# Tencent releases Hunyuan Hy4, a 770B open-source model with native vision and computer use

> Original title: 腾讯混元跻身最强开源模型！一手实测Hy4：搭配WorkBuddy，多模态Agent交付力拉满

- Source: QbitAI
- Published: 2026-11-09T08:44:00.000Z
- Bad Influence: https://badinfluence.news/items/sha8cu0k0itxrdkf8bvzua8sg
- Original: https://www.qbitai.com/2026/11/507843.html

## Summary

Tencent says its Hunyuan Hy4 full version has 770B total parameters and 49B activated parameters, and is its first model with native vision and computer-use support. Tencent reports that Hy4's hallucination rate fell from 12.95% in the preview to 7.2%, and that weights will be open-sourced soon. Free access runs until November 15, 23:59, through WorkBuddy and CodeBuddy.