Originality.ai
An AI content detector and plagiarism checker aimed at publishers, agencies, writers and educators.
Plan details last verified 2026-10-13 · free plan available · developer API available
What it does
Helps content teams and educators check whether text may be AI-generated or plagiarised before publishing or grading it.
Main features
- AI Checker with sentence highlights and shareable/PDF reports
- Plagiarism Checker and bulk scanning
- Fact and AI hallucination checker
- Readability and grammar/spelling checkers
- Chrome extension that scans in Google Docs and can replay the writing process
Best use cases
- Publishers and agencies screening freelance content before publishing
- Editors checking content quality, readability and facts in one pass
- Teachers reviewing assignments, including via Moodle and Google Classroom integrations
- Developers running scans at scale through the API
Getting started (beginner-friendly)
Try the free AI checker on originality.ai with a short passage (no account required for the basic tool), then create an account if you need plagiarism, fact-checking or team features.
Strengths
- Combines AI detection, plagiarism, fact-checking and readability tools in one product
- Team management, scan history and an API suit agencies and publishers
- The vendor openly advises that an AI score should be one signal among several, with a human in the loop
Limitations
- Detection results are probabilistic and can produce false positives; Originality.ai itself says a score shouldn't be used alone for academic integrity discipline, so it should never be the sole basis for academic or disciplinary decisions
- The free Basic tier is limited to AI detection with a small daily scan and word allowance
- Text entered into the free tool may be used for training unless you have an account and opt out
Pricing (verified summary)
Free plan + paid
A free Basic tier offers limited AI-detection scans per day without a subscription; paid Pro and Enterprise plans use monthly credits and add plagiarism and other checks, the Chrome extension, team features and (on Enterprise) API access, and one-time credit purchases are also available. The site says there is no free trial. Verify current plans on Originality.ai's pricing page.
Last checked Oct 13, 2026. Plan details change often — always confirm on the official site before purchasing.
Platforms
Check Originality.ai's privacy policy and data-use settings; the site states text submitted to the free tool may be used for training and account holders can opt out.