Tencent Hy Releases Hy4 with Vision and Agent Arena Results

Key Info

Tencent Hy introduced Hy4, a new model adding vision capabilities and positioned among the leading open models. Agent Arena reports Hy4 landed #14 overall, with a +3.6 percentage point improvement over the Hy4 preview.

Highlights

• Hy4 adds vision support and is described as more productive across finance, frontend, game, office work, and research.
• Agent Arena evaluated Hy4 across 8.5K+ real-world long-horizon agentic sessions, showing a +4.7% net improvement.
• Hy4 costs about $0.55 per task, roughly 62% less than Kimi K3.1 Pro (Max) at $1.46 per task, with scores within 1 percentage point.
• Once weights are released, Hy4 is expected to tie Kimi K3.1 Pro for #1 among open models.
• The release emphasizes responsible development with cyber and biosecurity considerations.