To use ChatUML, begin by describing your system, ideas, or user flows in plain English. The platform's AI assistant will then generate detailed and accurate diagrams based on your input. For beginners, the chat-based AI assistance mode allows you to interact naturally, describing your ideas and requesting modifications as needed. Advanced users familiar with PlantUML can opt for the integrated code editor mode, where they can directly work with PlantUML code while still receiving AI assistance for modifications. This dual approach facilitates brainstorming, visualization, and refinement of complex designs with AI-guided clarifications, ultimately enhancing collaboration and documentation accuracy. The tool also facilitates real-time team collaboration, allowing users to refine and iterate on diagrams seamlessly. ChatUML supports a wide array of diagram types, including use case, class, component, sequence, activity, state, interaction, C4 Model, flowcharts, and network diagrams. You can instantly visualize your UML diagrams in real-time with live previews and code generation. Once satisfied, diagrams can be exported in various formats such as PNG, SVG, and PDF for easy sharing and documentation. The platform also provides extensive documentation and tutorials to help you maximize its capabilities. For enhanced flexibility, ChatUML offers access to multiple cutting-edge AI models, including GPT-4o Mini and GPT-4o, allowing you to choose the best model for specific tasks, from initial brainstorming to precise technical generation. Important Note for Existing Users: ChatUML is scheduled to shut down its services on April 30, 2026. All existing users are strongly advised to log in and export their diagrams and project information before this date to ensure no data loss.