All modelsMODEL / FRONTIER COVERAGEHy4 PreviewTYPEModelSIGNALS3FIRST SEENAug 29, 2026LAST SEENNov 4, 2026ALSO KNOWN ASHy4Recent signalsTencent releases its Hy4 open-weight foundation model, which it says joins the top tier of Chinese open-weight AI for the first time, and plans a Flash version (Bloomberg) Nov 4, 2026Introducing Hy4 Preview Aug 29, 2026Tencent releases Hy4 Preview, a 770B-parameter open model with a 1M context window, and says it narrowly beat GLM-5.3 and Kimi K3 in internal engineering tests Aug 29, 2026RELATEDOpen-weight modelsTencentHugging FaceKimi K3GLM-5.3ALL MODELSLATEST SIGNAL