About this recipe
Recipe Template
{
"id": "6Yzmlp5xF6oHo1VW",
"meta": {
"instanceId": "173f55e6572798fa42ea9c5c92623a3c3308080d3fcd2bd784d26d855b1ce820"
},
"name": "Text to Speech (OpenAI)",
"tags": [],
"nodes": [
{
"id": "938fedbd-e34c-40af-af2f-b9c669e1a6e9",
"name": "When clicking \"Test workflow\"",
"type": "n8n-nodes-base.manualTrigger",
"position": [
380,
380
],
"parameters": [],
"typeVersion": 1
},
{
"id": "1d59db5d-8fe6-4292-a221-a0d0194c6e0c",
"name": "Set input text and TTS voice",
"type": "n8n-nodes-base.set",
"position": [
760,
380
],
"parameters": {
"mode": "raw",
"options": [],
"jsonOutput": "{\n \"input_text\": \"The quick brown fox jumped over the lazy dog.\",\n \"voice\": \"alloy\"\n}\n"
},
"typeVersion": 3.2
},
{
"id": "9d54de1d-59b7-4c1f-9e88-13572da5292c",
"name": "Send HTTP Request to OpenAI's TTS Endpoint",
"type": "n8n-nodes-base.httpRequest",
"position": [
1120,
380
],
"parameters": {
"url": "https:\/\/api.openai.com\/v1\/audio\/speech",
"method": "POST",
"options": [],
"sendBody": true,
"sendHeaders": true,
"authentication": "predefinedCredentialType",
"bodyParameters": {
"parameters": [
{
"name": "model",
"value": "tts-1"
},
{
"name": "input",
"value": "={{ $json.input_text }}"
},
{
"name": "voice",
"value": "={{ $json.voice }}"
}
]
},
"headerParameters": {
"parameters": [
{
"name": "Authorization",
"value": "Bearer $OPENAI_API_KEY"
}
]
},
"nodeCredentialType": "openAiApi"
},
"credentials": {
"openAiApi": {
"id": "VokTSv2Eg5m5aDg7",
"name": "OpenAi account"
}
},
"typeVersion": 4.1
},
{
"id": "1ce72c9c-aa6f-4a18-9d5a-3971686a51ec",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
280,
256
],
"parameters": {
"width": 273,
"height": 339,
"content": "## Workflow Trigger\nYou can replace this manual trigger with another trigger type as required by your use case."
},
"typeVersion": 1
},
{
"id": "eb487535-5f36-465e-aeee-e9ff62373e53",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
660,
257
],
"parameters": {
"width": 273,
"height": 335,
"content": "## Manually Set OpenAI TTS Configuration\n"
},
"typeVersion": 1
},
{
"id": "36b380bd-0703-4b60-83cb-c4ad9265864d",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
1020,
260
],
"parameters": {
"width": 302,
"height": 335,
"content": "## Send Request to OpenAI TTS API\n"
},
"typeVersion": 1
},
{
"id": "ff35ff28-62b5-49c8-a657-795aa916b524",
"name": "Sticky Note3",
"type": "n8n-nodes-base.stickyNote",
"position": [
660,
620
],
"parameters": {
"color": 4,
"width": 273,
"height": 278,
"content": "### Configuration Options\n- \"input_text\" is the text you would like to be turned into speech, and can be replaced with a programmatic value for your use case. Bear in mind that the maximum number of tokens per API call is 4,000.\n\n- \"voice\" is the voice used by the TTS model. The default is alloy, other options can be found here: [OpenAI TTS Docs](https:\/\/platform.openai.com\/docs\/guides\/text-to-speech)"
},
"typeVersion": 1
},
{
"id": "5f7ef80e-b5c8-41df-9411-525fafc2d910",
"name": "Sticky Note4",
"type": "n8n-nodes-base.stickyNote",
"position": [
1020,
620
],
"parameters": {
"color": 4,
"width": 299,
"height": 278,
"content": "### Output\nThe output returned by OpenAI's TTS endpoint is a .mp3 audio file (binary).\n\n\n### Credentials\nTo use this workflow, you'll have to configure and provide a valid OpenAI credential.\n"
},
"typeVersion": 1
}
],
"active": false,
"pinData": [],
"settings": {
"executionOrder": "v1"
},
"versionId": "19d67805-e208-4f0e-af44-c304e66e8ce8",
"connections": {
"Set input text and TTS voice": {
"main": [
[
{
"node": "Send HTTP Request to OpenAI's TTS Endpoint",
"type": "main",
"index": 0
}
]
]
},
"When clicking \"Test workflow\"": {
"main": [
[
{
"node": "Set input text and TTS voice",
"type": "main",
"index": 0
}
]
]
}
}
}How to Use an n8n Template
Create a New Workflow
Click "New Workflow" in your n8n dashboard to get started.
Copy & Paste Template
First, copy this template:
Click here to copy the JSON
.
Then, in n8n, click the three dots (···) → "Import from file" and paste the JSON code.
Customize the Nodes
Go through each node in the workflow to update inputs like spreadsheet IDs, email addresses, or message content. Adjust field mappings to match your data.
Grant Access
For nodes that connect to external apps (like Google Sheets or Slack), you'll need to grant access. Connect your accounts using OAuth or an API key and save the credentials in the node.
Test It
Run the workflow by clicking "Execute Node" for each step or "Run Once" for the whole thing. Check the right sidebar to inspect data and debug any errors (they'll show up in red).
Activate Workflow
Once everything works as expected, click the "Activate" toggle to turn your workflow on. You're all set!