AI Essay Checker
Instantly check your essay for AI-generated content. Our AI essay checker analyzes your writing sentence by sentence and tells you whether it was written by a human or by AI tools like ChatGPT, GPT-4o, Claude, and Gemini – in under three seconds.
Check Your Essay for AI
Paste your essay below and get instant AI detection results — no sign-up required.
Text to Analyze
Limit: 1,000 words per check. Minimum: 50 words.
Why Use Our AI Essay Checker?
Undergrads of all levels, their tutors, and writers use our AI essay checker to verify that every other essay is written by a human. As for things that make the checker stand out, pay attention to the following:
Built for essays
We design our tool not for all existing papers but for academic writing only. By academic writing, we mean application essays, assignments, research papers, and personal statements. All pieces, where voice and authenticity 100% matter.
Sentence-level detection
Instead of a single score, we highlight the specific sentences most likely to be AI-generated, so you know exactly what to revise.
99.8% accuracy
Our regularly updated models provide highly accurate results for detecting content from the latest AI writing tools, tested on more than 10,000 samples.
Detects every major model
Detects content created by ChatGPT, GPT-4o, Claude, Gemini, and other AI models – and is regularly updated to recognize new tools as they become available.
Complete privacy
Your essay is analyzed over an encrypted connection and deleted immediately after detection. We never store or share your work.
Free to start
Run free checks with no credit card required.
How Our AI Essay Checker Works
Get accurate AI detection for your essay in three simple steps:
Paste your essay
Copy your essay into the AI essay checker. It works with college application essays, assignments, articles, and any text from 10 to 2,000+ words.
Run the analysis
Our models analyze writing patterns, words used here and there, the structure of every sentence, and the tone of prose to find out whether a text was an AI’s job.
Review your results
Receive a clear verdict with a probability score, confidence level, and sentence-level highlights – in under three seconds.
How AI Essay Detection Actually Works
Essays created by artificial intelligence tend to leave statistical fingerprints that human prose does not. Our checker detects several of these signals at the same time:
Predictability
AI models choose the most statistically likely next word, making their prose unusually smooth and predictable. Low, even predictability across an essay is a strong AI signal.
Burstiness (sentence variation)
People mix long, complex sentences with short, punchy ones. AI output is often uniform in length and rhythm, so we measure this variation across your essay.
Vocabulary patterns
AI writing leans on certain phrases and a narrower band of word choices. We analyze word variety, frequency, and complexity to spot AI-typical vocabulary.
Naturalness and voice
Authentic essays contain idiosyncratic phrases, specific details, and human imperfections. We score how natural and individual the writing sounds.
No detector is perfect. AI detection is an ongoing arms race, but combining multiple signals gives a far more reliable result than any single check.
What to Do If Your Essay Is Flagged as AI
If our AI essay checker flags parts of your essay, don't panic. Flags point to patterns, not proof. Here's how to make your writing read as authentically human:
- Add specific, real detail. Swap generic statements for concrete people, places, moments, and sensory details from your own experience.
- Vary your sentences. Break up uniform, medium-length sentences. Mix in short ones and let your natural rhythm show.
- Make your voice the basis for everything. Include colloquialisms, asides, and the way you usually phrase things in real life.
- Allow small imperfections. A little unevenness reads as human; flawless prose can read as machine-written.
- Always rewrite. Light edits to AI text often still trip detectors. Rewrite every flagged sentence so the final text is genuinely yours.
To save time, try our AI Humanizer to rewrite flagged sentences while keeping your meaning intact, then run the essay checker again to confirm.
Who Uses Our AI Essay Checker?
Students, educators, and writers use the checker to protect their authentic voice:
Students & applicants
Check academic pieces of all types before submitting them to make sure your unique voice is at the core of every paper.
Educators
Teachers in schools and tutors in colleges check whether student essays are human-written.
ESL writers
Non-native English writers confirm their polished drafts still read as their own work, not AI.
Researchers & writers
Academics and content creators ensure papers, articles, and publications meet human-authorship standards.
Frequently Asked Questions
Everything you need to know about our AI essay checker