Originality.ai offers tools for checking AI-generated text, plagiarism, facts, readability, grammar, spelling, and content quality. Its free Basic plan includes three AI scans each day, with a limit of 2,000 words per scan. The AI detector offers configurable AI allowances of 0%, 5%, 15%, 25%, or 40%. A website scanner can crawl a site, identify pages likely to contain AI-generated content, and schedule scans. The browser extension scans Google Docs, web pages, or selected text, and includes writing replay, typing behavior insights, and shareable reports. A REST-based API can submit text for AI and plagiarism scans and return detailed results; the maker says AI detection supports 30 languages. API AI scans require at least 50 words, and the help page says accuracy decreases below 100 words. The terms describe detection outputs as probabilistic estimates that may produce false positives or false negatives, not conclusive proof. Pro costs 12.95 USD per month billed yearly, with a monthly option at $14.95/month. The product is available through web, API, and extension.
Who it is for
Originality.ai suits website owners, content marketers, writers, and publishers who need text or site checks. Its extension and API also support scanning selected text or integrating scan requests into other workflows.
What is good
- Free plan includes three daily scans
- Website scanner can schedule site crawls
- API supports AI detection in 30 languages
- Extension scans Google Docs and selected text
What to know first
- API AI scans require at least 50 words
- Accuracy decreases below 100 words, according to help
- Detection may produce false positives or false negatives
- Pro credits expire monthly
Verdict
Originality.ai combines AI detection with plagiarism, fact, readability, and writing checks across web, extension, and API options. Treat detection results as estimates rather than conclusive evidence, and account for the monthly expiry of Pro credits.
Originality.ai plans and pricing
All plansCompared on content optimization software
- Free plan
- Yes
- Paid from
- $12.95/mo
- API access
- Yes
- Browser extension
- Yes
- Batch scanning
- Yes




