💬 Multimodal chat assistant with GPT-4o for text, images, and PDFs
⚡ 11,041 views · 💬 Support Chatbots
Description
Chat with thing
This n8n template lets you build a smart AI chat assistant that can handle text, images, and PDFs — using OpenAI’s GPT-4o multimodal model. It supports dynamic conversations and file analysis, making it great for AI-driven support bots, personal assistants, or embedded chat widgets.
🔍 How it Works
- The chat trigger node kicks off a session using n8n’s hosted chat UI.
- Users can send text or upload images or PDFs — the workflow checks if a file was included.
- If an image is uploaded, the file is converted to base64 and analyzed using GPT-4o’s vision capabilities.
- GPT-4o generates a natural language description of the image and responds to the user’s question in context.
- A memory buffer keeps track of the conversation thread, so follow-up questions are handled intelligently.
- OpenAI’s chat model handles both text-only and mixed media input seamlessly.
🧪 How to Use
- You can embed this in a website or use it with your own webhook/chat interface.
- The logic is modular — just swap out the
chatTriggernode for another input (e.g. form or API). - To use with documents, you can modify the logic to pass PDF content to GPT-4 directly.
- You can extend it with action nodes, e.g. saving results to Notion, Airtable, or sending replies via email or Slack.
🔐 Requirements
- Your OpenAI GPT-4o API key
- Set File Upload on the chat
🚀 Use Cases
- PDF explainer bot
- Internal knowledge chat with media support
- Personal assistant for mixed content
🔗 Nodes Used
AI Agent, Basic LLM Chain, OpenAI Chat Model, Simple Memory, Chat Memory Manager, Chat Trigger
📥 Import
Download workflow.json and import into n8n:
Workflow menu → Import from File