Studio or Cloud — which should I use?

Use Studio for real projects. It is the desktop app for macOS, Windows, and Linux. It works with online AI providers without a graphics card, and it can run supported AI models on your own computer if the hardware is strong enough. Cloud runs in your web browser and is in alpha, an early test version, so use it to try NodeTool. Moving projects between Cloud and Studio may not cover everything during the alpha, so check that the move you need works before you rely on it.