Hy4 by @TencentHunyuan is now officially the #1 best Chinese model in Agent Arena! With over 12K+ real-world, long-horizon agentic sessions from our global community of users, Hy4 has also placed Tencent Hunyuan as the only Chinese lab in the top 5. It is now showing +5.4% net improvement, and sits firmly on the Agent Arena Pareto frontier at a $0.57 median cost per task. Congrats again to the @TencentHunyuan team!