Hy4 Preview

Tencent Hy4 preview model with 1M context and deep thinking, served on TokenHub.

Tencenthy4-preview2026-08-28Report incorrect data

Specs

Context: 1.05M
Max output: 65.5K
Input price: ¥6/ 1M tokens
Output price: ¥18/ 1M tokens
Released: 2026-08-28

Context

Context window: 1.05M
Max input: 983K
Max output: 65.5K

Pricing · CNY / 1M tokens

Input: ¥6
Output: ¥18
Cache read: ¥0.3
Cache write: —

Modalities

Input: Text
Output: Text

API

API types: chatmessages

Reasoning

Reasoning: Yes
Levels: —

Info

Status: Preview
Released: 2026-08-28
Knowledge cutoff: —

Features

Confirmed: toolsstructured_outputstreamingcaching

How to call

tencentmodel = hy4-previewreasoning = thinking

chat

POSThttps://tokenhub.tencentmaas.com/v1/chat/completions

messages

POSThttps://tokenhub.tencentmaas.com/v1/messages

JSON

hy4-preview.json

{
  "id": "hy4-preview",
  "object": "model",
  "created": 1787875200,
  "owned_by": "tencent",
  "name": "Hy4 Preview",
  "api": {
    "types": [
      "chat",
      "messages"
    ]
  },
  "limits": {
    "context": 1048576,
    "input": 983040,
    "output": 65536
  },
  "modalities": {
    "input": [
      "text"
    ],
    "output": [
      "text"
    ]
  },
  "reasoning": {
    "supported": true,
    "efforts": []
  },
  "pricing": {
    "currency": "CNY",
    "unit": "1M_tokens",
    "input": 6,
    "output": 18,
    "cache_read": 0.3,
    "cache_write": null
  },
  "features": [
    "tools",
    "structured_output",
    "streaming",
    "caching"
  ],
  "info": {
    "status": "preview",
    "release_date": "2026-08-28",
    "knowledge_cutoff": null,
    "description": "Tencent Hy4 preview model with 1M context and deep thinking, served on TokenHub.",
    "docs": "https://cloud.tencent.com/document/product/1823/132252",
    "verified_at": "2026-10-11"
  }
}

Official sources