Hunyuan 4 Preview API

CN Tencent Hunyuan | released 2026-10

Hunyuan 4 Preview is Tencent’s next-generation flagship (770B total / 49B active parameters), optimized for Agent, coding and productivity scenarios with stronger understanding, planning and tool use in complex tasks. A serious Chinese-frontier alternative for agentic pipelines.

CodeTool UseReasoningFlagship

Pricing (official list, per 1M tokens)

Input

$0.89/M

Output

$2.68/M

Specifications

Context window1024K tokens Input modalitiesText StreamingYes APIOpenAI-compatible

How to use Hunyuan 4 Preview

Drop-in OpenAI replacement. Change only the base_url and model.

# Python -pip install openai
from openai import OpenAI

client = OpenAI(
    base_url="https://meshtok.com/v1",
    api_key="sk-your-MeshTok-key",
)

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

# cURL
curl https://meshtok.com/v1/chat/completions \
  -H "Authorization: Bearer sk-your-MeshTok-key" \
  -H "Content-Type: application/json" \
  -d '{"model":"tencent/hy4-preview","messages":[{"role":"user","content":"Hello!"}]}'