In this tutorial, ‘warpdotdev’ demonstrates how to create and fine-tune AI workflows using n8n with a focus on integrating large language models (LLMs). The video begins with an introduction to the basic LLM chain in n8n, explaining how to set up a workflow that utilizes AI models for various tasks. Viewers learn how to add nodes for AI models, configure prompts, and manage user messages. The tutorial covers practical use cases such as sentiment analysis, where the LLM determines the sentiment of user reviews. Witteveen emphasizes the importance of structured outputs and demonstrates how to expose LLM chains through API endpoints. The video also showcases how to enrich data and automate responses based on user input, making it a comprehensive guide for developers looking to leverage AI in their workflows. By the end, viewers gain insights into the capabilities of n8n and how to effectively use it for AI-driven automation.