# Which paper said that? Ask.

> Literature review: 60 PDFs and you cannot remember which one said what.

Source: https://plexiidesk.com/use-cases/which-paper-said-that-ask
For: PhD student
How it feels: Despair. What you want instead: Grounded.
Updated: 2026-10-16

## The problem

Dozens of PDFs, notes in a spreadsheet and the supervisor’s feedback in email. Citing from memory feels risky.

## How Plexii handles it

Add the PDFs to Files and Ask Brain; Plexii answers from them with numbered citations that open the source. A Table tracks each paper’s method and finding.

This uses Plexii’s AI, which runs on Plexii credits or your own Anthropic key.

In short: Ask a question across your reading and get an answer with numbered sources that open the paper. Then read the paper. Plexii shows you where to look.

## Step-by-step guides

- [Build your knowledge base in Ask Brain](https://plexiidesk.com/help/brain-knowledge)
- [See what Plexii read: the trace and citations](https://plexiidesk.com/help/plexii-sources-and-trace)
- [Table widget](https://plexiidesk.com/help/widget-table)

Screenshot: https://plexiidesk.com/usecase-assets/shots/plexii-trace.a03e9f23d8.webp (A screenshot of the real app, with sample data.)