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🤖 Telegram AI Voice & Text Assistant Workflow

This n8n workflow turns Telegram into a full AI assistant that can handle voice messages, text messages, and approvals, using OpenAI for reasoning, transcription, and audio generation.

Approval Workflow 👇👇

🔹 1. Telegram Trigger

  • The workflow starts when a new Telegram update is received

  • Supports:

    • 🎙 Voice messages

    • 💬 Text messages

    • ✅ Approval-type interactions

🔹 2. Message Type Detection (Switch Node)

  • A Switch (Rules) node checks the incoming message type:

    • Voice

    • Text

    • Approval / Event-based data

Each type follows a different processing path.

🔹 3. Voice Message Processing

🎙 Voice → Text

  1. Get a voice message (Telegram – get file)

  2. Transcribe recording using OpenAI (speech-to-text)

  3. Edit fields to clean and format the transcription

The transcribed text is then sent to the AI Agent.

🔹 4. Text Message Processing

  • Text messages are:

    • Retrieved directly

    • Cleaned and normalized via Edit Fields

  • Sent straight to the AI Agent for reasoning

🔹 5. AI Agent (Core Brain)

  • The AI Agent uses an OpenAI Chat Model

  • It:

    • Understands user intent

    • Decides how to respond

    • Chooses between text or voice output

  • Supports memory and tool usage for more advanced behavior

🔹 6. Conditional Output Logic (If Node)

After the AI Agent responds:

  • If output is text → send a Telegram text message

  • If output is audio:

    1. Generate audio using OpenAI (text-to-speech)

    2. Convert to binary audio data

    3. Send the audio file back to Telegram

🔹 7. Approval & Event Handling (Optional Path)

  • Approval data is:

    • Manually structured

    • Routed via event-type logic

    • Sent to an external service using an HTTP Request

  • Useful for workflows that require confirmation before execution

🚀 What This Workflow Enables

✅ Telegram AI voice assistant
✅ Voice → text → AI reasoning → voice reply
✅ Text-based AI chat
✅ Multi-modal AI (text + audio)
✅ Approval-based automation
✅ Fully automated Telegram bot logic

💡 Ideal Use Cases

  • Personal AI assistant on Telegram

  • Customer support bot

  • Voice-controlled automation

  • AI agents with approval flows

  • Multi-modal chatbots