Models
A mixture of models, cross-checked.
Every frontier model (Claude, GPT, Gemini, Mistral, Grok) alongside our own, routed per sub-task and made to check each other. No single-model bias.
Explore Science vs Paperpal
Paperpal edits your writing and screens a manuscript against submission rules. Explore Science scores whether the research holds up.
The short answer
Pick Explore Science when the open question is whether the science survives a reviewer: a Calibre score out of 100 across eight categories covering methodology, claims and evidence, with every reference resolved and tested against the claim it is attached to. Paperpal is the stronger writing tool and now runs its own reference and submission checks, but neither its AI Review nor its submission report puts a score on the research itself. If the draft is written and what you need is a verdict on the work, start with Explore Science. A single review is $49, no subscription.
Compared July 2026 · from Paperpal's own published materials
Choose Explore Science when
- Calibre scores methodology, claims and evidence out of 100 across eight categories; Paperpal's AI Review returns written feedback with no published score.
- References are resolved and flagged when they do not support the claim attached to them, inside the review that scores the argument rather than as a separate pre-submission pass.
- Several frontier models and scientific agents cross-check each review over up to 2 hours.
- Every revision is scored, so you can see what moved between drafts, in a workspace your co-authors can join.
- Rosa answers from the review's findings and your wider body of work, alongside specialised methods, editorial and novelty passes.
Choose Paperpal when
- Real-time language editing (grammar, tone, consistency) inside Word, Google Docs, Overleaf and Chrome; Explore Science does not edit prose.
- Its Reference Checker runs nine citation checks as a standalone pre-submission pass, without a full review attached.
- A built-in similarity check against 99B+ web pages and 200M open-access articles, sold to individuals with no institutional licence needed.
- Suggestions and similarity reports come back while you write, where an Explore Science review takes up to 2 hours.
- Translation and academic-register help across 50+ languages for authors writing in a second language.
Side by side
| Capability |  | Paperpal |
|---|---|---|
| What it does | Reviews the science: methodology, claims, evidence | Edits language, rewrites, and screens for submission |
| TurnaroundTime to a result | Up to 2 hours, run once on a finished draft rather than while you type | Real-time suggestions |
| Review engine | Named models: Claude, GPT, Gemini, Mistral and Grok, plus our in-house Explorer One, each pass cross-checked against the others | Not disclosed |
| Quality score | Calibre: a score out of 100 across eight categories | AI Review feedback plus 30+ submission checks across six areas; no published score |
| Reference checking | Every reference resolved, and flagged when it does not support the claim attached to it, as part of the scored review | Reference Checker: nine checks against 250M+ articles, covering retractions, dead DOIs, hallucinated references and citation relevance |
| Revisions | Each version scored; changes shown draft to draft | AI Footprint marks which text its AI changed; no draft-to-draft scoring in its published feature list |
| Paper-grounded chat | Rosa answers from the review's findings and your past papers, not only from the file you uploaded | Chat PDF: up to 10 documents in one conversation, answers cited to source text; not tied to a structured review |
| Plagiarism check | Available as a plug-in | Built-in similarity check; 7,000 words a month free, 10,000 on Prime |
| Pricing | Free to start; $49 for a single review with no subscription, or $99 a month (from $79 billed annually) with an allowance | Free tier with monthly caps; Prime from $12/mo billed annually ($25 monthly), Pro from $29/mo billed annually ($59 monthly) |
90% rate a review on par with or better than the human peer review they have had.
Two in three rate it better. From 304 head-to-head ratings by researchers who had received peer review on the same paper. These are our own users, self-reported, which is worth knowing when you weigh them.
Depth
Why a thorough review takes the time it takes.
Most tools optimize for speed. Explore Science runs the engine we built to conduct original research autonomously, and points it at your manuscript: it reads recent literature in your field, checks every reference, and works through the paper the way a careful reviewer does.
The time is the method, not an overhead on it.
How a paper is scoredTime spent thinking about your paper
How long a review actually takes
Single-pass LLM
~2 min
Other AI reviewers
5 to 20 min
Human peer review
(active reading time)
~30 min
Explore Science
up to 2 hrs
Industry observation; self-reported vendor figures; Publons peer-review time survey, 2018.
The engine
What actually reads your paper.
Three pieces of the architecture do the work behind every review.
Agents
Scientific agents that reason like the field.
Dozens of specialised agents work each review in parallel, each tuned to one dimension of analysis, spawning more when a section needs them.
Infrastructure
An in-house science stack.
Memory that holds your paper in context for the whole review, live verification of every citation, and novelty assessment. Built over years of autonomous science.
Why a submission-readiness pass stops short of a verdict
Paperpal's Manuscript Checker runs 30+ checks across six areas: language and grammar, references, structure and counts, figures and tables, disclosures, and metadata. Its AI Review adds written feedback on clarity, logical gaps, structure and completeness. Both target what an editor screens for before a paper reaches a reviewer, and neither publishes a score.
An Explore Science review starts where that screening ends. It reads the design, the analysis, and the evidence behind each claim, then scores the result out of 100 across eight Calibre categories, so an underpowered comparison or an inference the data will not carry arrives as a number you can argue with.
Both tools now check your references
Paperpal shipped a Reference Checker in June 2026: nine checks against a corpus of more than 250 million scholarly articles, covering retracted papers, dead URLs and invalid DOIs, AI-hallucinated entries, journal quality, self-citation, and whether a citation supports the statement it sits under. Run before submission, it will catch a fabricated reference.
Explore Science checks references inside the review itself, so an entry that does not support its claim is reported next to the claim it weakens and counts against the Calibre score for evidence.
Common questions
Can I use Explore Science inside Word or Overleaf?
No. Paperpal lives in your editor through add-ins for Word, Google Docs, Overleaf and Chrome, which is what makes real-time editing work. Explore Science takes a finished file and returns a scored review in its own workspace, where every co-author on the paper reads the same findings.
Does Paperpal tell me if my draft looks AI-written?
Yes. Paperpal's Document Health Check bundles an AI detector that sorts passages into three bands, alongside its plagiarism, grammar and reference checks, and AI Footprint marks in real time which text its own AI added or changed. Explore Science scores the research, not the authorship of the sentences.
How much of Paperpal works on the free tier?
Enough to try it: 200 language suggestions a month, five AI uses a day, unlimited citation generation, and 7,000 words a month of plagiarism checking, with a 300-word cap on selected-text Translate, Paraphrase, Trim and Academic Tone. Prime lifts those caps at $12 a month billed annually.
I only have one paper. Which should I buy?
Buy the review, not a subscription. Explore Science charges $49 for one full-depth review with no plan attached, which answers the question a monthly writing subscription cannot: a scored judgement on the methodology, claims and evidence of the paper you are about to submit.
Claims about Paperpal reflect its own published materials; everything about Explore Science reflects what the platform does today. Sources: Paperpal, Paperpal subscription pricing (help centre), Paperpal Reference Checker, Paperpal Reference Checker announcement (June 2026), Paperpal Document Health Check (May 2026), Paperpal Manuscript Checker, Paperpal Chat PDF, Paperpal AI Review announcement, Paperpal free plan limits (help centre), Paperpal product changelog. Something out of date? and we will fix it.
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