Free tier available; Plus and Ultimate paid plans with credit system (1 credit per 100 words). One-time packages and monthly subscriptions available with money-back guarantee within 14 days.
Free: 100 credits at sign-up, topped up by 40 every week, 2 models per rewrite, 4 fast models including GPT-6 Luna, articles up to 6,000 words. Pro: $19 per month, 1,500 credits every month, up to 5 models per rewrite, all 9 models including Claude Sonnet 5.5 and Grok 4.7, articles up to 15,000 word
Key features
Paper analysis with scoring across multiple dimensions
Plagiarism detection and AI-written text identification
Citation style and consistency checking
Logical error and argumentation analysis
Grammar, spelling and inclusive language errors
Bibliography verification against trusted databases
Custom requirements upload for university-specific guidelines
Prioritized to-do list for revisions
Defense Studio with voice practice and recorded sessions
Page-by-page feedback with inline corrections
Mark passages and add notes about what's wrong
Flip through rewrites from multiple AI models at once
Choose from 9 AI models including GPT-6 Luna, Claude Sonnet, and Grok
Preserve undo history and original drafts
Support for TipTap-based editors and built-in document editor
No need for personal API keys
Credit-based pricing with transparent cost estimates
Handle articles up to 6,000 words on Free plan or 15,000 on Pro
Access 2 models on Free plan or up to 5 on Pro plan
What makes it different
Feedback typically delivered within 5 minutes using parallel processing
Comprehensive analysis across structure, logic, language, citations and plagiarism
Data protection with no training on user documents and user-controlled deletion
Money-back guarantee within 14 days if unsatisfied
Trusted by over 5000 students and universities globally
Never leave your editor—rewrites happen in-place without copy-paste
Only the passages you mark change; the rest of your draft stays exactly as written
Compare rewrites from multiple AI models side by side in one click
Free plan with 100 credits and weekly top-ups, no card required
Preserves full undo history even after accepting rewrites
PaperCheck
SwapDraft