Build a voice & text Telegram Bot with GPT-4.1-Mini and Gemini transcription

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Important notice

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

1. Workflow Overview

How it works: This Telegram automation works with voice and text messages given to the Telegram bot, and it returns the response in voice form if the input is in voice form. If the input is in text...

Best for

Support Chatbot automation workflows
AI Chatbot automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.telegramtrigger, @n8n/n8n-nodes-langchain.agent, @n8n/n8n-nodes-langchain.lmchatopenai, @n8n/n8n-nodes-langchain.memorybufferwindow, n8n-nodes-base.telegram, n8n-nodes-base.if, @n8n/n8n-nodes-langchain.googlegemini, @n8n/n8n-nodes-langchain.openai

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Hussam Muhammad Kazim.

Original n8n.io source

1.1 Workflow description

Title: Build a voice & text Telegram Bot with GPT-4.1-Mini and Gemini transcription
Workflow name: Build a voice & text Telegram Bot with GPT-4.1-Mini and Gemini transcription

How it works: This Telegram automation works with voice and text messages given to the Telegram bot, and it returns the response in voice form if the input is in voice form. If the input is in text form, it will return a response in text form.

Use Cases:

Customer Support
Personal Chatbot

Prerequisites:

OpenAI API Key
Gemini API Key
Telegram Bot built by BotFather
Telegram Bot's API Key

Target Audience: AI Automation learners who want to learn how to build and set up a basic Telegram Bot using n8n.

How to set up:

Create a telegram bot using BotFather, and the BotFather will give you an API key
Copy the API key and set it up in a Telegram node inside n8n
Get a free gemini api from https://aistudio.google.com/
Set up the Gemini API in the Transcribe recording node
Get an OpenAI API key from https://platform.openai.com/docs/overview and make sure to top up your credits
Copy the API key from the OpenAI platform and set it up in any OpenAI Chat Model, and it will be configured for all other nodes automatically by n8n

That's it! Now you can activate the workflow and test it by sending a simple message to your Telegram bot

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 Trigger

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

Block 2 - AI Agent

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 3

Block 3 - OpenAI Chat Model

Type / Role: @n8n/n8n-nodes-langchain.lmChatOpenAi - lmChatOpenAi
Config choices: Version 1.3

Block 4 - Simple Memory

Type / Role: @n8n/n8n-nodes-langchain.memoryBufferWindow - memoryBufferWindow
Config choices: Version 1.3

Block 5 - Send a text message

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

Block 6 - If

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

Block 7 - Transcribe a recording

Type / Role: @n8n/n8n-nodes-langchain.googleGemini - googleGemini
Config choices: Version 1

Block 8 - Get a file

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

Block 9 - AI Agent1

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 3

Block 10 - Generate audio

Type / Role: @n8n/n8n-nodes-langchain.openAi - openAi
Config choices: Version 2.1

Block 11 - Send an audio file

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

Block 12 - Guardrails

Type / Role: @n8n/n8n-nodes-langchain.guardrails - guardrails
Config choices: Version 1

Block 13 - Send a text message1

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

Block 14 - OpenAI Chat Model1

Type / Role: @n8n/n8n-nodes-langchain.lmChatOpenAi - lmChatOpenAi
Config choices: Version 1.3

Block 15 - Sticky Note

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

Block 16 - Sticky Note1

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

Block 17 - Sticky Note2

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

3. Summary Table

Workflow	Build a voice & text Telegram Bot with GPT-4.1-Mini and Gemini transcription
Complexity	advanced
Nodes	17
Categories	Support Chatbot, AI Chatbot
Author	Hussam Muhammad Kazim
Published	21 Dec 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/12003/12003.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 Support Chatbot workflows AI Chatbot workflows

Frequently asked questions

What does Build a voice & text Telegram Bot with GPT-4.1-Mini and Gemini transcription 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 Support Chatbot, AI Chatbot use case.

Hussam Muhammad Kazim

1 workflow

Nodes

n8n-nodes-base.telegramtrigger @n8n/n8n-nodes-langchain.agent @n8n/n8n-nodes-langchain.lmchatopenai @n8n/n8n-nodes-langchain.memorybufferwindow n8n-nodes-base.telegram n8n-nodes-base.if @n8n/n8n-nodes-langchain.googlegemini @n8n/n8n-nodes-langchain.openai

Complexity

advanced

Published 21 Dec 2025

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/12003/12003.json

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Build a voice & text Telegram Bot with GPT-4.1-Mini and Gemini transcription

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Telegram Trigger

Block 2 - AI Agent

Block 3 - OpenAI Chat Model

Block 4 - Simple Memory

Block 5 - Send a text message

Block 6 - If

Block 7 - Transcribe a recording

Block 8 - Get a file

Block 9 - AI Agent1

Block 10 - Generate audio

Block 11 - Send an audio file

Block 12 - Guardrails

Block 13 - Send a text message1

Block 14 - OpenAI Chat Model1

Block 15 - Sticky Note

Block 16 - Sticky Note1

Block 17 - Sticky Note2

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