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N8N Interview Transcription Robot with Local Whisper and Claude Cleanup
ContentIntermediateMedia

N8N Interview Transcription Robot with Local Whisper and Claude Cleanup

An n8n workflow that transcribes interview audio locally with Whisper, then uses Claude to index questions and polish the transcript into a formatted Google Doc.

Time saved
0h / week
Setup time
Not stated
Running cost
Not stated
Cost range
$25–100/mo

The problem it solves

“N8N Interview Transcription Robot with Local Whisper and Claude Cleanup” is an intermediate Content AI agent workflow from Media. It connects n8n, Claude, Google Sheets and Other or custom in 5 steps. Setup takes about Not stated and running costs are about Not stated.

Turning raw interview recordings into a usable written record usually means manual transcription, then hand-scanning hours of text to find where each question was asked, then reformatting everything for sharing. This workflow automates the whole chain: audio goes in, a cleaned and question-indexed document comes out in Google Workspace.

How it flows
  1. Upload WAV
  2. Local Whisper transcription
  3. Claude question index
  4. Claude cleanup pass
  5. Formatted Google Doc

Step-by-step setup

  1. Set up the n8n trigger and upload path

    Create an n8n workflow that starts when an interview .wav file is supplied. Keep the intake simple so a recording can be dropped in without extra processing, and pass the file reference along to the transcription stage.

  2. Transcribe locally with Whisper

    Add a step that runs Whisper on the local machine rather than a hosted API. This keeps the audio on your own hardware and gives you a foundation you can extend into a fully local pipeline later if privacy requirements change.

  3. Generate a question index with Claude Sonnet

    Feed the raw transcript to Claude Sonnet and ask it to identify each interviewer question and where it appears. The output is a structured index that maps questions to their position in the conversation.

  4. Clean up the transcript with Claude Haiku

    Run a second Claude pass, this time with Haiku, to tidy the transcript text: fix obvious transcription artifacts, normalize speaker turns, and prepare the body for reading. Keep the question index attached so the cleanup preserves structure.

  5. Write the formatted document to Google Workspace

    Use the Google Workspace integration in n8n to create a document containing the cleaned transcript plus the question index. Format headings and sections so the result is ready to share without further editing.

Example prompts

Build the n8n transcription workflow
Using n8n, build a workflow that accepts an uploaded [INTERVIEW WAV FILE], runs it through a local Whisper transcription step, then sends the transcript to Claude Sonnet to produce a question index listing each interviewer question and its location. After that, pass the transcript and index to Claude Haiku to clean up transcription artifacts and normalize speaker turns. Finally, create a formatted document in Google Workspace containing the cleaned transcript with the question index as a section. Return the workflow as importable n8n JSON and note any credentials or environment variables I need to configure.
Question index and cleanup instructions
You are processing an interview transcript. First, act as an indexing pass: identify every question asked by the interviewer and record the question text with its approximate position in the transcript. Then act as a cleanup pass: correct obvious speech-to-text errors, normalize speaker labels, and keep the original meaning intact without adding content. Output two sections, a question index and a cleaned transcript, formatted so they can be inserted into a Google Doc. Here is the transcript: [RAW WHISPER TRANSCRIPT].

Frequently asked questions

What does the “N8N Interview Transcription Robot with Local Whisper and Claude Cleanup” workflow do?

An n8n workflow that transcribes interview audio locally with Whisper, then uses Claude to index questions and polish the transcript into a formatted Google Doc.

Which tools do I need?

You need n8n, Claude, Google Sheets and Other or custom.

How long does it take to set up?

Plan for about Not stated. It is rated intermediate. The guide walks through 5 steps, starting with “Set up the n8n trigger and upload path”.

How much does it cost to run?

Expect about Not stated in running costs ($25–100/mo range).

What problem does it solve?

Turning raw interview recordings into a usable written record usually means manual transcription, then hand-scanning hours of text to find where each question was asked, then reformatting everything for sharing. This workflow automates the whole chain: audio goes in, a cleaned and question-indexed document comes out in Google Workspace.

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