Crossplag
Combined plagiarism + AI-content detector with 100+ language support and a free-credit starter.
TL;DR
Crossplag's killer move is multilingual coverage — it's one of the few AI/plagiarism detectors that handles 100+ languages, which makes it useful for international schools and non-English programs. Reviews on accuracy are genuinely mixed; treat any AI-detection output as a flag-to-investigate, never as conclusive evidence of misconduct.
Recommend it if
You teach or administer in a multilingual environment, you need occasional checks rather than continuous monitoring, or you want pay-as-you-go pricing instead of an enterprise subscription.
Skip it if
You're an English-only US institution that already runs Turnitin, you need rock-solid AI-detection accuracy (no detector currently has this), or your district requires explicit FERPA documentation.
Quick facts
- Platforms
- Web
- Languages
- English+99 more (100+ supported)
- School fit
- 9-12 Higher Ed
- Subjects
- All subjects with written submissions
- Time to first output
- 2 min
- Learning curve
- Easy
- Setup
- Sign up, get 10 free credits, paste or upload first document
- Works offline
- —
Real-world use cases
How a teacher, student or parent actually puts this tool to work.
| Who | Scenario | Time | Output |
|---|---|---|---|
| Teachers | International Baccalaureate teacher checking 12 senior-essay submissions in English, Spanish and French — runs both plagiarism and AI detection in one workflow. | 30 min for 12 submissions | Per-essay plagiarism + AI flags |
| School leaders | Department head occasionally spot-checks suspect submissions across the term — uses pay-as-you-go credits to avoid an annual subscription for sporadic use. | 5 min/submission | Investigation-ready flag report |
| Teachers | ESL writing teacher checks for plagiarism across multilingual student submissions where Turnitin coverage is weaker. | 5 min/submission | Multilingual plagiarism check |
- Teachers
International Baccalaureate teacher checking 12 senior-essay submissions in English, Spanish and French — runs both plagiarism and AI detection in one workflow.
- Time
- 30 min for 12 submissions
- Output
- Per-essay plagiarism + AI flags
- School leaders
Department head occasionally spot-checks suspect submissions across the term — uses pay-as-you-go credits to avoid an annual subscription for sporadic use.
- Time
- 5 min/submission
- Output
- Investigation-ready flag report
- Teachers
ESL writing teacher checks for plagiarism across multilingual student submissions where Turnitin coverage is weaker.
- Time
- 5 min/submission
- Output
- Multilingual plagiarism check
Crossplag’s pitch: plagiarism and AI-content detection in one scan, plus multilingual coverage that most detectors don’t match. The free starter (10 credits on signup) lets you test on real submissions before committing.
Where it fits
- Multilingual schools and IB programs
- Sporadic-use scenarios where pay-as-you-go beats subscription
- Institutions wanting a complement to Turnitin for non-English coverage
What to be honest about
No AI detector currently on the market is reliable enough for academic-misconduct adjudication. Reviews on Crossplag’s accuracy split widely. Use any flag as a starting point for investigation — never as conclusive evidence.
What we like
- + One scan does both plagiarism and AI-text detection
- + 100+ language support — rare among AI-text detectors
- + 10 free credits on signup; pay-as-you-go option avoids subscription lock-in
- + Built-in privacy posture — site states documents aren't saved by default
Heads up
- − AI detection accuracy varies widely across third-party reviews (some report frequent false positives)
- − Limited public information on FERPA / SOC 2 — small-vendor compliance posture
- − No simultaneous URL/domain scanning capability
Pricing breakdown
Pricing
Verified directly on the vendor site. We re-check every quarter.
Free
- · 10 free credits at signup
- · Up to ~1,000 words of checks
- · Both plagiarism and AI detection
Pay as You Go
- · No subscription
- · Credits don't expire mid-term
- · Both detection types
Bundle
- · Bulk pricing for term-long use
- · Both detection types
Subscription
Most useful- · Continuous monthly access
- · Both detection types
Education / Institution
- · Custom volume pricing
- · Contact for details
Privacy & compliance
Privacy & compliance
What we found in the vendor's terms, DPA, and trust center. Verify with your district before deploying.
- FERPA
- Unclear
- SOC 2
- Unclear
- COPPA
- Unclear
- GDPR
- Compliant
- Trains on your data
- Unclear
- Data retention
- Site states documents are not saved by default after analysis.
- Hosting regions
- EU · US
Operated from Europe with GDPR-aligned defaults. FERPA / SOC 2 not specifically claimed; for US K-12 deployment requiring those, contact the vendor for current documentation.
Frequently asked questions
Frequently asked questions
How accurate is the AI detection?
Reviews vary — some praise it, others report meaningful false-positive rates, especially on non-native-English writing. Treat any AI flag as a signal to investigate, never as proof. This caveat applies to every AI detector currently on the market.
How is this different from Turnitin?
Turnitin is the institutional standard with deeper databases and integrations. Crossplag is lighter, multilingual, and pay-as-you-go. For institutions that already have Turnitin, Crossplag is mostly useful as a multilingual supplement.
Is the free tier enough to test?
Yes — 10 credits cover roughly 1,000 words, enough to scan 1-2 short essays before deciding whether to commit credits or subscribe.
Does the document content get retained?
Per the site's stated posture, documents are not saved by default after analysis. For sensitive student submissions, request the data processing agreement before institutional deployment.
What languages does it support?
Site claims 100+ languages for plagiarism detection. AI-text detection performs best on English; coverage on smaller languages is less proven.
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