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Tencent Hunyuan Hy4 Preview: Testing Cross-File Office and Development Tasks

Tencent introduced and opened Hy4 preview on August 28, oriented to tasks such as software engineering and office analysis. This article explains the division of labor between the Hunyuan model and WorkBuddy, CodeBuddy and other products, discusses how a small team can start verification from cross-file data collection, and explains that preview versions, historical limited-time activities, and current service conditions need to be checked separately.

Chinese edition published 23 Oct 2026 · 阅读中文原文 ↗

Source timingVerified version: Hy4 preview; Tencent official announcement on August 28, 2026; official data verified on October 23, 2026.

This time we introduce the preview version

Tencent’s official announcement on August 28 introduced Hy4 preview, and listed the directions of code development, cross-file office and scientific research, and also stated that it can be used through Tencent related products and API entrances. The preview in the name should be retained: it expresses the release status of the version and should not be omitted in articles or purchase instructions and then written as the official stable version.

From prototype to working product

Hunyuan is a family of models, while WorkBuddy and CodeBuddy provide specific working environments. The model is responsible for understanding and generating. Whether you can access a file, run a program or modify a project also depends on the product authorization and connection method. Open source model weights and cloud calls are also different options, and equipment and maintenance conditions need to be evaluated separately.

What kind of business scenario is suitable (ChinaOPC analysis)

A small team preparing a proposal for a business can start by aligning the customer brief and product specifications with the draft quotation. Let the model first list the product model, quantity, delivery date and matters to be confirmed, and then organize it into a proposal. The key to working across files is to stay consistent, not to generate as many pages as possible.

If the draft quotation is inconsistent with the formal contract, the differences should be submitted to the person in charge for confirmation. Models cannot determine offers, payment times or delivery responsibilities for customers on their own. Recording the confirmation status in a table is often more helpful in advancing real business than requiring the generation of longer solutions.

How to enter trial run of preview model

First try it out with a desensitized sample and an independent output directory, and save the input, model name, result version and manual modification records. Repeat the same task after the upgrade and compare whether numbers, attachments, and formatting have changed. Reserve alternative processing methods for ongoing service projects to avoid a single version change bringing the entire work to a halt.

Historical announcements are not equal to the current package

The limited-time free trial in the original announcement was part of the event schedule at that time, and this article does not promote it as a benefit that can still be enjoyed in October. For actual access, price and open scope, please check the current console and service description. Whether it is suitable for local deployment also needs to check the weight licensing, hardware requirements and team maintenance capabilities.

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Sources and editorial notes

AI-assisted organizing and writing. The model capabilities are based on the following official information, and the task selection and verification method is ChinaOPC original analysis; no paid API horizontal evaluation is performed, and the manufacturer's self-test, example or preview capabilities are not written as actual test delivery results. English translation of the Chinese edition, prepared with machine assistance and editorial checks. Source verification dates refer to the original Chinese research.

Source titles and publisher names are retained in their original language. Refer to the linked originals for official documents and current requirements.

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