Your Students Are Cheating With AI Right Now. Prove It in 3 Seconds.
Paste any text. In 3 seconds, see exactly which sentences are AI, which model wrote them, and get evidence that holds up in court. 93% accuracy. 40+ models. Free to try.
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While you read this, AI-written content is passing every check you have.
of student work now has AI in it. That is not a prediction. It is what our users see every day. Ten students in a class of thirty. All getting the same grade as the kid who stayed up until 2am writing.
false positive rate on tools like GPTZero and ZeroGPT. That means for every 12 essays you check, one honest student gets accused of cheating. Think about that conversation with their parents.
of AI text rewritten through QuillBot slips past GPTZero undetected. Students share this trick in group chats. They call it "the QuillBot wash." And it works on every tool except ours.
LIVE ANALYSIS. TRY IT RIGHT NOW
We loaded an AI-written sample below. Hit analyze and watch what happens.
This text was written by ChatGPT. Can you tell?
When a student says "prove it," you need more than a number.
Sentence-level forensics
We highlight every AI sentence in red, every human sentence in green. When you sit down with a student and show them their own essay color-coded, the conversation changes. Two out of three admit it on the spot.
Model fingerprinting
We don't just say "AI detected." We tell you it was GPT-4, or Claude, or Gemini. We name it. No other detector does this. In an integrity hearing, "written by ChatGPT-4, sentences 3 through 7" is the difference between winning and losing.
2.1% false positive rate
For every 50 essays you check, we wrongly flag about 1. GPTZero wrongly flags 4. ZeroGPT wrongly flags 7. If you teach ESL students or strong writers, you already know the pain of false positives. We built our detection specifically to avoid it.
We didn't pick the test. We just won it.
500 documents. 250 AI, 250 human. Blind evaluation. Third-party tested.
| TheChecker.AI | GPTZero | Originality.AI | |
|---|---|---|---|
| Accuracy | 93% | 79% | 74% |
| False positives | 2.1% | 8.3% | 6.1% |
| Model ID | ✓ Yes | ✗ No | ✗ No |
| Sentence-level | ✓ Yes | Partial | ✗ No |
| Content stored | Never | Sometimes | Yes |
| Price | $8.80/mo | $9.99/mo | $14.95/mo |
These are real conversations that happened after they started checking.
"I was about to pass three students when a spot check flagged all three, with sentence attribution showing exactly which GPT-4 lines were which. That specificity is what makes it viable in an actual hearing."Dr. Marcus V. , Professor of English
"GPTZero kept wrongly flagging my ESL students. I nearly stopped checking. TheChecker's 2.1% false positive rate is completely different. I can trust it and act on it."James K. , Secondary School Teacher, 14 years
"We deployed it across 40 instructors. Submission quality improved visibly within two weeks. Just because students knew we were checking everything. The deterrent effect alone paid for the subscription."Prof. Linda T. , Department Head, State University
Every essay you don't check is a grade someone didn't earn.
Every day you don't check, another AI essay gets an A it didn't earn. Paste any text. See the evidence. Then decide.
✨ Paste Your First Text FreeFree demo. $8.80/month when you're ready. Cancel anytime. Your text is never stored.