Multi-Modal Expense Tracking with GPT-4, Gemini OCR, and Voice via Telegram

Description

This n8n template creates an intelligent expense tracking system 🤖 that processes text, voice, and receipt images through Telegram. The assistant automatically categorizes expenses, handles currency conversions 🌍, and maintains financial records in Google Sheets while providing smart spending insights 💡.

Use Cases:

🗣️ Personal expense tracking via Telegram chat
🧾 Receipt scanning and data extraction
💱 Multi-currency expense management
📂 Automated financial categorization
🎙️ Voice-to-expense logging
📊 Daily/weekly/monthly spending analysis

How it works:

Multi-Input Processing: Telegram trigger captures text messages, voice notes, and receipt images.
Content Analysis: A Switch node routes different input types (text, audio, images) to appropriate processors.
Voice Processing: ElevenLabs converts voice messages to text for expense extraction.
Receipt OCR: Google Gemini analyzes receipt images to extract amounts and descriptions.
Expense Classification: An LLM determines if the input is an expense or a general query.
Expense Parsing: For multiple expenses, the AI splits and normalizes each item.
Currency Conversion: An exchange rate API converts foreign currencies to USD.
Smart Categorization: The AI agent assigns expenses to predefined categories with emojis.
Data Storage: Google Sheets stores all expense records with automatic totals.
Intelligent Responses: The agent provides spending summaries, alerts, and financial insights.

Requirements:

🌐 Telegram Bot API access
🤖 OpenAI, Gemini, or any other AI model
🗣️ ElevenLabs API for voice processing
📝 Google Sheets API access
💹 Exchange rate API access

Good to know:

⚠️ Daily spending alerts trigger when expenses exceed 100 USD.
🏷️ Supports 12 predefined expense categories with emoji indicators.
🔄 Automatic currency detection and conversion to USD.
🎤 Voice messages are processed through speech-to-text.
📸 Receipt images are analyzed using computer vision.

Customizing this workflow:

✏️ Modify expense categories in the system prompt.
📈 Adjust spending alert thresholds.
💵 Change the base currency from USD to your preferred currency.
✅ Add additional expense validation rules.
🔗 Integrate with other financial platforms.