Are there any AI-enhanced solutions for converting PDFs to ePub?

I read numerous scholarly articles and papers, primarily in PDF format and occasionally in scanned book form. I'm curious if anyone here is aware of an OCR solution, possibly utilizing AI enhancements, to convert these documents into ePub format? I've found that tools like Calibre often struggle with preserving the formatting. It strikes me that the potential of ePub and E-ink readers is so underestimated in the whole software universe.