Tencent open-sources Hunyuan Hy4: 770B MoE with 1M context
TencentHunyuan · x · 2026-08-30
Tencent has open-sourced Hunyuan Hy4 preview under Apache 2.0. The flagship MoE model features 770B total parameters (49B active), 1M context window, and a native MTP layer for speculative decoding. In blind evaluations by 163 internal experts across 203 real engineering tasks, Hy4 scored 2.99, edging out GLM 5.3 (2.92) and Kimi K3 (2.94). It was trained on real production workflows including software engineering, data analysis, and research.
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