WhatsApp AI Support Assistant (GPT-4o-mini) with n8n + Google Sheets

Turn WhatsApp messages into instant AI replies—then seamlessly escalate when humans (or images) are needed

This WhatsApp AI Support Assistant (GPT-4o-mini) with n8n + Google Sheets workflow listens to incoming WhatsApp messages, generates helpful responses using an OpenRouter (openai/gpt-4o-mini) AI Agent, and logs every interaction to Google Sheets. If the customer sends an image or requests a human, it notifies your team via Gmail and records the incident.

What this workflow does

• Receives WhatsApp messages through a WhatsApp webhook trigger.
• Enriches and classifies the message (normal chat vs. image vs. human-agent request), including extracting the message text and detecting the language.
• Handles images / human-agent requests by emailing the team with Gmail, sending an acknowledgment back to the customer on WhatsApp, and appending the incident to Google Sheets.
• Replies with AI for normal chats using an AI Agent powered by OpenRouter (openai/gpt-4o-mini), with conversation memory to keep context.
• Optional escalation during AI chats via a built-in “notify_human” tool that triggers a Gmail notification workflow.
• Logs all conversations to Google Sheets with timestamp, customer number, detected language, and a summary.

Use cases

• SaaS operators who want 24/7 WhatsApp support without losing accountability (Google Sheets logs).
• Automation engineers building a customer support intake pipeline that detects images and routes them to the team.
• Businesses that need fast AI replies for FAQs, but must escalate when a human is requested.

Technical details

• WhatsApp (Meta Business Platform): webhook trigger + WhatsApp send nodes (use your WhatsApp Phone Number ID).
• OpenRouter: AI Agent using openai/gpt-4o-mini with conversation memory.
• Gmail: email team notifications for image/human requests and the notify_human escalation tool.
• Google Sheets: appends interaction records (timestamp, number, language, summary).
• Core logic includes nodes such as if, set, code, and supporting nodes (e.g., sticky note) for configuration.