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LongCat-2.5-Preview

Meituan LongCat high-performance agentic model with image understanding and strong coding capability.

Meituanlongcat-2.5-preview2026-09-25Report incorrect data

Specs

Context
1.05M
Max output
131.1K
Input price
—
Output price
—
Released
2026-09-25

Context

Context window
1.05M
Max input
—
Max output
131.1K

Pricing

Not published

Modalities

Input
TextImage
Output
Text

API

API types
chatmessages

Reasoning

Reasoning
Yes
Levels
—

Info

Status
Preview
Released
2026-09-25
Knowledge cutoff
—

Features

Confirmed
streaming
Source · official docsVerified 2026-10-11

How to call

1 provider

meituanmodel = LongCat-2.5-Previewreasoning = thinking.type

chat
POSThttps://api.longcat.chat/openai/v1/chat/completions
messages
POSThttps://api.longcat.chat/anthropic/v1/messages

JSON

Standard format
longcat-2.5-preview.json
{
  "id": "longcat-2.5-preview",
  "object": "model",
  "created": 1790294400,
  "owned_by": "meituan",
  "name": "LongCat-2.5-Preview",
  "api": {
    "types": [
      "chat",
      "messages"
    ]
  },
  "limits": {
    "context": 1048576,
    "input": null,
    "output": 131072
  },
  "modalities": {
    "input": [
      "text",
      "image"
    ],
    "output": [
      "text"
    ]
  },
  "reasoning": {
    "supported": true,
    "efforts": []
  },
  "pricing": null,
  "features": [
    "streaming"
  ],
  "info": {
    "status": "preview",
    "release_date": "2026-09-25",
    "knowledge_cutoff": null,
    "description": "Meituan LongCat high-performance agentic model with image understanding and strong coding capability.",
    "docs": "https://longcat.chat/platform/docs/pricing/longcat-2.5",
    "verified_at": "2026-10-11"
  }
}

Official sources

4