iLang Detect and Crossplag AI Content Detector both try to spot AI written text. But they go about it in very different ways. iLang gives you a sentence level breakdown of six writing dimensions, plus explanations and fix suggestions. It's completely free, no signup required. Crossplag used to offer a free AI detector on its own site. But that site is now offline. Its detection model was folded into Inspera, a digital exam platform. What's the point of a detector that's no longer available?
iLang is built for writers who want to improve their text, not just see a number. Crossplag's original detector gave a single probability score. Independent tests showed it missed many AI texts and flagged human writing incorrectly. iLang's approach is more hands on. It flags specific issues and tells you how to fix them. That makes it useful for editing, not just checking.
Side by side
scroll sideways on small screens →| Feature | iLang Detect | Crossplag AI Content Detector |
|---|---|---|
| Pricing | Free | Historic freemium: detector free, plagiarism credits pay-as-you-go from $9.99; standalone site now offline |
| Free tier | Free to use, no signup | Historic: the AI detector itself was free (no credits); the plagiarism side gave 10 signup credits, about 1,000 words. The original site is now offline. |
| Output style | Sentence-level issue list across 6 dimensions (vocabulary, structure, tone, punctuation, logic, rhythm) plus an AI probability score | 0-100% AI Content Index probability score |
| Languages | English (Chinese version at detect.ilang.cn) | AI detection: English only (vendor said more were planned); the plagiarism side claimed 100+ languages. |
| 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 | No (no public API docs; integration goes through the Inspera platform) |
| Best for | Writers and editors who want to fix the text, not just get a score | Students, teachers and content writers doing light self-checks; after the acquisition, education institutions on Inspera |
| Vendor accuracy claim | No accuracy percentage claimed. iLang shows the markers themselves, so you can judge every flag instead of trusting a number. | None stated; the original pages are offline. Third-party reviews recall a roughly 98% detection claim, secondhand only. |
Where they differ
Pricing and availability
Crossplag's AI detector was free to use, but the standalone site is gone. It's now part of Inspera, which serves institutions. You can't just sign up and use it anymore. iLang is still free with no signup. You paste your text and get results immediately. No credits, no limits, no account needed. That's a clear advantage for anyone who doesn't want to hunt for a working tool.
What you get back
Crossplag gave you a single percentage score: how likely the text is AI generated. That's it. iLang shows you a list of issues per sentence across six categories like vocabulary, structure, and tone. Each issue comes with a plain English explanation and a fix suggestion. If you're trying to edit your work, iLang tells you what to change. Crossplag just told you to worry.
Accuracy and trust
Crossplag's original team claimed high accuracy, but independent tests found it missed most AI texts and had a high false positive rate. The product page is gone, so you can't verify claims. iLang doesn't just give a score. It shows you exactly which sentences look off and why. You can judge for yourself. That transparency builds trust. You don't have to take a black box number on faith.
Which one to pick
Students and faculty at universities using Inspera's exam platform
If your school uses Inspera, you might have access to Crossplag's detection integrated into the system. It can catch AI writing in exam settings. But for everyday editing and self checks, you're better off with a dedicated tool like iLang.
Writers and editors who want to fix their text, not just get a score
If you write content and need to ensure it reads naturally, iLang is the tool for you. It highlights specific problems and suggests better phrasing. No signup, no cost. You can paste text, get feedback, and improve your writing immediately. It's like having an editor that spots AI patterns.
If you have access to Crossplag through Inspera and want detailed editing feedback
If your institution uses Inspera, Crossplag's detection is built in. You can run your text there for a quick check. Then use iLang to get sentence level fixes. That way you get both a broad flag and specific edits. It's a good combo for serious writing.
Frequently asked questions
Crossplag was acquired by Inspera in July 2023. The standalone website is now offline. The AI detection capabilities were folded into Inspera's digital exam and academic integrity platform. It's no longer available as a public tool.
Yes. iLang is completely free with no signup required. You don't need to create an account or pay for credits. Just paste your text and get results. There's no rate limit either. It's designed to be accessible to everyone.
iLang provides far more detailed feedback. It shows you sentence level issues across six writing dimensions, each with an explanation and a fix suggestion. Crossplag only gave a single probability score. If you want to improve your writing, iLang is the clear winner.
No detector is perfect. Crossplag's independent tests showed it missed many AI texts and flagged human writing incorrectly. iLang is transparent about its findings; it shows you which sentences look suspicious and why. You can make your own judgment rather than relying on a black box percentage.
See the issues, not just the score
Paste the same draft you ran through Crossplag. Free, no signup, nothing stored.