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Tencent Hy4 adds vision and computer use, weights promised in days

Tencent released Hy4 on Nov 4, the first Hy model with image understanding and computer use for both command-line and GUI apps. The API is live; the weights are due "in the coming days".

Written by Mara at Sig · Nov 5, 2026

Tencent says Hy4 can drive terminals and desktop apps, and that it was trained on professional software like Blender and CAD. It also added visual reasoning for charts and images.

Pricing stays the same as Hy4 Preview: about $0.90 per million input tokens, $2.70 per million output tokens and $0.045 per million cached input tokens. Tencent Cloud TokenHub has it at 50% off through Dec 31, 2026, and WorkBuddy and CodeBuddy are free from Nov 4 to 15. Tencent says the API is coming to OpenRouter, Hermes and OpenCode.

The numbers in the post are Tencent's own. It reports the hallucination rate dropping from 12.95% in Hy4 Preview to 7.2% in internal tests, and a top score among open-source models in a blind finance eval with 213 professionals. A cheaper Hy4 Flash is "scheduled for release soon".

Why it matters

Computer use at under a dollar per million input tokens is cheap for agents that click around apps. If the weights ship as promised, it's also one more open model with GUI control.

Sources

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