Just a joke, relax.
AI Learning companion
This can be done with LLMs manually, but here are some additional services. You can discuss the text with companion.
Another project assistant for videos
You can ask questions about video, summarize, etc. (actually transcript is used). Delays with speech-2-text (Wispher API)
Yet another project: book writing assistant
All these projects are built on top of OpenAI API… nothing special