It has a chat interface, but also lets you split the window into different sub-windows that can open different interfaces, like a Jupyter notebook (with a working kernel), a code editor, or a file browser. You can also ask the agent to create custom interfaces, like a protein structure visualizer, or an SQLite viewer, or just a simple place to manage your citations.

Under the hood it's running on your local Claude Code instance, I'll probably be adding support for other APIs through Open Router soon.