Reply to Telegram text and voice messages with an OpenAI GPT-4o-mini chatbot and memory

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1. Workflow Overview

Quick Overview This workflow listens for incoming Telegram messages, sends each message to an OpenAI chat model via an AI agent with per chat memory, and replies in the same Telegram conversation w...

Best for

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

Tools used

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

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: Reply to Telegram text and voice messages with an OpenAI GPT-4o-mini chatbot and memory
Workflow name: Reply to Telegram text and voice messages with an OpenAI GPT-4o-mini chatbot and memory

Quick Overview

This workflow listens for incoming Telegram messages, sends each message to an OpenAI chat model via an AI agent with per-chat memory, and replies in the same Telegram conversation with a concise, language-matched response.

How it works

Triggers when a new Telegram message is received by your bot.
Sends the message text to an AI chatbot agent configured with a system prompt to respond concisely in the user’s language.
Uses the OpenAI GPT-4o-mini chat model to generate the response and a per-chat memory buffer keyed by Telegram chat ID to retain recent context.
Posts the generated reply back to the originating Telegram chat.

Setup

Create a Telegram bot with BotFather, then add your Telegram bot credentials to the Telegram Trigger and Telegram reply nodes.
Add your OpenAI credentials and select the desired model in the OpenAI chat model node.
Ensure the workflow has access to store conversation context and adjust the memory window length or system message if needed.

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 - Sticky Note

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

Block 2 - Sticky Note1

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

Block 3 - Sticky Note2

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

Block 4 - Sticky Note3

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

Block 5 - Sticky Note4

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

Block 6 - When Message Received

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

Block 7 - If Voice Message

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

Block 8 - Download Telegram Voice

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

Block 9 - Transcribe Voice with OpenAI

Type / Role: @n8n/n8n-nodes-langchain.openAi - openAi
Config choices: Version 1.4

Block 10 - AI Conversation Agent

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 1.7

Block 11 - OpenAI Chat Model

Type / Role: @n8n/n8n-nodes-langchain.lmChatOpenAi - lmChatOpenAi
Config choices: Version 1.2

Block 12 - Manage Conversation Memory

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

Block 13 - Fetch Information from Wikipedia

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

Block 14 - Perform Calculations

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

Block 15 - Send Response via Telegram

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

Block 16 - Append Log to Sheets

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.5

3. Summary Table

Workflow	Reply to Telegram text and voice messages with an OpenAI GPT-4o-mini chatbot and memory
Complexity	advanced
Nodes	16
Categories	Support Chatbot, AI Chatbot
Author	TakatoYamada
Published	30 May 2026

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/16023/16023.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 Reply to Telegram text and voice messages with an OpenAI GPT-4o-mini chatbot and memory 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.

TakatoYamada

14 workflows

Nodes

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

Complexity

advanced

Published 30 May 2026

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/16023/16023.json

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Reply to Telegram text and voice messages with an OpenAI GPT-4o-mini chatbot and memory

Workflow preview

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

Quick Overview

How it works

Setup

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Sticky Note

Block 2 - Sticky Note1

Block 3 - Sticky Note2

Block 4 - Sticky Note3

Block 5 - Sticky Note4

Block 6 - When Message Received

Block 7 - If Voice Message

Block 8 - Download Telegram Voice

Block 9 - Transcribe Voice with OpenAI

Block 10 - AI Conversation Agent

Block 11 - OpenAI Chat Model

Block 12 - Manage Conversation Memory

Block 13 - Fetch Information from Wikipedia

Block 14 - Perform Calculations

Block 15 - Send Response via Telegram

Block 16 - Append Log to Sheets

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