Hy4 is an AI model from Tencent. It is the first in its Hy line that can understand images and operate a computer, in both command-line and on-screen apps.
In plain words
It follows Hy4 preview, an earlier version whose weights Tencent shared under the Apache 2.0 licence: a mixture-of-experts model with 770 billion parameters, 49 billion of them active for each token. Tencent says Hy4 was trained on specialist programs like Blender and CAD, and plans to publish its weights and system cards soon. It runs in Tencent apps such as WorkBuddy, CodeBuddy and Yuanbao, and its API is also on OpenRouter, at about US$0.90 per million input tokens and US$2.70 per million output tokens.
A quick example
Imagine an office worker who asks an assistant built on Hy4 to read a folder of sales charts and draft a short summary for the team.
Where you'll meet it
- Office assistants that work across chats, emails, documents and meetings.
- Coding tools, including front-end and game development.
Related
Sources
- DocsTencent Launches Hy4, Joining the Ranks of the World's Leading Open-Source AI Models, Tencent · read 8 Nov 2026
- DocsHy4-preview model card, Tencent (Hugging Face) · read 8 Nov 2026
Checked by WhatIsAI against the sources above · 8 Nov 2026. Spotted an error? Report it.