Thesys Launches OpenUI 1.0 to Open Source AI Interface Generation

Thesys has released OpenUI 1.0, an open-source toolkit that allows AI agents to generate interactive visual interfaces in real time, replacing text-based chat responses. The framework supports custom actions that trigger native application code across models, including open-weight versions on private hardware, and a benchmark showed it used 58% fewer output tokens than Vercel's json-render and 52% fewer than Google's A2UI. The early open-source preview recorded over 6 million downloads and 10,000 GitHub stars in six months.