Hy4 preview

tencent/hy4-preview

Tencent: Hy4 preview is a mixture-of-experts model from Tencent, with 49B active parameters out of 770B total. It is designed for coding agents, complex tool-use workflows, and productivity tasks that...

InputText
OutputText
Input / Outputclub$0.88404 / $2.65106per 1M tokens · USD
Context window1Mtoken
Maximum output64Ktoken

Pricing

Current model usage rates. Choose your plan to see its published prices.

Pricing
UsagePricing
InputUS$0.88404/ 1M token
Cache readUS$0.04452/ 1M token
OutputUS$2.65106/ 1M token

Membership and model usage are billed separately. Compare plans

Capabilities

Input
Text
Output
Text
Context window
1,048,576 token
Maximum output
64,000 token
Reasoning
high · low · none

Providers

Model supply available through Vecbase.

Via OpenRouter

Access is subject to your account’s permissions and model availability.

Frequently asked questions

What is Hy4 preview, and who develops it?

Hy4 preview is a model from tencent. Its model ID on Vecbase is tencent/hy4-preview. Tencent: Hy4 preview is a mixture-of-experts model from Tencent, with 49B active parameters out of 770B total. It is designed for coding agents, complex tool-use workflows, and productivity tasks that...

How much does Hy4 preview cost on Vecbase?

For Hy4 preview, the Club plan lists USD 0.88404 per 1 million input tokens and USD 2.65106 per 1 million output tokens, as of 10/22/2026, 9:25:16 PM UTC. See the pricing table for cache rates, input-length tiers and other usage types. Membership fees are separate.

How many tokens fit in Hy4 preview’s context window?

Hy4 preview has a context window of 1,048,576 tokens. Input and output must fit within the limits of the API you use.

What is the maximum output length for Hy4 preview?

Hy4 preview can generate up to 64,000 tokens per response. Your API or request settings may set a lower limit.

Can Hy4 preview call tools in an agent workflow?

Yes. Hy4 preview supports tool calling. Your application provides the tool definitions and runs the tools the model requests.

Does Hy4 preview support structured outputs?

Yes. Hy4 preview supports structured output. Set the required format in your API request and check the returned data before using it.

Which input and output formats does Hy4 preview support?

Hy4 preview accepts Text and produces Text.

Which providers make Hy4 preview available through Vecbase?

Vecbase offers Hy4 preview through OpenRouter. Availability may vary by provider.

Which model ID should an agent use to request Hy4 preview?

Use tencent/hy4-preview as the model identifier for Hy4 preview. See Vecbase’s API documentation for authentication, required inputs and supported request formats.

Which reasoning settings are listed for Hy4 preview?

Hy4 preview supports these reasoning levels: high, low, and none. Available options depend on your API.

What does an agent need to access Hy4 preview through Vecbase?

To use Hy4 preview, you need an authenticated account with the required permissions, sufficient balance and the relevant capability enabled. See the documentation for setup.

Is a release date available for Hy4 preview?

We do not yet have a confirmed release date for Hy4 preview.

Which models can I compare with Hy4 preview on Vecbase?

You can compare Hy4 preview with Vecbase Flash (vecbase-1.0-lite), Vecbase (vecbase-1.0), and Claude Haiku Latest (anthropic/claude-haiku-latest). Check their capabilities and prices to find the best fit for your task.