The community member who posted the original post asked if anyone has tried using the marker-pdf library, and they think it might be the "secret sauce" for Llamaparse. In the comments, another community member expressed skepticism about the "secret sauce" claim, while another suggested that Llamaparse is using fine-tuned VLMs for images and that the library is doing most of the work. A third community member confirmed that Llamaparse is not using the marker-pdf library, but is built entirely in-house.