Tencent announced Hy4 on Nov. 4, describing it as the next generation of its Hunyuan model. The company says this release adds visual understanding for the first time in the Hy4 line, alongside improvements to instruction following, long-context comprehension and tasks that require an agent to work through multiple steps.
The most concrete additions are image, chart and mathematical-visual analysis, plus computer use through both command-line and graphical interfaces. Tencent says it trained Hy4 on professional software such as Blender and CAD to help it plan and carry out longer workflows. Those capability descriptions come from Tencent; the announcement does not provide an independent evaluation of how reliably the model completes them.
Tencent says Hy4 is already available in products including WorkBuddy, CodeBuddy, Yuanbao, its WeCom assistant and ima, with API access also connected to OpenRouter, Hermes and OpenCode. This is the company’s stated rollout; availability and access conditions may differ by product.
The announcement did not include downloadable weights or a system card for the new generation. Tencent said both would be released in the coming days. That timing matters because the launch was described in open-source terms while the artifact needed for self-hosting was still pending.
Hy4 follows Tencent’s August Hy4 Preview, but the Nov. 4 release is a distinct generation with new visual and computer-use features. Tencent reported internal product and finance benchmark results in its announcement; those results remain company-reported and are not needed to establish the release’s core change.