AI Models & Launches — June 21, 2026

This Sunday morning, a new open-source AI model from China is shaking up the global tech scene, as multiple reports confirm a major shift in the AI landscape. Z.AI's GLM 5.2, an open-source model, is drawing widespread praise from Western tech leaders. Both OfficeChai and Business Insider highlight Vercel CEO Guillermo Rauch's "genuinely impressed" reaction, stating "This changes things." Box CEO Aaron Levie calls the progress "remarkable," while Mat Velloso, formerly of Meta and Google DeepMin