Tencent released Hy4 Preview, a new open-weight long-context multimodal/agentic frontier model in its Hy (Hunyuan) series
Model release Provisional 72% confidence first seen
Tencent launched the Hy4 Preview model in its Hy (Hunyuan) series, described as a frontier model aimed at long-horizon agentic tasks such as coding and document analysis. The release is reported as a 770B MoE model with a 1M context window and open-weight availability, with a chat template that includes a configurable reasoning effort. One source describes it as text-only, while another characterizes it as multimodal.