For educators
A Turnitin alternative for individual educators
Benchmark-tested AI detection with sentence-level highlighting and shareable reports. No institutional contract, free to start.
95.2%
accuracy, April 2026 benchmark
3.1%
false positives, same benchmark
$9.99
per month on Pro, free to start
0
contracts required
Try it right now — no account needed
Paste any student submission below to see the sentence-level report.
Paste or upload your text
Detection details
- PerplexityHow predictable each word is
- BurstinessVariation in sentence length
- N-gram patternsRepeated phrase signatures
- Stylometric fingerprintAuthor-level writing traits
aidetectors.io vs Turnitin: Side-by-side comparison
See exactly how we stack up against Turnitin for AI content detection
| Feature | aidetectors.io | Turnitin |
|---|---|---|
| AI Detection Accuracy (our April 2026 benchmark, 500 texts) | 95.2% | 83.8% |
| False Positive Rate (same benchmark) | 3.1% | 12.1% |
| Free Tier Available | Yes — 3 credits at signup + 1 per day | No |
| Individual Access | Yes — anyone can sign up | Institutional only |
| Starting Price | $9.99/month (prices checked September 2026) | Institutional licence, quoted per institution |
| Long-Term Contracts | No — cancel anytime | Annual institutional contracts |
| Sentence-level output | Every sentence scored and highlighted | Highlighted passages in the AI writing report |
| Supported AI Models | ChatGPT, Claude, Gemini, LLaMA, Mistral | Strongest on GPT-4o text in our benchmark (89.4%), weakest on Gemini (78.8%) |
| Sentence-Level Highlighting | Yes | Yes |
| LMS Integration | None — paste or upload; Chrome extension and Word plugin | Deep LMS integrations |
| Plagiarism Detection | No — AI detection, citation checker and writing tools | Yes — core feature |
| Shareable report | Yes — link for every scan | Report inside the LMS |
Why individual educators use aidetectors.io
No institutional contract
Turnitin is licensed to institutions on annual contracts. Our Pro plan is $9.99/month (or annual) with unlimited daily credits, and you can cancel any time.
Fewer false accusations
In our April 2026 benchmark (500 texts), Turnitin AI flagged 12.1% of human-written texts and our engine flagged 3.1%. No detector is immune to false positives, so a flag should start a conversation, not end one.
No institutional gatekeeping
Turnitin requires institutional licensing. Individual educators, tutors, and freelance instructors can sign up for aidetectors.io directly in seconds.
Results in seconds
Paste text or upload a DOCX or PDF and get a sentence-level report in seconds, without waiting for an LMS submission cycle.
Shareable reports
Every scan produces a report link you can keep with your notes or share with a colleague or department head.
Always up to date
Our detection models are updated continuously to catch the latest AI models including GPT-4o, Claude 3.5, and Gemini Pro. No waiting for annual updates.
Stop falsely accusing ESL students
Turnitin's AI detector has been widely criticized for disproportionately flagging non-native English writers. Multiple studies show false positive rates of 20%+ for ESL students — meaning 1 in 5 legitimate submissions gets wrongly flagged as AI-generated.
Our detection engine is specifically calibrated for diverse writing styles and ESL patterns, maintaining a false positive rate under 5% across all demographics. No student should face academic misconduct allegations because of a flawed detector.
False Positive Rates by Demographic
Based on internal benchmarks, April 2026
Frequently Asked Questions
Is aidetectors.io a good replacement for Turnitin?
For AI content detection specifically, aidetectors.io scored 95.2% accuracy with 3.1% false positives in our April 2026 benchmark (500 texts) versus 83.8% and 12.1% for Turnitin AI — our own benchmark, so weigh it accordingly — and it is available to individuals without a contract. Note that Turnitin also offers plagiarism detection, which is a separate feature — if you need both, you may want to pair aidetectors.io with a dedicated plagiarism checker.
Can individual teachers use aidetectors.io without institutional approval?
Absolutely. Unlike Turnitin, which requires institutional licensing, any educator can create a free account and start scanning student work immediately. Our free tier includes 3 free credits at signup plus 1 more every day, and Pro plans are available for individuals starting at $9.99/month.
Does aidetectors.io have fewer false positives than Turnitin?
In our April 2026 benchmark (500 texts), Turnitin AI flagged 12.1% of human-written texts and aidetectors.io flagged 3.1%. Turnitin itself reports a document-level false positive rate under 1% for documents with more than 20% AI writing, measured on its own corpus, so the two figures are not directly comparable. Detectors in general flag non-native English writers more often, so use the sentence-level view before drawing conclusions.
Can I use aidetectors.io with my LMS (Canvas, Blackboard, Moodle)?
Not directly — there are no Canvas, Blackboard or Moodle integrations today. Download or copy the submission from your LMS and paste or upload it, or use the Chrome extension or Word plugin to check text where you already read it.
Does aidetectors.io detect plagiarism too?
No. aidetectors.io does AI content detection, citation checking and writing tools; it does not run a web-plagiarism index. For plagiarism detection, pair it with a dedicated plagiarism checker.
Why do schools still use Turnitin if aidetectors.io is better for AI detection?
Turnitin has deep institutional relationships, built-in LMS integrations and plagiarism checking, which make it the default choice for many schools. Individual educators who want a second opinion on AI detection, a sentence-level map and a shareable report can use aidetectors.io alongside it for AI-specific detection.
Ready to switch from Turnitin?
Join thousands of educators who get more accurate AI detection at a fraction of the cost. No contracts, no institutional approval needed.