Originality.ai is a paid AI detection platform for web publishers and agencies. It offers multiple detection models, a plagiarism checker, fact checker, and team management features. The tool claims 99%+ accuracy on flagship AI models, but independent tests show lower real-world accuracy and higher false positive rates.
iLang Detect is completely free with no signup. Instead of a probability score, it provides sentence-level analysis across six dimensions, with explanations and fix suggestions for every flagged fragment. This makes it a practical tool for writers who want to improve their text, not just detect AI.
Side by side
scroll sideways on small screens →| Feature | iLang Detect | Originality.ai |
|---|---|---|
| Pricing | Free | Paid-only (limited free web checker); Pro from $12.95/mo annual ($155.40/yr) or $14.95 monthly, 2,000 credits/mo; pay-as-you-go credits available |
| Free tier | Free to use, no signup | Free on-site AI checker: 3 free scans/day, up to 2,000 words/scan, no account required (note: site states free-tool input may be used for training); full platform requires paid credits |
| Output style | Sentence-level issue list across 6 dimensions (vocabulary, structure, tone, punctuation, logic, rhythm) plus an AI probability score | AI probability score from a choice of models (Lite/Turbo/Academic/multilingual) |
| Languages | English (Chinese version at detect.ilang.cn) | 30 languages , "check if text is written by AI in 30 languages, with an overall accuracy of 97.8% for our multilingual model" (vendor claim, originality.ai/ai-checker) |
| Fix suggestions | Yes: every flagged fragment gets a problem explanation and a fix suggestion, plus overall rewrite advice | Not advertised; detection only |
| API | Not public yet | Enterprise-only (API access is listed as an Enterprise-plan feature on the pricing page) |
| Best for | Writers and editors who want to fix the text, not just get a score | Web publishers, writers/editors/marketers and agencies buying content; secondary: teachers/students and enterprise (Moodle, Google Classroom integrations) |
| Vendor accuracy claim | No accuracy percentage claimed. iLang shows the markers themselves, so you can judge every flag instead of trusting a number. | "99%+ accuracy on leading flagship AI models from OpenAI, Gemini, Claude, and DeepSeek" with claimed false positive rates of 0.5% (Lite 1.0.2), 1.5% (Turbo 3.0.2), <1% (Academic); also "Most Accurate AI Detector in third-party studies" , originality.ai and originality.ai |
Where they differ
Pricing and Accessibility
Originality.ai is a paid platform with a limited free checker: 3 scans per day, up to 2,000 words each. The site notes that input from the free tool may be used for training. The full platform requires credits, starting at $12.95 per month. iLang Detect is completely free with no signup and no rate limits. Why pay for detection when you can get free, actionable fixes with iLang?
Output and Feedback
Originality.ai gives you a probability score from one of several models. You can choose Lite, Turbo, Academic, or multilingual. The score tells you how likely the text is AI generated, but it does not explain why. iLang Detect goes further. It analyzes your text at the sentence level across six dimensions: vocabulary, structure, tone, punctuation, logic, and rhythm. Every flagged fragment gets a problem explanation and a fix suggestion. You also get overall rewrite advice. This is useful for writers who want to improve their writing.
Accuracy and Features
Originality.ai claims 99%+ accuracy on leading AI models and a false positive rate below 1.5% for most models. Independent tests have found lower accuracy, ranging from 76% to 97%, with false positive rates between 2% and 5.7%. The tool also offers a plagiarism checker, fact checker, and team management. iLang does not make percentage claims. Instead, it focuses on identifying specific issues in your writing and helping you fix them. For writers who want to understand and improve their text, this approach is more practical.
Which one to pick
Choose Originality.ai if you need a complete detection suite with plagiarism checking.
Web publishers, agencies, and teams will benefit from Originality.ai's multiple detection models, plagiarism checker, and team management features. The Chrome extension with Writing Replay can help demonstrate human authorship. If you need to check content at scale and verify originality, Originality.ai is a solid choice.
Choose iLang Detect if you want to fix your writing, not just get a score.
Writers and editors who want to improve their text will love iLang. It is free, requires no signup, and provides sentence-level explanations and fix suggestions. You get feedback on vocabulary, structure, tone, and more. It is a practical tool for anyone who wants to write better, not just avoid AI detection.
Use both tools if you want to detect AI and then fix the issues.
Start with Originality.ai to get an AI probability score and identify potential problem areas. Then use iLang Detect to get specific fix suggestions for each flagged sentence. This combination gives you both detection and improvement, making your writing stronger and more natural.
Frequently asked questions
Yes, iLang Detect is completely free to use. There is no signup required and no rate limits. You can scan as much text as you want without any cost. It works on English text, and a Chinese version is available at detect.ilang.cn. There are no hidden fees or credit requirements.
Originality.ai offers a limited free web checker. You get 3 free scans per day, each up to 2,000 words. No account is required. However, the site notes that input from the free tool may be used for training. For full access to all features, you need to purchase credits starting at $12.95 per month.
Originality.ai claims 99%+ accuracy on flagship AI models, with false positive rates under 1.5% for most models. Independent tests have found lower accuracy, ranging from 76% to 97%, and higher false positive rates. iLang does not claim an accuracy percentage. Instead, it identifies specific sentence-level issues and provides fix suggestions, which is a different approach to improving writing.
Originality.ai supports 30 languages for AI detection. According to their site, the multilingual model has an overall accuracy of 97.8%. iLang Detect currently works on English text. It also has a Chinese version available at detect.ilang.cn. Both tools are expanding their language support, but iLang is more limited in languages at this time.
See the issues, not just the score
Paste the same draft you ran through Originality.ai. Free, no signup, nothing stored.