Zirn app showing notes, sources, and an AI answer drawn from your own files

Turn your notes and PDFs into answers.

Upload notes, papers, articles, and documents. Zirn helps you search them, ask questions, and reconnect ideas without rereading everything.

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Private local context. Strong AI reasoning when you need it.

Zirn keeps your knowledge structured on your device and uses AI to help you search, summarize, recall, and get source-grounded answers across your own files.

context that lasts

Your workspace remembers context.

When you add PDFs, articles, and notes, Zirn keeps more than the files. It keeps how they connect, what you were working on, and why they mattered. At the center is the .brain file — the system that links your notes, sources, preferences, and relationships so you can pick up where you left off without starting over.

ask across your library

Ask questions across your own research.

Ask about PDFs, notes, articles, and saved sources instead of hunting through folders. Zirn answers from your material, so you spend less time searching and more time thinking.

Zirn Chat screenshot

search by meaning

Find ideas even when you forgot the exact words.

Zirn searches by meaning, not just keywords. Surface the note, passage, or source that answers your question — even when you only remember the idea.

Semantic Search screenshot

see the connections

See how your ideas connect.

The graph shows how notes, sources, topics, and research threads relate. Spot links you would have missed when everything lived in separate files.

Allegory graph screenshot

Pricing

Start free, grow when you need more.

Free

$0per month

Join waitlist
  • Try Zirn with a small workspace
  • 10 uploads
  • Core search and chat

Starter

$3per month

Join waitlist
  • More room for active projects
  • 50 uploads
  • Better AI models

Early

$5per month

Join waitlist
  • Access early features
  • Help shape what we build
  • 15 uploads

Pro

$10per month

Join waitlist
  • For heavy research workflows
  • Unlimited uploads
  • Everything in lower tiers

Join the waitlist

Be among the first to turn scattered notes, PDFs, and articles into a searchable AI workspace. First 10 users get the $10 tier free for 1 year.

You'll need a free Mistral account. How to get?

FAQ

Questions, answered.

Zirn is an AI knowledge workspace. Upload PDFs, articles, notes, and documents, then search them, ask questions, and get answers grounded in your own sources — without rereading everything.