I'm very impressed by the models, to the point I was wondering if they were really converting the pdf or just reading the content. I tried on documents in french, english and spanish, very heaving on graphics and with complex layouts (boardgame, flyer, book about rust), and I wasn't expecting anything great. Especially some models were showing symbols and smileys quite close from the original.
I noticed that some models were resisting better to faking data than other, especially I saw that in a sentence cut from the document, GPT5 was inventing the end of the sentence and opus was properly showing it cut.
I didn't try with my writing but in the playground there is one example and some models read it better than me.
I wish the output would show the confidence of the model on each part. I think it would help immensely.
Note that sometimes a model get stuck in a loop, preventing to vote and to see which model is which