Highlight every meaningful difference between two versions of a document, with a plain-English summary plus a side-by-side annotated view of every change.
Pro AI tools send document content to xAI.
Compare Docs is a Pro feature — included in PDFwarp Pro at $9 USD/month along with every other tool and unlimited conversions.
Two uploads are extracted independently, each truncated to 6,000 characters, and sent together to xAI. The model returns a structured report (Summary, Key Differences, Additions in document 2, Removals from document 1, Unchanged). That report is shown on the page — there is no redline PDF. Order matters: file 1 is 'before', file 2 is 'after'. Pro only.
Compare a .docx against a .pdf, or two PDFs against each other. Format chrome (headers, page numbers) usually drops out of the extract, which cuts false positives.
'The party may terminate' vs 'The party shall terminate' is the kind of change a plain text diff buries. Still verify the quote against the source — models paraphrase.
The report describes what changed going from Document 1 to Document 2. Swap the files and the additions/removals invert.
validate_files requires both uploads. Each side is extracted with the 15k helper, then sliced to 6,000 characters in the user message so the pair fits. Filenames are not sent to the model (they can contain personal data); they are returned to you in the JSON only.
The system prompt names the five H2s. max_tokens is 3000. A failure from xAI surfaces as a generic error — we do not log the document bodies.
Moved logos, changed fonts, and reflowed pages will not show up unless the words changed. That is the point for contract review and the limitation for design QA.
The prompt asks for additions, removals, changed wording, and unchanged sections. It is a language-model comparison, not a guaranteed legal redline.
Yes — a PDF against a Word file works because only extracted text is compared.
No. You get a written report. For a native redline, use Word's Compare on two .docx files.
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