Create a speech-to-text API with OpenAI GPT4o-mini transcribe
Ready for 3.0Ready for 3.0. This template uses no nodes that n8n 3.0 removes. No removed nodes, versions or helpers found. Static check, last run 2026-10-19.
What this workflow does
This workflow has 4 nodes and runs when an HTTP POST request hits its webhook URL. It uses only n8n's built-in nodes. It also calls api.openai.com over HTTP.
How it runs
Trigger: When an HTTP POST request hits its webhook URL.
- Transcribe with OpenAI (HTTP Request): calls api.openai.com (POST)
- Extract transcript (Edit Fields (Set)): sets 1 field: Transcript
- Respond to Webhook: sends the response back to the webhook caller
HTTP calls to: api.openai.com
Before you upgrade to n8n 3.0
Nothing in this workflow is removed in n8n 3.0, so it should import and run after the upgrade.
Nodes used (4)
- HTTP Request
n8n-nodes-base.httpRequest - Edit Fields (Set)
n8n-nodes-base.set - Webhook
n8n-nodes-base.webhook - Respond to Webhook
n8n-nodes-base.respondToWebhook
From the author
Description This template provides a simple and powerful backend for adding speech-to-text capabilities to any application. It creates a dedicated webhook that receives an audio file, transcribes it using OpenAI's gpt-4o-mini model, and returns the clean…