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Hy4-preview

Hy4 preview is a new-generation Mixture-of-Experts (MoE) flagship model developed by the Tencent Hy Team.

text → text · made by Tencent Hunyuan

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About

Hy4-preview — a text model from Tencent Hunyuan.

It takes text and returns text, with a context window of 1,048,576 tokens. It was published in August 2026. Its sellers say it can reason step by step and call a tool. The catalogue files it under chat. Its weights are published under APACHE-2.0, so you may run it on your own machine, or buy it from whoever serves it cheapest.

Every current figure

Maker
Tencent Hunyuan
Register
model
Takes
text
Returns
text
Context
1,048,576 tokens
Longest answer
65,536 tokens
Published
August 2026
Parameters
780 billion · read from its own weights
Licence
apache-2.0

Known as 1 name

tencent/Hy4-preview