Tencent

Artificial Intelligence · Open-Source Models · Enterprise Software

Launch

Tencent launches Hy4, a 770B-parameter model with vision, computer use

The open release is a wedge for Tencent Cloud, which profits when developers pay to run the model at scale.

• Tencent released Hy4 on November 4, 2026, a 770-billion-parameter mixture-of-experts model that adds vision and computer-use capabilities to its Hunyuan line for the first time.
• The model is built into Tencent's own products, including WorkBuddy, CodeBuddy, Yuanbao and ima, rather than sold purely as a standalone chatbot.
• Computer-use lets Hy4 operate both command-line and graphical interfaces, with dedicated training on professional tools like Blender and CAD for long, multi-step tasks.
• Despite the open-source framing, Hy4's weights were not available at launch; Tencent says it will publish them and a system card in the coming days.
• API pricing is unchanged from the August preview at $0.834 per million input tokens and $2.501 per million output tokens, with a 50% discount through December 31.
• Tencent says Hy4 joins the top tier of open-weight models but still trails closed frontier systems on its hardest internal benchmarks for math, coding and visual reasoning.
• The release reflects a broader shift among Chinese tech giants toward open-weight AI to drive adoption of their cloud infrastructure, intensifying competition with DeepSeek, Alibaba and Z.ai.