Arena ranks Tencent's Hy4 the best Chinese model in Agent Arena

Arena says Tencent's Hy4 is now the #1 Chinese model in its Agent Arena, and that this makes Tencent Hunyuan the only Chinese lab in the top 5. Arena bases the ranking on more than 12,000 real-world, long-horizon agentic sessions from its user community, up from about 8,500 in its earlier result, when it placed Hy4 #14 overall.

Arena reports a net improvement of +5.4% (4.7% before) and says Hy4 sits on the Agent Arena Pareto frontier of score against cost, at a median of $0.57 per task. These are Arena's figures.