CogVideoX Review — Zhipu AI's Open-Source Video DiT: ICLR 2025, 12,700 GitHub Stars, Expert Transformer Architecture

CogVideoX launched August 2024 as the first commercial-grade open-source video generation model competitive with Kling and Gen-2 at launch. Built on a novel Expert Transformer with 3D Full Attention and a 3D Causal VAE, the model earned acceptance at ICLR 2025. CogVideoX1.5 (November 2024) pushed resolution to 1360×768 and duration to 10 seconds. 12,700 GitHub stars, 36,000+ monthly HuggingFace downloads, and 100+ active Spaces. No official MCP server. Rating 4/5.