Tencent Unveils Hy4 Preview 770B MoE Architecture Targets Frontier AI Performance.
Tencent Hy Research Team Debuts Hy4 Preview: Flagship 770B-A49B Architecture Built for High-Density Agentic Workflows The Tencent Hy research team has officially released the preview version of its next-generation foundation model, Hy4 . Markedly shifting strategy from the smaller, budget-focused design of its predecessor, Hy3, Tencent’s new release enters the frontier class delivering benchmark performance on par with leading Chinese AI flagships including DeepSeek V4 Pro , Kimi K3 , GLM-5.3 , and Qwen3.8 Max . Built on a massive 770B-A49B Mixture-of-Experts (MoE) architecture , Hy4 dramatically expands parameter capacity while incorporating a native 1-Million Token Context Window . This extended memory capacity allows the model to maintain context across long-horizon reasoning tasks and handle complex multi-step technical execution without losing track of instructions. Despite the significant increase in parameter scale, Tencent has maintained a strong price-to-performance advantage...