Moonlight vs Paperguide (2026): which should you pick?
As of Nov 12, 2026, Paperguide grades higher than Moonlight: 2.6 against 2.2 out of 4.0.
Checked Oct 5, 2026 and Nov 12, 2026 · graded Oct 10, 2026 and Nov 12, 2026 by ToolGPA
Moonlight grades higher on ease of use. Paperguide grades higher on features and platforms. They get the same grade on value for money and the free plan.
Price, platforms and features side by side. The table says where each price was read and when.
Moonlight
AI reader for research papers with explanations and translation
Paperguide
AI research platform for literature and systematic reviews
Which one is for you
Pick Moonlight if
- Fits if you read a few papers a week and want explanations beside the text
- Works for readers who need a paper translated with its layout kept
Look elsewhere if
- Tight if you stay free: AI features on only 3 papers a week
- Pricey if you want Claude or Gemini Pro models, which means Premium at $49 a month
- Watch out: Team plans are priced by seat tier and the billing basis isn't shown
- Watch out: no desktop or mobile app, and no integrations are listed
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
How we grade them
| 2.2GPAMoonlightFair | 2.6GPAPaperguideGood | |
|---|---|---|
| Value for money | CPro is $10 a month billed yearly ($12 monthly), the category's middle. Premium, which adds Claude and Gemini Pro models, is $49. | 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. |
| Free plan and trial | CA free plan with unlimited document access and AI on 3 papers a week, on two base models. A reader doing more than 3 a week will hit it. | 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. |
| Features | CExplanations in context, layout-preserving translation, citations, chat and summary and a library. Several features are marked Limited on Free. | 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. |
| Ease of use | BNo store rating on record. Upload a paper and read, but features like deep search take some learning. | 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. |
| Platforms and integrations | CWeb and a Chrome extension. No desktop or mobile app was found, and no integrations are listed. | 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. |
| Best for | reading research papers with in-context explanations | search, references and reviews in one workspace |
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: Moonlight and Paperguide. How we grade
Price against what you get
Moonlight starts at $10 a month and scores 2.3 out of 4 on features, ease of use and platforms. Paperguide starts at $12 a month for each person and scores 3.0.
Paperguide scores higher, and starts $2 a month higher: the question is whether the extra is worth that to you. Of the other AI research tools on the chart, 10 score higher than Moonlight for less, and none scores higher than Paperguide 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
- Moonlight also covers highlights.
- Paperguide also covers AI search, AI agents and long-form writing.
At a glance
| Moonlight | Paperguide | |
|---|---|---|
| Pricing | Free plan | Free plan |
| Starts at | $10 per month, billed annually ($12 billed monthly) | $12 per seat / month, billed annually ($8 with the academic discount) |
| Free plan | Unlimited document access, with AI features limited to 3 papers a week. | 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. |
| Free trial | None listed | None listed |
| Web | ||
| Browser extension | ||
| Made by | Corca, Inc. | Paperguide |
| Price read from | themoonlight.io | paperguide.ai |
| Checked | Nov 12, 2026 | Oct 5, 2026 |
Worth knowing
Moonlight
- The Free plan limits AI features to 3 papers a week, and several features are marked Limited there.
- Which AI models you can use depends on the plan: Premium adds the most expensive ones, including Claude and Gemini Pro models.
- Team plans are priced per user in seat tiers (1-3, 4-15, 16-29), with 30 or more seats handled through a partnership; the Team billing basis is not shown.
- The homepage source links a Chrome Web Store listing; no desktop or mobile app was found on the pages read.
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.
Key features
Moonlight
- Explain in context
- Select any part of a paper to get an explanation of the passage, a figure, a table or an equation, without copying and pasting.
- Layout-preserving translation
- Translates a paper line by line, aligned with the original, and can translate whole pages.
- Smart citations
- Shows details of a cited reference in a preview so you can check it without leaving your place in the paper.
- Chat and summary
- Ask questions and discuss the paper, and get keywords and a summary of the key points.
- Library and deep search
- Organizes papers in a library and recommends related papers based on what the library holds.
- Markup and auto highlight
- Highlight, annotate and take notes, or let the tool underline key points automatically.
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.
Plans
Moonlight
Free$0
Unlimited document access with limited AI features on 3 papers a week and two base models.
Pro$10
per month, billed annually ($12 billed monthly)
Unlimited AI-assisted papers, 5 infographic explanations a week and selected advanced models. Marked with a 1-week free trial.
Premium$49
per month, billed annually ($59 billed monthly)
Everything in Pro with access to all models, including Claude and Gemini Pro models, and 30 infographic explanations a week.
EnterpriseCustom
For larger teams and organizations; contact the vendor. Team seat pricing is shown for 1 to 29 seats.
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.
Ways to pay less
Moonlight
- Annual discount
17% off with annual billing
The pricing page marks the Year option as saving 17-20%; Pro is $10 a month on annual billing against $12 monthly, and Premium $49 against $59.
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.
Common questions
Which is cheaper, Moonlight or Paperguide?
As of Nov 12, 2026, Moonlight starts at $10 per month, billed annually ($12 billed monthly), and Paperguide starts at $12 per seat / month, billed annually ($8 with the academic discount). 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, Moonlight or Paperguide?
As of Nov 12, 2026, both Moonlight and Paperguide have a free plan.
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.