Mendeley vs ReadCube Papers (2026): which should you pick?
As of Nov 13, 2026, ReadCube Papers grades higher than Mendeley: 2.4 against 2.2 out of 4.0.
Checked Nov 12, 2026 and Nov 13, 2026 · graded Nov 12, 2026 and Nov 13, 2026 by ToolGPA
Mendeley grades higher on the free plan. ReadCube Papers grades higher on value for money. They get the same grade on features, ease of use and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
Mendeley
Reference manager from Elsevier, with paid AI add-ons
ReadCube Papers
Reference library with an AI assistant for cited answers
Which one is for you
Pick Mendeley if
- Fits if you want a no-cost reference library and don't need AI
- Works for researchers already using Scopus or ScienceDirect
Look elsewhere if
- Pricey if you want its AI features, at $26 a month billed yearly
- Not for you if you're buying for a company, since Elsevier says the plans aren't for corporate use
- Watch out: Mendeley Premium is now part of LeapSpace, per the pricing page
- Watch out: AI in the free LeapSpace tier runs unlimited for 14 days, then limited and not inside Mendeley
Pick ReadCube Papers if
- Fits if you want a reference library with PDF chat, at about $8 a month
- Works for researchers who cite in Word or Google Docs
Look elsewhere if
- Skip it if you want a plan that stays free, as there is only a 30-day trial
- Tight if you share: Essentials allows 5 shared libraries and limits PDF chat per day
- Pricey if you need chat across a library, saved searches and full Dimensions search, which need Plus at $185 a year
- Watch out: the research assistant and systematic review add-on are Enterprise only, sold through sales
- Watch out: the pricing page lists mobile apps but names no desktop operating systems
How we grade them
| 2.2GPAMendeleyFair | 2.4GPAReadCube PapersFair | |
|---|---|---|
| Value for money | DThe AI features are on LeapSpace Individual at $26 a month billed yearly, more than twice the research middle of $10 and inside the dearest tenth, which starts at $20. The free LeapSpace tier excludes the AI inside Mendeley. | BEssentials is $95 a year, about $7.92 a month, which is the edge of the cheaper quarter of research tools ($7.92). Plus is $185 a year. |
| Free plan and trial | BThe reference manager is free with 2 GB of storage, and a person can live on it. The LeapSpace free tier has unlimited AI for only 14 days, then limits. | CA 30-day trial of Plus with no card, and no free plan after it. |
| Features | CA reference library, Ask My Library, a Reading Assistant, Compare Experiments and a Word add-in. The AI bits sit behind the paid plan, and desktop support couldn't be confirmed from the pages read. | CLibrary, annotation, citations, literature monitoring and an AI assistant. Library chat and saved searches need Plus, and the research assistant is Enterprise only. |
| Ease of use | CNo store rating on record. A reference manager means importing a library, setting up folders and a plug-in. | CNo store rating on record. It has a library to build and import, and citation tools to set up. |
| Platforms and integrations | BListed as web only, because desktop apps couldn't be confirmed. It has a Word add-in and connects to Scopus and ScienceDirect. | BWeb, iPhone, Android and a browser extension, with Word, Docs, EndNote, Zotero, Mendeley and Dimensions. No desktop OS is named. |
| Best for | managing a reference library for free | a reference library with an AI assistant |
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: Mendeley and ReadCube Papers. How we grade
Price against what you get
Mendeley starts at $26 a month and scores 2.3 out of 4 on features, ease of use and platforms. ReadCube Papers starts at $7.92 a month when paid by the year for each person and scores 2.3.
They score the same, and ReadCube Papers starts $18.08 a month lower. Of the other AI research tools on the chart, 26 score higher than Mendeley for less, and 10 score higher than ReadCube Papers 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
- ReadCube Papers also covers web clipper.
At a glance
| Mendeley | ReadCube Papers | |
|---|---|---|
| Pricing | Free plan | Free trial |
| Starts at | $26 per month, billed annually ($32 billed monthly) | $95 per user / year, billed annually ($10 billed monthly) |
| Free plan | Mendeley's reference manager is free, with 2 GB of storage. LeapSpace has a free tier whose AI features are unlimited for 14 days, then limited. | None |
| Free trial | None listed | 30-day free trial of Plus, no credit card required |
| Web | ||
| iOS | ||
| Android | ||
| Browser extension | ||
| Made by | Elsevier | Digital Science |
| Price read from | researcher.elsevier.com | about.readcube.com |
| Checked | Nov 12, 2026 | Nov 13, 2026 |
Worth knowing
Mendeley
- AI features inside Mendeley need a paid LeapSpace plan; the free LeapSpace tier excludes them.
- The pricing page says Mendeley Premium is now part of LeapSpace.
- Platform support for desktop apps could not be confirmed from the pages read, so only web is listed.
- Elsevier says the plans are not for corporate use.
ReadCube Papers
- Essentials allows only 5 shared libraries, and PDF chat is under daily limits.
- Chat across a library, saved searches and full Dimensions search need Plus or higher.
- The Research Assistant and the systematic review add-on are Enterprise only, sold through sales.
- The pricing page lists mobile apps but names no desktop operating systems.
Key features
Mendeley
- Reference library
- Add PDFs to a library, organize them with collections and tags, then read, highlight and annotate in one place.
- Ask My Library
- On the paid plan, search, summarize and compare PDFs across your saved library; this works in Mendeley Reference Manager.
- Reading Assistant
- Summarize or question a saved document, with suggested follow-up questions.
- Compare Experiments
- Pull goals, methods and results from several studies into a table that exports as CSV.
- LeapSpace search
- Searches Scopus-indexed literature and builds Deep Research reports, with Trust Cards that show supporting sources.
- Word add-in
- The Individual plan lists a Microsoft Word add-in for inserting citations.
ReadCube Papers
- Library and PDF annotation
- Store and organize PDFs with tags, custom fields and Smart Lists, and highlight, underline, draw and add notes on the PDF.
- SmartCite
- Insert citations into Word and Google Docs from more than 10,000 citation styles.
- AI Assistant
- Ask questions of one PDF, or of up to 20 papers at once on Plus, with answers linked to the source passage. Daily limits apply.
- Literature monitoring
- Save a recurring search so new papers are added to your library, with daily, weekly or monthly email alerts.
- Search and discovery
- Plus searches more than 150 million publications through the Dimensions database; Essentials searches metadata only.
- Systematic literature review
- Dual-reviewer screening, custom extraction forms and PRISMA flow diagrams are offered as an optional add-on for Enterprise.
Plans
Mendeley
LeapSpace Free$0
Search and other AI features free for 14 days, then with limits; does not include AI features in Mendeley.
LeapSpace Individual$26
per month, billed annually ($32 billed monthly)
Adds AI features in Mendeley and the Word add-in. Bills $320 yearly, $30 a month for 3-month terms.
LeapSpace OrganizationCustom
Institution-wide access, admin console and SSO; price on request.
ReadCube Papers
Essentials$95
per user / year, billed annually ($10 billed monthly)
Unlimited PDF storage, sync, SmartCite, 5 shared libraries and chat with a PDF under daily limits.
Plus$185
per user / year, billed annually ($20 billed monthly)
Adds groups of up to 10 users, saved searches, extended PDF chat and chat across up to 20 papers.
EnterpriseCustom
Everything in Plus with unlimited users, SSO, an admin dashboard and the Research Assistant; sold through sales.
Ways to pay less
Mendeley
- Annual discount
Save $64 with yearly billing
The LeapSpace page shows $320 billed every 12 months against $32 a month billed monthly, labeled as saving $64.
ReadCube Papers
- Education
Academics take 40% off
Academic discount applied at checkout on Essentials and Plus, verified with an academic email address or ID.
Common questions
Which is cheaper, Mendeley or ReadCube Papers?
As of Nov 13, 2026, Mendeley starts at $26 per month, billed annually ($32 billed monthly), and ReadCube Papers starts at $95 per user / year, billed annually ($10 billed monthly). 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, Mendeley or ReadCube Papers?
As of Nov 13, 2026, only Mendeley has a free plan. ReadCube Papers does not, though it has a free trial.
Which platforms do Mendeley and ReadCube Papers run on?
As of Nov 13, 2026, only ReadCube Papers lists iOS and Android apps and a browser extension. Both list a web app. 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.