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Tencent
Hy4 Preview
Open weightsMoEapache-2.0Released Aug 28, 2026
Tencent Hunyuan's fourth-generation open-weight flagship preview model, a Mixture-of-Experts system with 770B total parameters and 49B active parameters per token. It targets real-world productivity tasks across coding, office work, scientific research, and multi-step tool workflows, supports function calling, reasoning modes, and a context window of about one million tokens.
ChatText completionFunction callingCode generationReasoningtext · code
Provider (1)
Sorted by total cost (input + output per 1M tokens). Select a row to view provider details.
| Provider | Pricing (per 1M) | Rate limits | Regions | Health | Latency |
|---|---|---|---|---|---|
 | In: $0.83Out: $2.50 | 60 RPM / 200K TPM | us-east-1 | Healthy | 0ms |
Quick start
Use this model via OpenRouter with an OpenAI-compatible SDK.
import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://openrouter.ai/api/v1",
apiKey: process.env.OPENROUTER_API_KEY,
});
const response = await client.chat.completions.create({
model: "tencent/hy4-preview",
messages: [
{ role: "user", content: "Hello!" }
],
});
console.log(response.choices[0].message.content);Using OpenRouter API · OpenAI-compatible SDK