Open Paper
A tool to extract insights from research papers and documents.
At a glance
Free + paid · Source review 2026-11-03- Price & billing
Base $0/month verified; Researcher $12/month with the billing cycle unstated, so no annual total is recorded; Teams is TBD and Coming Soon.
- Free allowance
Not separately confirmed. Check the current plan before relying on a free allowance.
- Best suited to
Researchers reading, annotating and questioning academic papers with cited AI answers across projects.
Fit is editorial guidance, not a measured result.- Platforms
Access: not separately verified. Operating systems not separately verified.
Published-source facts and editorial guidance. No product test is implied. Confirm current conditions before purchase.
No product screenshot is claimed for this listing. Use the official website ↗ to inspect the current interface.
What to know before choosing
Good fit
Researchers reading, annotating and questioning academic papers with cited AI answers across projects.
Limits and trade-offs
Base tier is tightly capped (10 uploads, 200 MB knowledge base, 5 audio overviews per week); Teams tier is not yet available.
Plans and free allowances
Base $0/month verified; Researcher $12/month with the billing cycle unstated, so no annual total is recorded; Teams is TBD and Coming Soon.
Evidence
Open Paper homepage ↗ (reviewed 2026-11-03), Open Paper pricing ↗ (reviewed 2026-11-03)
Official published documentation reviewed; not a product test
Dates: Last reviewed 2026-11-03. Last reviewed is the latest source or editorial review date; it is not a content-change date.
A closer look at Open Paper
Open Paper is an open-source AI research workbench for reading, annotating and understanding academic papers. Its AI assistant answers with clickable citations back to specific paper sections, and projects support cross-paper questions and structured data extraction. Pricing is freemium, with a $0 Base tier and a $12/month Researcher tier.
Editorial guidance based on published documentation. The workflow below is a suggested starting point, not a measured product result.
When to choose Open Paper
- Citation-grounded answers that can be clicked back to the source section, supporting verification.
- Project-level research across a whole collection, not just one paper at a time.
- A genuine $0 entry tier for getting started with research.
- Structured literature-review extraction with grounded cells and CSV export.
When to choose something else
- The free Base tier is tightly capped: 10 uploads, 200 MB knowledge base and 5 audio overviews per week.
- Even the paid Researcher tier caps uploads at 500 papers and the knowledge base at 3 GB.
- The Teams tier is not yet available; teams cannot buy it from this page.
A practical starting workflow
- Upload a paper to build a personal library.
- Read in the split-pane view and ask the AI assistant questions, following citations back to the source section.
- Highlight and annotate text, with annotations synced across devices.
- Group related papers into a project and ask cross-paper questions or generate artifacts.
- Define a custom schema to extract structured fields across the project and export to CSV.
Check before committing
- Price not fully verified: the pricing page states $12/month for Researcher without stating whether that is a monthly-billed or annual-billing figure, so no annual total is recorded.
- This page is based on public website text only (text fetch); the product was not run and no account was created.
- Minor naming inconsistency on the pricing page: the plan is headed 'Base' in the plan cards but 'Basic' in the feature-comparison table header; the card name 'Base' is used here.
- The pricing page text is short, so each price-fact context below reproduces the full pricing page text rather than 200 words on each side.
Common questions
What is Open Paper?
Open Paper is an AI research workbench for reading, annotating and understanding research papers, with an AI assistant that gives cited responses.
How do citations work in Open Paper?
Yes. The homepage describes a split-pane interface that keeps the paper and the AI chat visible at the same time, with clickable citations back to specific sections.
Can I research across multiple papers at once?
Yes. The homepage describes grouping related papers into projects, asking questions across the whole collection, and generating artifacts with verifiable citations.
Can I extract structured data from papers?
Yes. The homepage describes extracting structured data with custom schemas across a project and exporting to CSV.
Compare approaches for this task
- ChatPDF — Students, researchers, and professionals who need summaries and answers from long documents without reading every page.
- Scite — Researchers who want to inspect how later papers cite a study or check references for citation context and notices.
- Elicit — Researchers who want to structure academic searches, extract study details into a table, or export references for checking.
Sources and checks
Last source review is not a date of product testing. No rating or test result is implied by inclusion. Check the current plan and terms before buying.