Multilingual voice & text Telegram bot with ElevenLabs TTS and LangChain agents

This workflow contains community nodes that are only compatible with the self-hosted version of n8n.

Telegram Voice AI Assistant This n8n template creates a multimodal Telegram bot that dynamically responds to users:

- Replies with voice when receiving voice messages (using ElevenLabs TTS)

- Replies with text for text-based queries

- Supports custom AI tools (e.g., crypto APIs, databases, or custom functions)

Built with LangChain Agents, it can integrate any external API or data source into conversations.

Key Features 🎙️ Smart Response Logic - Voice Query? → Voice Reply 1. Transcribes audio via ElevenLabs STT 2. Processes with AI (Groq/Gemini) 3. Converts text response to natural speech (ElevenLabs TTS)

- Text Query? → Text Reply Bypasses TTS/STT for faster responses