Wan 2.1 (from Alibaba/Tongyi) is one of the best open-source video generation models, offering an excellent balance between quality and cost. While Kling leads in absolute quality, Wan 2.1 delivers comparable results at approximately 7× lower cost — making it the smart choice for most video generation tasks.
The model handles both image-to-video and text-to-video generation with good quality motion, decent physics simulation, and natural-looking camera movements. It's particularly fast compared to other quality models, making it great for quick iterations and high-volume production.
Wan 2.1 is ideal when you need to generate many video variants to find the right one, want to experiment with different motion descriptions, or need a cost-effective solution for regular video content.