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Chat with a text-based PDF

Upload a text-based PDF up to 10 MB and ask about its contents. Lumi, tentus's AI assistant, generates answers that need checking against the original. Page-level citations are not provided. Tool access is being tested; sign-in is currently required.

Illustrative example

A teaching example, not a recorded result. Generated answers may differ.

Example input

A 24-page vendor contract PDF: pricing tables, renewal terms, a data-processing annex.

Illustrative output

Ask “When does the renewal window close?” — an answer with the clause it came from, quoted.

What happens to your PDF

Where it goes: The PDF is uploaded to tentus for text extraction. Extracted text within the stated limit, your question and recent conversation are sent through the configured AI service. For information about processing providers, see security.
Workspace storage: These tool requests do not create a source in your tentus workspace. Usage is recorded separately. This is not a guarantee about provider logging or retention.
Browser draft: Reloading clears the on-page conversation. Choosing to save it for tentus can store a draft in browser local storage for import after sign-in; that draft can remain until import or browser storage is cleared.
Limits: 10 MB per PDF, up to 200,000 extracted characters and 2,000 characters per question. Long documents are trimmed with a notice. Scanned PDFs may have no readable text; page boundaries are not preserved for citations.

This is one trick. tentus does the whole show.

tentus is a second brain for the sources you save. Lumi helps you retrieve context from your material; check the sources before acting.