WebUniverse

WebUniverse is a data and environment synthesis pipeline for agentic web development. It turns open-source repositories and real web pages into reusable task environments and verified development trajectories, covering text-grounded application development and vision-grounded webpage reproduction. The release includes 15,000 trajectories, 15,000 task environments, and two model checkpoints based on Qwen3.5-35B-A3B.