There are several AIpowered diagram and chart generation tools available、Here are a few options:

1、Diagram.net (formerly Draw.io): It's a free online tool that allows you to create diagrams, flowcharts, and other types of charts、It has an AI feature that can generate diagrams based on your input.

2、Lucidchart: This is a more advanced tool that offers AI suggestions for diagram layouts and designs、It integrates with various platforms like Google Workspace and Microsoft Office.

3、Miro: Miro is a collaborative whiteboard platform that includes AI features to help you create diagrams and other visual aids、

4、SmartDraw: This tool provides an AIpowered diagramming software that can automatically arrange shapes and connectors in your diagrams.

5、DiaGen: This is a tool specifically designed for generating class diagrams from code.

6、Mermaid Live Editor: While not exclusively AIdriven, it uses a simple markup language to generate diagrams, including class diagrams.

7、PlantUML: It's a powerful tool that can generate diagrams from text specifications.

8、UMLet: An easytouse tool for creating UML diagrams, including class diagrams、

9、Microsoft Visio: It doesn't use AI to generate diagrams, but its Quick Shapes feature can be quite helpful、

Please note that while these tools offer automation and suggestions, they may not fully automate the process of creating class diagrams、You'll likely still need to input some information yourself.

Remember, while these tools can be very helpful, they work best when you have a good understanding of what you want your diagram to look like.