1.3B variant can generate a 5-second 480p video in approximately 4 minutes on a standard laptop. - **Multilingual Support:** Compatible with both Chinese and English text effects, enhancing creative diversity. - **Technical Innovation:** Utilizes advanced diffusion architecture and 3D causal VAE encoding for high-quality output. ## Variants of Wanxiang Wan 2.1 **Wanxiang Wan 2.1 has four main variants:** - **T2V-14B:** 1.4 billion parameters, optimized for high-dynamic motion and complex scenes. - **T2V-1.3B:** 130 million parameters, balancing quality and computational efficiency. - **I2V-14B-720P:** 1.4 billion parameters, supporting high-definition (720p) video output from images. - **I2V-14B-480P:** 1.4 billion parameters, standard resolution, accepts arbitrary image sizes. ## Unique Features of Wan2.1 **Wanxiang Wan 2.1 scored 86.22% in the VBench benchmark**, making it one of the top-performing open-source video generation models. It excels in dynamic motion, spatial relationships, color consistency, and multi-object interaction. ## Download Sources for Wanxiang Wan 2.1 **Wanxiang Wan 2.1 is available for download on:** - [Alibaba Cloud AI Model Community](https://tongyi.aliyun.com/wanxiang/creation) - Hugging Face platform. ## Applications of Wanxiang Wan 2.1 **Potential applications include:** - Marketing videos. - Educational content. - Game animations. - Multilingual content creation. - High-dynamic motion scenes. ## Computational Requirements for Wanxiang Wan 2.1 **For the T2V-1.3B variant:** - Generates a 5-second 480p video in approximately 4 minutes on a standard laptop. - Suitable for resource-limited scenarios. ## Unique Features of Wan2.1 **Unique aspects include:** - First open-source video generation model supporting both Chinese and English text effects. - High performance in VBench benchmarks. - Multiple variants tailored for different use cases. - Advanced diffusion architecture and 3D causal VAE encoding for high-quality output. ### Citation sources: - [Wanxiang Wan 2.1](https://tongyi.aliyun.com/wanxiang/creation) - Official URL Updated: 2025-04-01