Hey there,

The platform looks really impressive. I still have a few questions and would be very grateful if you could kindly clarify:

1. Can I interact with multiple PDFs and/or YouTube videos at once, or only one at a time?
2. Are mind maps editable and exportable as Markdown?
3. What is the maximum upload size for text files, and are they stored or only used in the chat?
4. Any plans to expand the learning companion with new features?
5. Any plans for a slides presentation tool?
6. Is BYOK be available via OpenRouter?
7. Is there a dark mode available?
8 Any plans for MCP features?

For a single heavy user, is Tier 4 enough for extensively using advanced models and image generation without running out of credits very often?

Thank you again, and congratulations on the initiative.

Henrique