Comment by llm_nerd

Complex documents is where OCR struggles mightily. If you have a simple document with paragraphs of text, sure OCR is pretty solved. If you have a complex layout with figures and graphs and supporting images and asides and captions and so on (basically any paper, or even trade documents), it absolutely falls apart.

And GP LLMs are heinous at OCR. If you are having success with FL, your documents must be incredibly simple.

There has been enormous advances in OCR over the past 6 months, so the SoTa is a moving, rapidly advancing target.