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How Plum compares

Most tools do one thing: chat about a paper, manage a library, or render a PDF. Plum combines them into a native, keyboard-first reader whose assistant answers on the page and searches everything you’ve read.

Plum Chat-with-PDF tools ChatPDF, Humata, SciSpace, AskYourPDF AI notebooks & assistants NotebookLM, ChatGPT, Claude, Perplexity Reference managers Zotero, Mendeley, Papers, EndNote PDF readers PDF Expert, Skim, Preview, zathura, sioyek
Built-in AI assistant that highlights only real text you can verify Full support Partial Partial Partial
Answers on the page (jumps to the passage, highlights the lines) Full support
Native, keyboard-first reading environment Full support Partial
Semantic search across your whole library Full support Partial Partial Partial
Bring your own AI (connect Claude or your own key) Full support
Private by default (reads local files, no upload to a chatbot) Full support

✓ built in · Partial limited or varies by tool · – not available

Where Plum is different

Other AI tools keep the conversation in a side panel: you read the answer, then hunt for where it came from. Plum works differently. Ask a question and it jumps to the passage and highlights the exact lines, so you can verify at a glance. It highlights only text it actually found, and searches every paper you’ve uploaded. It also runs on the AI you already use, so you’re never locked to one provider.

Works with your reference manager

Zotero and Mendeley aren’t rivals. Keep your library and citations there, and open those same PDFs in Plum to read them without migrating anything.

Download for Mac

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