Free
$0 forever
- AI detection for English and Chinese, up to 5,000 characters per check
- Batch checks of up to 10 files
- Downloadable PDF reports
- Check history in this browser
- Paper formatter, citation generator and writing tools
AIPaperFix Pro
More room for the writing you check
For students, teachers and writers who check a lot of text. The free detector stays free.
Pro
- Everything in Free
- Up to 20,000 characters per check
- Batch checks of up to 50 files
- History saved to your account (up to 500 checks)
- Shareable links to your reports
- Papers and references synced across devices
- Detection API — up to 60 requests a minute
- Higher rate limits for checks and file uploads
Pro is coming soon. Join the waitlist below and we’ll email you when it’s ready.
Join the waitlistQuestions
Is Pro more accurate than Free?
No. Pro uses the same detection model as Free. It gives you longer checks, more files at once and more places to keep your work. Every AI detection result is an estimate, not proof.
Can I cancel anytime?
Yes. Cancel from your account page. You keep Pro until the end of the period you already paid for, then your account goes back to Free.
What happens to my synced data if I cancel?
Your cloud history, synced papers, references and shared links stay in your account and come back if you subscribe again. Anything saved in your browser stays there. You can delete your account and its data at any time.
How are payments handled?
Payments are processed by Stripe. We never see or store your card number. You sign in with Google, so there is no new password to remember.
Do you offer refunds?
Subscriptions are not refunded for partial periods, except where the law requires it. If you were charged by mistake, email support@aipaperfix.com and we’ll sort it out.