[Tencent Hunyuan Open Source Hy4 Preview: 770B Parameters, 1M Context Length] According to Deep Tide TechFlow, on August 28, Tencent Hunyuan released its new flagship model, Hy4 Preview. As introduced on Tencent Hunyuan's official WeChat account, Hy4 Preview features a total of 770B parameters, 49B active parameters, and a context length of 1M. The model is now open source and available on Tencent Cloud TokenHub and OpenRouter. The official WeChat account also disclosed the above parameters and announced the open-source release of Hy4 Preview. This open-source release is available on both Tencent Cloud TokenHub and OpenRouter platforms.