Pricing
Free to read. Pro to let your AI in.
The reader is free. Pro unlocks the cloud substrate (processing, search, and the assistant) that turns a folder of PDFs into a library your AI can actually use.
Reader
Free
The macOS app, forever free.
- Keyboard-driven PDF reader
- Open and read local PDFs
- Search, buffers, and command palette
- Use your own AI (bring your own key or tool)
Pro
Subscription
The cloud substrate that makes papers legible to AI.
- Cloud processing: layout, equations, references, embeddings
- Semantic + full-text search across your library
- The AI assistant with proven on-page highlights
- “Open in Plum” reference following
Plum is in early access, and Pro pricing is announced at launch. The free reader stays free.
Questions
Is Plum free?
The reader is free to download and use for local PDFs. A Pro subscription unlocks cloud processing, library search, and the AI assistant.
Do I pay extra for AI usage?
You can use your own AI (connect a tool like Claude or bring your own API key) at no extra cost, or use the built-in assistant included with Pro.
How much does Pro cost?
Plum is in early access and Pro pricing is announced at launch. Grab the reader now; you won’t lose access to what is free.