Tencent Hy4 Preview Officially Launches on B.AI API, Fully Open for Access

Odaily Planet Daily News – On September 2, the B.AI platform announced that Tencent's Hunyuan team’s latest open-source flagship model, Hy4 Preview, has officially launched API services and is fully open for developer access. As an early version of the Hy4 series, this model adopts a 770B sparse MoE architecture, activates 49B parameters per token, and supports a 1M ultra-long context window. It demonstrates professional-grade performance in scenarios such as software engineering agents, office data workflows, game development, and scientific research. Starting today, developers can directly call Hy4 Preview through the official B.AI API channel and visit chat.b.ai/chat for more details and immediate experience. In the future, B.AI will continue to introduce cutting-edge models to provide developers with more diverse and cost-effective AI computing power options.