Hy3 preview

TencentMCP Tool CallReasoning

tencent/hy3-previewOpen Weights

Tencent Hy reasoning model for coding, instruction following, and agent tasks

Benchmark Pricing$0.17 / 1M in$0.57 / 1M out$0.05 cache read

Context: 256,000 tokens•Max Output: 64,000 tokens•Released: 2026-04-20

TECHNICAL SPECIFICATIONS

Context Window256,000256K tokens

Max Output64,00064K tokens

LicenseOpen SourceSelf-hostable

Input Modalities

Text

Function / Tool CallingSupported (MCP Ready)

Structured OutputsGuaranteed Schema

MODEL CONTEXT PROTOCOL (MCP) READINESS

✓ Hy3 preview natively supports OpenAI / Anthropic format tool calling and is fully compatible with MCP servers and agent loops.

MCP Context Window Recommendations

With a context capacity of 256,000 tokens, this model can handle moderately large MCP tool definitions and multi-turn conversation logs comfortably.

STANDARDIZED BENCHMARKS & EVALS

SWE-Bench Verifiedresolved

74.4

API CALL INVOCATION EXAMPLE

// Example: Calling Hy3 preview via OpenAI SDK
import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.TENCENT_API_KEY,
});

const response = await client.chat.completions.create({
  model: "tencent/hy3-preview",
  messages: [{ role: "user", content: "Hello! Can you inspect MCP tools?" }],
});

console.log(response.choices[0].message.content);