Text to Speech: OpenAI Audio from Webhook

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": "OVSyGmI6YFviPu8Q",
  "meta": {
    "templateCredsSetupCompleted": true
  },
  "name": "Generate audio from text using OpenAI - text-to-speech Workflow",
  "tags": [],
  "nodes": [
    {
      "id": "c40966a4-1709-4998-ae95-b067ce3496c9",
      "name": "Respond to Webhook",
      "type": "n8n-nodes-base.respondToWebhook",
      "position": [
        1320,
        200
      ],
      "parameters": {
        "options": {},
        "respondWith": "binary"
      },
      "typeVersion": 1.1
    },
    {
      "id": "c4e57bb6-79a4-4b26-a179-73e30d681521",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        280,
        -140
      ],
      "parameters": {
        "width": 501.55,
        "height": 493.060000000001,
        "content": "This `Webhook` node triggers the workflow when it receives a POST request.\n\n### 1. Test Mode:\n* Use the test webhook URL\n* Click the `Test workflow` button on the canvas. (In test mode, the webhook only works for one call after you click this button)\n\n### 1. Production Mode:\n* The workflow must be active for a **Production URL** to run successfully.\n* You can activate the workflow using the toggle in the top-right of the editor.\n* Note that unlike test URL calls, production URL calls aren't shown on the canvas (only in the executions list)."
      },
      "typeVersion": 1
    },
    {
      "id": "1364a4b6-2651-4b38-b335-c36783a25f12",
      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        825,
        60
      ],
      "parameters": {
        "color": 4,
        "width": 388.35000000000025,
        "height": 292.71000000000043,
        "content": "### Configure the OpenAI node with your API key:\nIf you haven't connected your OpenAI credentials in n8n yet, log in to your OpenAI account to get your API Key. Then, open the OpenAI node, click `Create New Credentials` and connect with the **OpenAI API**.\n"
      },
      "typeVersion": 1
    },
    {
      "id": "ba755814-75e6-4e16-b3a6-50cf4fc06350",
      "name": "Webhook",
      "type": "n8n-nodes-base.webhook",
      "position": [
        480,
        200
      ],
      "parameters": {
        "path": "generate_audio",
        "options": {},
        "httpMethod": "POST",
        "responseMode": "responseNode"
      },
      "typeVersion": 2
    },
    {
      "id": "ac46df50-cb1f-484c-8edf-8131192ba464",
      "name": "OpenAI",
      "type": "@n8n/n8n-nodes-langchain.openAi",
      "position": [
        960,
        200
      ],
      "parameters": {
        "input": "={{ $json.body.text_to_convert }}",
        "voice": "fable",
        "options": {},
        "resource": "audio"
      },
      "credentials": {
        "openAiApi": {
          "name": "<your credential>"
        }
      },
      "typeVersion": 1.3
    }
  ],
  "active": false,
  "settings": {
    "executionOrder": "v1"
  },
  "versionId": "84f1b893-e1a3-40c3-83b0-7cd637b353c4",
  "connections": {
    "OpenAI": {
      "main": [
        [
          {
            "node": "Respond to Webhook",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Webhook": {
      "main": [
        [
          {
            "node": "OpenAI",
            "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

Who is this for? This workflow is ideal for developers, content creators, or customer support teams looking to automate text-to-speech conversion using OpenAI.

Source: https://n8n.io/workflows/2386/ — original creator credit. Request a take-down →

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