SkyReels V2 Review — Kunlun's Open-Source Video Model: Diffusion Forcing, Infinite-Length Generation, and the Highest Open-Source I2V Score

SkyReels V2 (Skywork AI / Kunlun Wanwei, April 2025) is the highest-performing open-source image-to-video model at launch, scoring 3.29 on human evaluation — approaching Kling 1.6 (3.40) and Runway Gen-4 (3.39). Its Diffusion Forcing framework enables theoretically unlimited-length video. Built on Wan2.1 DiT, available in 1.3B (~14.7GB VRAM) and 14B (~51GB VRAM). Custom commercial-friendly license. No MCP server. Rating 4/5.