Tencent’s Hy4 is a strong open-weight model that brings open models back to the cost/accuracy frontier, with a notable game-development focus including adaptations for Unreal, Unity, and Godot and gains on GameDev and GameLogic benchmarks, while acknowledging gaps to top proprietary models in research math, long-horizon coding, and advanced visual QA. Tencent is also open-sourcing HyCell for single-cell representation and HyPDE for physical field modeling. In data analytics tests Hy4 is competitive and cheap but overly thorough and slow, running many queries per question.