AI PDF copilot for people who still want to do the thinking
Navigate and understand all of PDFs including images, tables, equations and more
Everything about reading a paper, made faster.
Read
A fast, native, keyboard-driven reader built for long papers, with buffers, split views, and a command palette so you rarely reach for the mouse. Hover a citation to preview where it points, or an equation to copy its LaTeX.
Understand
Ask a question and the assistant answers on the page. It jumps to the passage and highlights the exact lines, so you can follow the argument rather than skim a summary. Every highlight lands on real text you can check yourself.
Find
Search across every paper you’ve read, by meaning or by exact wording, or grep a single document and jump straight to the hit. Each PDF is processed once and stays searchable, so your library gets more useful over time.
How it works
Plum turns a PDF into something both your reading and your AI can actually work with.
Open any PDF
Plum builds a structured, searchable model of it: layout, text, equations, references, and embeddings.
Ask, read, find
The assistant works over that model to answer on the page, and search runs across your whole library.
Use the AI you already have
Plum can run on your own AI. Connect a tool like Claude or bring your own key, so you’re never locked to one provider.