Hy4

hy4

Hy4’s official release brings comprehensive, substantial improvements over the Hy4 preview—especially in agent capabilities and performance on complex, long-horizon, real-world productivity tasks—and introduces visual understanding for the first time.

Context Window

256K tokens

Maximum Output

128K tokens

Release Date

Nov 4, 2026

Modalities

Hy4 Pricing

Input PriceOutput PriceCache Read
$0.417/M$1.251/M$0.021/M

Hy4 API Capabilities

Reasoning

Supported

Tool calling

Supported

Temperature parameter

Supported

Attachments

Not supported

Knowledge Base

—

Endpoint Protocols

Completions APIResponses APIMessages API

Hy4 Model Highlights

The model's defining strengths.

Visual Understanding

The official Hy4 release adds visual understanding to the model family.

Agentic Productivity

Designed for multi-step agent workflows and real-world productivity tasks.

Long-Context Work

Supports long-context work across code, documents and extended workflows.

Hy4 Use Cases

Practical workloads suited to the model.

Software Development

Analyze code, investigate issues and propose changes for developers to review and test.

Visual Document Analysis

Review text and supported images to summarize information and assist with analysis.

Office and Research Workflows

Organize supplied materials, draft reports and assist with multi-step research tasks.

How to Use Hy4 via the TokenHub API

Create API key
import OpenAI from "openai"

const client = new OpenAI({
  apiKey: process.env.TOKENHUB_API_KEY,
  baseURL: "https://us-api.tokenhub.com/v1",
})

const result = await client.chat.completions.create({})
console.log(result.choices[0]?.message?.content)

Hy4 Media and Demos

Selected public posts and videos about Hy4 and Hy4 Preview.

X (Twitter)

View original
View post on X
View original
View post on X
View original
View post on X

Reddit

View original
View original
View original

YouTube

View original
Watch on YouTube
View original
Watch on YouTube
View original
Watch on YouTube

Hy4 FAQs

Useful questions and answers about Hy4.

What is Hy4?+

Hy4 is a Tencent model designed for reasoning, productivity and agent workflows.

How is Hy4 different from Hy4 Preview?+

The official release improves on the preview and adds visual understanding. Check the selected model version before use.

What tasks are suitable for Hy4?+

It can assist with software development, document analysis and multi-step office or research work.

What inputs and outputs does Hy4 support?+

The model is listed with text and image input and text output. Actual availability depends on the selected provider and route.

What limitations should I consider?+

Outputs can contain errors. Review important results, test generated code and verify completed actions.

How do I use Hy4 on TokenHub?+

If available to your account, select Hy4 in your TokenHub API request and check the listed endpoint and current pricing.

Ready to use Hy4?

Use one API key to access Hy4 and more AI models through TokenHub.

Create API key