Convert Telegram voice messages to Google Docs with Whisper & GPT-4o tagging

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Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

This n8n template demonstrates how to automatically convert voice messages from Telegram into structured, searchable notes in Google Docs using AI transcription and intelligent tagging. Use cases a...

Best for

Internal Wiki automation workflows
AI Summarization automation workflows
intermediate n8n builders looking for reusable templates

Tools used

n8n-nodes-base.telegramtrigger, @n8n/n8n-nodes-langchain.openai, n8n-nodes-base.function, n8n-nodes-base.googledocs, n8n-nodes-base.telegram, n8n-nodes-base.if, n8n-nodes-base.set

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Julian Reich .

Original n8n.io source

1.1 Workflow description

Title: Convert Telegram voice messages to Google Docs with Whisper & GPT-4o tagging
Workflow name: Convert Telegram voice messages to Google Docs with Whisper & GPT-4o tagging

This n8n template demonstrates how to automatically convert voice messages from Telegram into structured, searchable notes in Google Docs using AI transcription and intelligent tagging.

Use cases are many: Try capturing ideas on-the-go while walking, recording meeting insights hands-free, creating voice journals, or building a personal knowledge base from spoken thoughts!

Good to know

OpenAI Whisper transcription costs approximately $0.006 per minute of audio
ChatGPT tagging adds roughly $0.001-0.003 per message depending on length
The workflow supports both German and English voice recognition
Text messages are also supported - they bypass transcription and go directly to AI tagging
Perfect companion: Combine with the "Weekly AI Review" workflow for automated weekly summaries of all your notes!

How it works

Telegram receives your voice message or text and triggers the workflow
An IF node intelligently detects whether you sent audio or text content
For voice messages: Telegram downloads the audio file and OpenAI Whisper transcribes it to text
For text messages: Content is passed directly to the next step
ChatGPT analyzes the content and generates up to 3 relevant keywords (Work, Ideas, Private, Health, etc.)
A function node formats everything with Swiss timestamps, message type indicators, and clean structure
The formatted entry gets automatically inserted into your Google Doc with date, keywords, and full content
Telegram sends you a confirmation with the transcribed/original text so you can verify accuracy

How to use

Simply send a voice message or text to your Telegram bot - the workflow handles everything automatically
The manual execution can be used for testing, but in production this runs on every message
Voice messages work best with clear speech in quiet environments for optimal transcription

Requirements

Telegram Bot Token and configured webhook
OpenAI API account for Whisper transcription and ChatGPT tagging
Google Docs API access for document writing
A dedicated Google Doc where all notes will be collected

Customising this workflow

Adjust the AI prompt to use different tagging categories relevant to your workflow (e.g., project names, priorities, emotions)
Add multiple Google Docs for different contexts (work vs. private notes)
Include additional processing like sentiment analysis or automatic task extraction
Connect to other apps like Notion, Obsidian, or your preferred note-taking system

And don't forget to also implement the complimentary workflow Weekly AI Review!

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - Telegram Sprachnachricht Empfang

Type / Role: n8n-nodes-base.telegramTrigger - telegramTrigger
Config choices: Version 1.2

Block 2 - OpenAI Whisper Transkription

Type / Role: @n8n/n8n-nodes-langchain.openAi - openAi
Config choices: Version 1.8

Block 3 - Text formatieren

Type / Role: n8n-nodes-base.function - function
Config choices: Version 1

Block 4 - In Google Doc speichern

Type / Role: n8n-nodes-base.googleDocs - googleDocs
Config choices: Version 2

Block 5 - Bestätigung senden

Type / Role: n8n-nodes-base.telegram - telegram
Config choices: Version 1.2

Block 6 - Get a file

Type / Role: n8n-nodes-base.telegram - telegram
Config choices: Version 1.2

Block 7 - Message a model

Type / Role: @n8n/n8n-nodes-langchain.openAi - openAi
Config choices: Version 1.8

Block 8 - Check if Audio file

Type / Role: n8n-nodes-base.if - if
Config choices: Version 2.2

Block 9 - Set field

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

3. Summary Table

Workflow	Convert Telegram voice messages to Google Docs with Whisper & GPT-4o tagging
Complexity	intermediate
Nodes	9
Categories	Internal Wiki, AI Summarization
Author	Julian Reich
Published	01 Sept 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/8117/8117.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source Internal Wiki workflows AI Summarization workflows

Frequently asked questions

What does Convert Telegram voice messages to Google Docs with Whisper & GPT-4o tagging do?

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your Internal Wiki, AI Summarization use case.

Julian Reich

3 workflows

Nodes

n8n-nodes-base.telegramtrigger @n8n/n8n-nodes-langchain.openai n8n-nodes-base.function n8n-nodes-base.googledocs n8n-nodes-base.telegram n8n-nodes-base.if n8n-nodes-base.set

Complexity

intermediate

Published 01 Sept 2025

Likes 0

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Install path: /data/workflows/8117/8117.json

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Convert Telegram voice messages to Google Docs with Whisper & GPT-4o tagging

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

Good to know

How it works

How to use

Requirements

Customising this workflow

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Telegram Sprachnachricht Empfang

Block 2 - OpenAI Whisper Transkription

Block 3 - Text formatieren

Block 4 - In Google Doc speichern

Block 5 - Bestätigung senden

Block 6 - Get a file

Block 7 - Message a model

Block 8 - Check if Audio file

Block 9 - Set field

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions