Developer Tools
Turnitin AI Detector
Last updated 2026-06-30 · benchmark measured 2026-10-12 — deterministic & reproducible
A web tool that checks essays and academic drafts for AI-generated writing patterns.
Turnitin AI Detector at a glance
Turnitin AI Detector (T-Checker) is a web tool that lets students and educators paste essays or academic drafts to get an AI-generated writing probability score with sentence-level highlights.
Good for
- Checking an essay or application draft for AI-like writing before submission
- Reviewing research papers, literature reviews, or reports for generic phrasing and repeated structure
- Scanning discussion posts, reflections, or short assignments for AI-like patterns
Pricing
Free tier with limited checks, no signup. Basic $3.59/mo (1 credit), Pro $14.79/mo (5 credits), Ultra $22.79/mo (12 credits).
Questions people ask
Is Turnitin AI Detector free to use?
Yes, you can paste text and run an AI detection check for free, with no signup required.
What does the AI score mean?
The score shows how AI-like the writing patterns are: 0-30% is mostly human-like, 31-60% shows mixed signals, 61-80% shows high AI-like patterns, and 81-100% shows very strong AI-like signals.
Can it detect text from ChatGPT, Claude, or Gemini?
The tool checks for common AI-like writing signals across text from ChatGPT, Claude, Gemini, Perplexity, and other AI writing tools.
How accurate is the result?
The material states results should be used as a writing review reference and can vary depending on text length, writing style, and editing history.
What do the paid plans add?
Paid plans add plagiarism and AI report generation, bulk upload, and priority or 24/7 premium support depending on the tier.
Written by Legit.Show from turnitindetector.ai on 2026-10-04. It does not change the score.
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To cite this score: legit.show/s/turnitindetector-ai/2026-10-12. That address never changes; this page moves with every re-measure.
Legit.Show scored Turnitin AI Detector 75/100 on 2026-10-12, measured across all 7 frames from its public surface. legit.show/s/turnitindetector-ai/2026-10-12
Is Turnitin AI Detector production-ready?
Legit.Show scores Turnitin AI Detector 75 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on Turnitin AI Detector (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Reliability; its weakest is Security. Every frame it averages is published with its evidence on the Legit.Show listing.
The 7 Frames
- Performance — 66/100
- Accessibility — 93/100
- Security — 25/100How this compares across the catalogue: The Web Security Baseline
- Privacy — 75/100How this compares across the catalogue: The Privacy Gap
- Reliability — 100/100
- Standards — 92/100
- Discoverability — 75/100
What we measured
- No Content-Security-Policy and no HSTS.
- Served over HTTPS with a valid certificate.
- Real Lighthouse performance run — 231 ms to first byte.
- Returns a proper 404 for unknown routes.
- 3 of 3 sampled routes reachable.
- Has a reachable privacy policy.
- Sets cookies / loads scripts with no consent prompt.
- Discoverable: structured data, sitemap, canonical URL.
Who it's for
Students · Educators · Academic researchers · Essay writers · Academic institutions
Pricing
Free with limited checks; Basic $3.59/mo (1 credit/month), Pro $14.79/mo (5 credits/month), Ultra $22.79/mo (12 credits/month)
Sources and updates
- Description
- Taken from turnitindetector.ai's own website on 2026-06-30.
- Operator
- T-Checker, as named in turnitindetector.ai's terms, privacy page or footer.
- Benchmark
- Measured by Legit.Show from the live site, the way any visitor sees it — with no access to its code or accounts. Same method for every product, and no AI decides the score. Last checked 2026-10-12.
Put together from public information, without Turnitin AI Detector's involvement. If anything here is wrong, tell us and a person will check it.
Visit Turnitin AI Detector → · Alternatives to Turnitin AI Detector → · How this was measured →