Pros:
1) Beautiful UI/UX Design: I love the fact that it 'does' look like my own digital library. I can name "collection" on the left side bar. Very intuitive and easy to navigate.
2) Video transcription: It can access Youtube, produces transcription, and you can 'chat' with the video.

Cons:
1) Free alternatives: NotebookLM and ChatPDF. In fact, I tried the same exact prompts in NotebookLM (Gemini) - they produced better summary, insights, blog content, and even podcast.

As my purpose is only on 'chatting with documents', NotebookLM is sufficient for me.

I really like the user interface of IKI.AI though. If they integrate with Gemini I might return.