Tencent says Hy4, its latest large language model, places among leading open-source models; it plans to release the weights and system cards in the coming days. The model adds visual understanding and computer use, including interaction with command-line and graphical interfaces, and is designed for image and chart analysis, mathematical reasoning, and extended tasks in tools such as Blender and CAD software. Tencent reports an average score of 83.18 and a 96.15% pass rate on WorkBuddy evaluations, where Hy4 ranked first in nine of 12 scenarios. Integrated with WeCom, it can draw on chats, documents, calendars, and meetings to track projects and flag follow-ups. In a blind assessment of 579 practical financial tasks by 213 professionals, Hy4 scored 3.04, ahead of the compared open-source models. Tencent also reports lower hallucination and unsupported-assumption rates than for Hy4 Preview.
The model is further positioned for software and game development, scientific research, and workplace analysis. It improved on Hy4 Preview by 19.1% on a GameDev benchmark and 9.8% on GameLogic; a separate research evaluation covered 123 tasks across seven disciplines. Tencent says it has built cybersecurity and biosafety safeguards into development, excluding offensive exploitation material from cybersecurity training and conducting expert security reviews. Hy4 is available through Tencent services and several third-party platforms, with integration planned for more products. Its listed prices remain $0.90 per million input tokens and $2.70 per million output tokens; a lower-cost Hy4 Flash is planned. WorkBuddy and CodeBuddy are free from November 4-15, and Hy4 receives a 50% Tencent Cloud discount through December 31, 2026.
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