How much does Hy4 preview cost?

Hy4 preview costs $0.83 per million input tokens and $2.50 per million output tokens on standard pricing. A workload of 20M input and 5M output tokens a month is about $29.

What is the context length of Hy4 preview?

Hy4 preview accepts up to 1,048,576 tokens (1M) of input and can return up to 64,000 tokens in one response.

Does Hy4 preview support tool calling and structured outputs?

Yes, Hy4 preview supports function/tool calling and structured (JSON) outputs. Supported tools: Function calling, Structured outputs, JSON mode, Reasoning, Deterministic seed, Prompt caching.

What inputs and outputs does Hy4 preview support?

Hy4 preview accepts Text as input and produces Text as output.

When was Hy4 preview released?

Hy4 preview was released by Tencent in 2026-08-28.

Hy4 preview

hy4-preview

API Provider site

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... Built by Tencent.

Prices updated recently

Input price

$0.83

per 1M tokens · Standard

Output price

$2.50

per 1M tokens · Standard

Input limit

tokens

Output limit

64K

tokens

Input formats

TextImageVideoAudioPDF

Output formats

TextImageVideoAudioPDF

Compare

Hy4 preview price history

6 price records since 9/25/2026 · 4 changes

Hy4 preview cost calculator

Input20M tokens

Output5M tokens

$29/month

Standard pricing

Overview

What is Hy4 preview?

Hy4 preview is a text & reasoning model from Tencent. 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... Its 1M context window and $0.83 input price make it a candidate for quality-focused production applications.

Content workflowsClassification

Rates

Hy4 preview pricing

Pricing is based on token usage. Provider-specific caching, batch, regional, and tool charges may affect the final cost.

Input · Standard

$0.83

Per 1M tokens

Cached input · Standard

$0.04

Per 1M tokens

Capabilities

Hy4 preview Tools

Tools available when using Hy4 preview through supported provider APIs.

Function calling

Supported

Structured outputs

Supported

JSON mode

Supported

Reasoning

Supported

Built-in web search

Not supported

Log probabilities

Not supported

Deterministic seed

Supported

Parallel tool calls

Not supported

Prompt caching

Supported

Strengths and limitations

Strengths

Priced at $0.83 input and $2.50 output per million tokens.
1M context supports large documents, repositories and extended conversations.
Supports text & reasoning workloads in one model.

Limitations

Real-world cost still depends on prompt length, response length and provider-specific billing rules.
Large context capacity does not guarantee consistent retrieval across the entire prompt.
Arena Elo and MMLU-Pro are directional; test accuracy, latency and reliability on your own workload before committing.

Arena Elo, MMLU-Pro and pricing figures are illustrative; validate current vendor terms before purchase.

Same provider