hy4-preview

About hy4-preview

Hy4 preview total parameters 770B, activation parameters 49B, focusing on optimization for Agent, Coding, and productivity scenarios, enhancing understanding, planning, tool invocation, and continuous execution capabilities in complex tasks. Compared to the previous generation model, Hy4 preview further improves in multi-step Agent, code development, and productivity tasks, with better task decomposition, context retention, instruction adherence, and long-chain execution capabilities. In Coding scenarios, it further enhances code understanding, generation, modification, and handling of complex engineering tasks; in productivity scenarios, it focuses on improving document processing, information analysis, office automation, game development, web generation, and cross-tool collaboration capabilities. Hy4 preview is suitable for Coding Agents, complex tool invocation, and various Agent workflows requiring multi-step planning and continuous execution, providing more reliable task completion capabilities for complex tasks in real business scenarios.

Price by routing group

Pick a group in the console when you create a key. Status is live from the router. Live status by group →

USD per 1M tokens

Call hy4-preview in one request

Works with the OpenAI SDK and any OpenAI-compatible client. Replace the key with your own.

curl https://api.nixapi.com/v1/chat/completions \
  -H "Authorization: Bearer $NIXAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "hy4-preview",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

from openai import OpenAI

client = OpenAI(base_url="https://api.nixapi.com/v1", api_key="sk-…")

resp = client.chat.completions.create(
    model="hy4-preview",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(resp.choices[0].message.content)

import OpenAI from 'openai';

const client = new OpenAI({ baseURL: 'https://api.nixapi.com/v1', apiKey: process.env.NIXAPI_KEY });

const resp = await client.chat.completions.create({
  model: "hy4-preview",
  messages: [{ role: 'user', content: 'Hello!' }],
});
console.log(resp.choices[0].message.content);

Full API reference →

Questions about hy4-preview