Pick ChatPDF if
students and analysts who want Q&A on a PDF they already have.
Read the ChatPDF pageChatPDF vs Julius
Our take
Pick ChatPDF if students and analysts who want Q&A on a PDF they already have. Pick Julius if analysts who will upload a sheet and pay Plus when the Free daily credits run out. Skip ChatPDF if people who need a citation graph (Connected Papers) or a paper-search agent (Elicit). Skip Julius if people who want a cited paper assistant (Elicit) or a general chat (ChatGPT).
ChatPDF
signed-out PDF chat
Best for
ChatPDF Talk to one document in the browser without an account
Julius Ask a question of a spreadsheet or CSV
Free plan
ChatPDF $0 · to start a chat; history save wants Sign up. Exact Free page/question caps are not printed on the modal
Julius $0 · 25 daily credits plus 75 welcome credits on the public card
Lowest paid
ChatPDF Plus (yearly) $6.42
Julius Plus $20/mo yearly, or $20 monthly
Next step up
ChatPDF Plus (monthly) $15.99
Julius
Coding agent
ChatPDF
Julius Tool chips
Runs where
ChatPDF
Julius Hosted
Watch out
ChatPDF Dollars live on the Plus modal
Julius Free is 25 credits/day
Last checked
ChatPDF 2026-10-20 · chatpdf.com
Julius 2026-10-21 · julius.ai/pricing
Which one, then?
Pick Julius if
analysts who will upload a sheet and pay Plus when the Free daily credits run out.
Read the Julius page