Paperguide vs Zotero (2026): which should you pick?
As of Nov 12, 2026, Zotero grades higher than Paperguide: 2.8 against 2.6 out of 4.0.
Checked Oct 5, 2026 and Nov 12, 2026 · graded Oct 10, 2026 and Nov 12, 2026 by ToolGPA
Paperguide grades higher on features. Zotero grades higher on value for money and the free plan. They get the same grade on ease of use and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
Paperguide
AI research platform for literature and systematic reviews
Zotero
Free, open-source reference manager from a nonprofit
Which one is for you
Pick Paperguide if
- Fits if your team runs systematic reviews and needs every screening decision documented
- Works for students and academics, who get 30% off with a university email
Look elsewhere if
- Tight if you're staying free, with 20 AI searches and 2,000 credits a month, and no systematic reviews or shared workspaces
- Pricey if you need dual-reviewer screening, which sits on Evidence at $89 a seat a month billed annually
- Watch out: every AI feature draws on one monthly credit pool, 12,500 on Plus and 50,000 on Pro
- Skip it if you were counting on image and table extraction, as that's still marked coming soon
- Not for you if you want a phone or desktop app, as only a web app and browser extension are listed
Pick Zotero if
- Fits if you want a no-cost reference library that works with Word or Google Docs
- Works for a group that wants shared libraries on a nonprofit tool
Look elsewhere if
- Skip it if you want AI summaries or chat, as none is described on its pages
- Tight if you sync lots of PDFs: 300 MB is free, then $20 a year for 2 GB
- Watch out: group libraries draw on the group owner's storage
- Watch out: no web app is listed in the platforms
How we grade them
| 2.6GPAPaperguideGood | 2.8GPAZoteroGood | |
|---|---|---|
| Value for money | CPlus is $12 a seat a month billed annually, or $19 monthly, which is the middle of this category exactly. It does carry systematic reviews of up to 1,000 papers, unlimited AI searches and 12,500 credits a month, and a university email takes 30% off. Dual-reviewer screening is another matter: Evidence, at $89. | AThe app is free and open source, with every feature in the free version. Paid plans only buy storage: $20 a year for 2 GB, $60 for 6 GB and $120 for unlimited. |
| Free plan and trial | CFree gives you 2,000 AI credits and 20 AI searches a month, 500 MB of reference storage and extraction tables of up to 10 papers and 5 columns. Enough to learn the tool, not to run a project on: there are no systematic reviews and no shared workspaces. | BThe full app is free, with 300 MB of synced file storage. A few hundred PDFs will go past that, but you can use it unsynced. |
| Features | ATwo parts rivals like Elicit and Consensus don't list: screening that ends in a PRISMA diagram with dual-reviewer checking, and a full reference manager with 1,000-plus citation styles. Then AI search across 200 million papers, extraction tables, an agent and a writer. | CCollects from the web, collections, tags, saved searches, citations in your editor, sync and shared libraries. As an AI research tool it has a gap, since no built-in AI chat or summaries are described. |
| Ease of use | CNo store rating on record, and the work is front-loaded: a protocol to define for screening, columns to set up for extraction, and one monthly credit pool that every AI feature draws on. It does import a Zotero or Mendeley library, so your references don't start from nothing. | CNo store rating on record. You install the app, a browser connector and a word processor plug-in, and learn collections and tags. |
| Platforms and integrations | BA web app with a browser extension, plus a Search API at 10 requests a month on Free and 500 on Pro. It imports from Zotero and Mendeley and connects to Claude and ChatGPT. No phone or desktop app is listed, so that API is what earns the B. | BMac, Windows, Linux, iPhone and Android, with Word, LibreOffice and Google Docs. |
| Best for | search, references and reviews in one workspace | collecting and citing sources for free |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Paperguide and Zotero. How we grade
Price against what you get
Paperguide starts at $12 a month for each person and scores 3.0 out of 4 on features, ease of use and platforms. Zotero starts at $1.67 a month when paid by the year and scores 2.3.
Paperguide scores higher, and starts $10.33 a month higher: the question is whether the extra is worth that to you. Of the other AI research tools on the chart, none scores higher than Paperguide for less, and 2 score higher than Zotero for less.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Where they differ
- Zotero is open source, according to its own site.
- Paperguide also covers chat assistant, AI search, AI agents and long-form writing.
- Zotero also covers web clipper, highlights and file sync.
At a glance
| Paperguide | Zotero | |
|---|---|---|
| Pricing | Free plan | Free plan |
| Starts at | $12 per seat / month, billed annually ($8 with the academic discount) | $20 per year for 2 GB of file storage |
| Free plan | 2,000 AI credits and 20 AI searches a month, 500 MB of reference storage, extraction tables of up to 10 papers and 5 columns, and 10 Search API requests a month. | The app is free; syncing files uses 300 MB of free storage. Group libraries draw on the group owner's storage. |
| Free trial | None listed | None listed |
| Web | ||
| macOS | ||
| Windows | ||
| Linux | ||
| iOS | ||
| Android | ||
| Browser extension | ||
| Made by | Paperguide | Corporation for Digital Scholarship |
| Price read from | paperguide.ai | zotero.org |
| Checked | Oct 5, 2026 | Nov 12, 2026 |
Worth knowing
Paperguide
- The Free plan has no systematic reviews or shared workspaces and is limited to 20 AI searches and 2,000 AI credits a month.
- AI features draw on a monthly credit pool: 12,500 on Plus, 50,000 on Pro and 150,000 on Evidence.
- Dual-reviewer screening for systematic reviews needs the Evidence plan, at $89 per seat / month billed annually.
- Image and table extraction is marked as coming soon on the pricing page.
Zotero
- Only 300 MB of file storage is free; larger PDF collections need a paid storage plan.
- The pages read for this entry describe no built-in AI chat or summarizing feature.
- Paid plans buy storage only; every feature of the app is already in the free version.
Key features
Paperguide
- AI Search
- Ask a research question in plain language and get a synthesized answer drawn from more than 200 million papers, with each claim linked to its source.
- Systematic reviews
- Screens papers against a predefined protocol with cited evidence for each criterion, then produces verified extraction tables, a report and a PRISMA diagram. Dual-reviewer screening is on the Evidence plan.
- Reference manager
- Imports from Zotero or Mendeley, or by DOI, URL, PDF, BibTeX or RIS, fetches metadata and open-access PDFs, and formats citations in more than 1,000 styles.
- Extract Data
- You define the columns and the AI fills them across the selected papers, with every value linked to the statement it came from. Tables export to CSV or Excel.
- Research Agent
- Investigates a topic across the paper database and your library, answers questions about one or several PDFs, and can generate a literature review of up to 50 papers.
- AI Writer
- Drafts and edits documents with citations from your library and the paper database, and exports them as Word, PDF or LaTeX files.
Zotero
- Collect from the web
- Zotero senses articles, books and news stories on pages you browse and saves the full reference with one click.
- Collections, tags and saved searches
- Sort items into collections, tag them with keywords, or create saved searches that fill automatically as you add material.
- Citations in your editor
- Inserts references and bibliographies in Word, LibreOffice and Google Docs, with more than 9,000 citation styles.
- Optional sync
- Syncs your library and files across devices, and lets you open your research from any web browser.
- Shared libraries
- Share a library with as many people as you like at no cost, for co-writing or course materials.
- Open source
- The vendor describes Zotero as open source and run by a nonprofit with no financial interest in your data.
Plans
Paperguide
Free$0
2,000 AI credits and 20 AI searches a month, 500 MB of reference storage, and extraction tables of up to 10 papers and 5 columns.
Plus$12
per seat / month, billed annually ($144); $19 billed monthly
12,500 AI credits a month, systematic reviews of up to 1,000 papers, unlimited AI searches and reference storage, and shared workspaces.
Pro$29
per seat / month, billed annually ($348); $49 billed monthly
50,000 AI credits a month, systematic reviews of up to 5,000 papers and 500 Search API requests a month.
Evidence$89
per seat / month, billed annually ($1,068); $149 billed monthly
150,000 AI credits a month, PRISMA-grade dual-reviewer screening, a dedicated support channel and 1,500 Search API requests a month.
EnterpriseCustom
Custom AI credits, systematic reviews of up to 20,000 papers, dual-reviewer screening and a dedicated support channel.
Zotero
Free$0
The full app, with 300 MB of file storage for syncing PDFs, images and snapshots.
2 GB$20
per year ($1.67 per month)
2 GB of file storage.
6 GB$60
per year ($5 per month)
6 GB of file storage.
Unlimited$120
per year ($10 per month)
Unlimited file storage.
Ways to pay less
Paperguide
- Annual discount
Save up to 41% with yearly billing
Billed yearly, Plus is $12 a seat per month against $19 billed monthly, Pro is $29 against $49 and Evidence is $89 against $149. The pricing page labels the saving as 41%.
- Education
30% academic discount with a university email
Verifying a university email takes 30% off: Plus becomes $8, Pro $20 and Evidence $62 per seat / month billed yearly, or $13, $34 and $104 billed monthly.
Zotero
No public discounts listed.
Common questions
Which is cheaper, Paperguide or Zotero?
As of Nov 12, 2026, Paperguide starts at $12 per seat / month, billed annually ($8 with the academic discount), and Zotero starts at $20 per year for 2 GB of file storage. One is priced for each person and the other is not, so which costs less depends on how many of you use it.
Which has a free plan, Paperguide or Zotero?
As of Nov 12, 2026, both Paperguide and Zotero have a free plan.
Which platforms do Paperguide and Zotero run on?
As of Nov 12, 2026, only Paperguide lists a web app and a browser extension and only Zotero lists macOS, Windows, Linux, iOS and Android apps. A platform missing from a listing is one its maker's pages did not mention.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.