Certaffy

Free tool · Live

Try detection before you create an account

Paste up to 2,000 words into the public tool for a score summary. Free account = 3 full highlighted reports, then 1 score-only scan/day up to 800 words.

How it works

1

Open the free tool

Use the homepage checker or go to /tools/ai-detector from Resources.

2

Paste up to 2,000 words

Get 3 score summaries/day with a locked report preview — no account required.

3

Create an account for full reports

Free account = 3 full highlighted reports, then 1 score-only scan/day up to 800 words. Pro adds PDF downloads and share links.

FAQ

Not for score summaries (3/day up to 2,000 words). Full unlocked analyses need a free or paid account — no credit card required for Free.

Try it on your own writing

Start free — 3 full highlighted reports, then 1 score-only scan/day up to 800 words. No credit card required.

Get startedAll features

Start free — no credit card required

Free account: 3 full highlighted reports, then 1 score-only scan/day up to 800 words. No account: 3 score summaries/day up to 2,000 words.

Create free accountView pricing