AI Document Editor Tool Recommendations

Looking for a guidance around the best AI document editing tools / platforms, that can help me in creating and editing some reports / documentation.

Ideally a tool where I can edit the document/text, but also ask the AI to revise / improve. It should be able to handle like 15-20 pages, and also I’d like to be able to give it some reference / contextual documents to act as knowledge which it can draw on.

I previously used GPT Canvas before it was deprecated (and it struggled with longer lengths) and Gemini Canvas is a little clunky.