Track & query expenses via Telegram with GPT-4.1 mini & Google Sheets

Description

Track and query your expenses effortlessly through Telegram using voice or text messages. This AI-powered workflow transcribes voice input via AssemblyAI, processes transactions with a GPT-4.1 mini agent, stores data in Google Sheets with comprehensive timestamp metadata, and responds with both voice and text confirmations.

Key Features: - Multi-modal input: Send expenses via voice messages or text - Intelligent processing: AI agent automatically categorizes transactions, calculates running balance, and handles multiple expenses in a single message - Conversational queries: Ask questions like "What did I spend on food last week?" - Voice responses: Get spoken confirmations using OpenAI TTS - Smart alerts: Automatic Gmail notifications for low balance thresholds - Cost tracking: Monitors and logs all API usage costs (LLM + TTS) in USD and INR

Perfect for: - Personal finance management with minimal effort - Small business expense tracking with audit trails - Shared household or team budgets - API cost monitoring for developers

Each transaction includes detailed metadata (timestamps, categories, run IDs, source text) enabling powerful time-based analytics and queries.

Requirements: Telegram bot, Google Sheets OAuth, OpenAI API key, AssemblyAI API key, Gmail OAuth (optional)

Support: Join [n8n Discord](https://discord.com/invite/n8n) or [Community Forum](https://community.n8n.io/) README file available at https://drive.google.com/file/d/1mh9FRm7zemdazNpjyEq9uhHSc9go7PN/view?usp=sharing