AI WhatsApp Chatbot with GPT-4o using n8n Automation

This n8n automation flow enables a smart WhatsApp chatbot using the latest OpenAI GPT-4o-mini model. Incoming messages are received via WhatsApp Business API, processed using AI via LangChain integration, and responded automatically in real time.

This setup also includes memory buffering for contextual replies and logic checks to handle only valid user inputs. Perfect for businesses looking to scale support without the high cost or limitations of Make.com.

Whether you're migrating from Make.com or looking for a more flexible alternative, this flow is optimized for fast deployment and easy customization.

Use Cases

Automated customer support on WhatsApp
Lead qualification via chat
FAQ bots for businesses
Smart AI assistant integration with WhatsApp

Key Features

Uses OpenAI GPT-4o-mini for accurate, natural responses
Seamless WhatsApp Business API integration
Conversation memory via LangChain buffer
Modular design, easy to modify
Can be scaled or customized to match any business workflow
Fully Make.com compatible logic design

Tech Stack

Platform: n8n
AI Model: GPT-4o-mini
Messaging: WhatsApp Business Cloud API
Integration: LangChain
Deployment: Self-hosted or n8n cloud

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A plug-and-play WhatsApp AI Chatbot built with n8n and OpenAI GPT-4o. Ideal for automating customer conversations with human-like responses.

Platform

n8n

AI Model

OpenAI GPT-4o-mini

Messaging Platform

WhatsApp Business Cloud API

Memory

LangChain Buffer Memory

Workflow Type

AI chatbot, automated reply system

Use Cases

Customer support, lead qualification, AI-driven chat automation

Skill Level Required

Beginner to Intermediate (no-code/low-code)

Deployment Time

15 minutes

Integration Ready

CRMs, Google Sheets, Notion, Airtable, Webhooks

n8n Version Required

v1.3+

Hosting Option

Self-hosted or n8n Cloud