Use Openrouter in N8n Versions <1.78

The workflow JSON

Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →

{
  "id": "VhN3CX6QPBkX77pZ",
  "meta": {
    "templateCredsSetupCompleted": true
  },
  "name": "Use any LLM-Model via OpenRouter",
  "tags": [
    {
      "id": "uumvgGHY5e6zEL7V",
      "name": "Published Template",
      "createdAt": "2025-02-10T11:18:10.923Z",
      "updatedAt": "2025-02-10T11:18:10.923Z"
    }
  ],
  "nodes": [
    {
      "id": "b72721d2-bce7-458d-8ff1-cc9f6d099aaf",
      "name": "Settings",
      "type": "n8n-nodes-base.set",
      "position": [
        -420,
        -640
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "3d7f9677-c753-4126-b33a-d78ef701771f",
              "name": "model",
              "type": "string",
              "value": "deepseek/deepseek-r1-distill-llama-8b"
            },
            {
              "id": "301f86ec-260f-4d69-abd9-bde982e3e0aa",
              "name": "prompt",
              "type": "string",
              "value": "={{ $json.chatInput }}"
            },
            {
              "id": "a9f65181-902d-48f5-95ce-1352d391a056",
              "name": "sessionId",
              "type": "string",
              "value": "={{ $json.sessionId }}"
            }
          ]
        }
      },
      "typeVersion": 3.4
    },
    {
      "id": "a4593d64-e67a-490e-9cb4-936cc46273a0",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -460,
        -740
      ],
      "parameters": {
        "width": 180,
        "height": 400,
        "content": "## Settings\nSpecify the model"
      },
      "typeVersion": 1
    },
    {
      "id": "3ea3b09a-0ab7-4e0f-bb4f-3d807d072d4e",
      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -240,
        -740
      ],
      "parameters": {
        "color": 3,
        "width": 380,
        "height": 400,
        "content": "## Run LLM\nUsing OpenRouter to make model fully configurable"
      },
      "typeVersion": 1
    },
    {
      "id": "19d47fcb-af37-4daa-84fd-3f43ffcb90ff",
      "name": "When chat message received",
      "type": "@n8n/n8n-nodes-langchain.chatTrigger",
      "position": [
        -660,
        -640
      ],
      "parameters": {
        "options": {}
      },
      "typeVersion": 1.1
    },
    {
      "id": "f5a793f2-1e2f-4349-a075-9b9171297277",
      "name": "AI Agent",
      "type": "@n8n/n8n-nodes-langchain.agent",
      "position": [
        -180,
        -640
      ],
      "parameters": {
        "text": "={{ $json.prompt }}",
        "options": {},
        "promptType": "define"
      },
      "typeVersion": 1.7
    },
    {
      "id": "dbbd9746-ca25-4163-91c5-a9e33bff62a4",
      "name": "Chat Memory",
      "type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
      "position": [
        -80,
        -460
      ],
      "parameters": {
        "sessionKey": "={{ $json.sessionId }}",
        "sessionIdType": "customKey"
      },
      "typeVersion": 1.3
    },
    {
      "id": "ef368cea-1b38-455b-b46a-5d0ef7a3ceb3",
      "name": "LLM Model",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "position": [
        -200,
        -460
      ],
      "parameters": {
        "model": "={{ $json.model }}",
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "name": "<your credential>"
        }
      },
      "typeVersion": 1.1
    },
    {
      "id": "32601e76-0979-4690-8dcf-149ddbf61983",
      "name": "Sticky Note2",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -460,
        -320
      ],
      "parameters": {
        "width": 600,
        "height": 240,
        "content": "## Model examples\n\n* openai/o3-mini\n* google/gemini-2.0-flash-001\n* deepseek/deepseek-r1-distill-llama-8b\n* mistralai/mistral-small-24b-instruct-2501:free\n* qwen/qwen-turbo\n\nFor more see https://openrouter.ai/models"
      },
      "typeVersion": 1
    }
  ],
  "active": false,
  "settings": {
    "executionOrder": "v1"
  },
  "versionId": "6d0caf5d-d6e6-4059-9211-744b0f4bc204",
  "connections": {
    "Settings": {
      "main": [
        [
          {
            "node": "AI Agent",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "LLM Model": {
      "ai_languageModel": [
        [
          {
            "node": "AI Agent",
            "type": "ai_languageModel",
            "index": 0
          }
        ]
      ]
    },
    "Chat Memory": {
      "ai_memory": [
        [
          {
            "node": "AI Agent",
            "type": "ai_memory",
            "index": 0
          }
        ]
      ]
    },
    "When chat message received": {
      "main": [
        [
          {
            "node": "Settings",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}

Credentials you'll need

Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.

• openAiApi

About this workflow

In version 1.78, n8n introduced a dedicated node to use the OpenRouter service, which lets you to use a lot of different LLM models and providers and change models on the fly in an agentic workflow.

Source: https://n8n.io/workflows/2897/ — original creator credit. Request a take-down →

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