* The quality of project resources that you're working with. You use your actual textbooks from class, the quality would be higher. Some random articles online, the quality would be worse. You have complete control over the source material that the LLM uses as context.
* The specific model that you're working with. The system is model-agnostic, you can bring your favorite model.
On privacy, I plan to make this a local-first application where you can bring your own LLM API key from any provider, and the API calls are made from your own machine to your LLM provider. In addition to a 3rd party LLM provider, you can use a local model running on your machine for maximum privacy. This is also the easiest way to ensure user ownership of their educational material.