Run a voice-enabled AI assistant on Telegram with OpenAI, Gmail and Notion

by Dr. Firas ✓ · 106 views · created 2026-07-13 · Personal Productivity, AI Chatbot

What this workflow does

This AI workflow has 17 nodes and runs on Telegram events (message). Along the way it connects Telegram, OpenAI, OpenAI Chat Model and Gmail and 3 more.

How it runs

Trigger: On Telegram events (message).

1. Configuration (Edit Fields (Set)): sets 6 fields: assistant_name, chat_model, output_language…
2. Is voice message? (If): checks a condition and branches into true / false
3. Get voice file (Telegram): work with file
4. Prepare text input (Edit Fields (Set)): sets 1 field: user_input
5. Transcribe voice (OpenAI): transcribe (audio)
6. Nova (AI Agent): runs an AI agent, with model: OpenAI Chat Model; 5 tools (Get Notion tasks, Get recent emails, Get Notion contacts, Get calendar events…); memory: Simple Memory
7. Prepare voice input (Edit Fields (Set)): sets 1 field: user_input
8. Send reply on Telegram (Telegram): uses Telegram

Services it uses

TelegramOpenAIOpenAI Chat ModelGmailGoogle CalendarNotionTelegram Hitl

Before you upgrade to n8n 3.0

Nodes used (12)

• Telegram Triggern8n-nodes-base.telegramTrigger
• Edit Fields (Set)n8n-nodes-base.set
• Ifn8n-nodes-base.if
• Telegramn8n-nodes-base.telegram
• OpenAI@n8n/n8n-nodes-langchain.openAi
• AI Agent@n8n/n8n-nodes-langchain.agent
• OpenAI Chat Model@n8n/n8n-nodes-langchain.lmChatOpenAi
• Simple Memory@n8n/n8n-nodes-langchain.memoryBufferWindow
• Gmail Tooln8n-nodes-base.gmailTool
• Google Calendar Tooln8n-nodes-base.googleCalendarTool
• Notion Tooln8n-nodes-base.notionTool
• Telegram Hitl Tooln8n-nodes-base.telegramHitlTool

From the author

Quick overview This workflow turns a Telegram bot into a personal assistant that handles text and voice messages using OpenAI, can read Gmail and Google Calendar, looks up tasks and contacts in Notion, and can draft and send emails with a required approval…

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