Free AI text checker
ChatGPT Detector: Free AI Text Checker
Was this written by ChatGPT? See which sentences read like AI output.
Paste an essay, article, or draft, then understand the result—and what to review if your own writing gets flagged.
- Free text check
- Highlights by sentence
- False-positive guidance
After a check, your text comes back here with its sentences highlighted as AI, mixed, or human.
AI detection is an estimate, not proof of authorship: human writing can be flagged, and AI writing can go undetected. Paste as many as 2,000 words per check, no account required.
Check a passage now
How to use the free ChatGPT detector
Start with the text you want to assess. Then use the result to decide what needs a closer look.
- 01
Paste an essay, article, or draft
Give the detector a full paragraph or more. A headline, a quote, or one stray sentence is too little to say anything about the rest of the piece.
- 02
Run the check
Select “Check My Text.” The checker reads the wording for habits typical of AI models; it has no access to anyone’s ChatGPT conversations.
- 03
Interpret before you act
Read the highlighted sentences alongside the original text. If authorship matters, consider sources, earlier drafts, revision history, and the writer’s account of the work.
“Did ChatGPT write this?”
How to read a ChatGPT detector score
A number needs a definition. How sure the detector is, how much of the passage it highlighted, and how much help AI actually gave are separate questions, and one score answers only one of them.
Example result
62/100
Does 62 mean 62% of this came from ChatGPT?
Not automatically. First check what the tool measures: a confidence score cannot simply be read as the percentage of words that came from ChatGPT.
A higher score is a signal to investigate
It reflects stronger signals under that detector’s method. It does not identify the writer, establish misconduct, or reliably name the model behind a passage.
A lower score does not confirm a human wrote it
AI-generated writing can slip through. A low result cannot promise that a document involved no AI assistance, or that another checker will agree.
Two tools, two answers
Each detector is trained and calibrated its own way, so a 40 from one and a 70 from another are not readings on one scale. Neither is an average of the two.
Accuracy & reliability
ChatGPT detector false positives: what to do next
“I wrote this myself. Why is it flagged?” That is a false positive: writing a person produced, scored as if a model had produced it. The useful next step is to examine the evidence behind the writing.
1. Keep the version that was flagged
Save the original text and the result before editing. Rewording again and again to lower a score can make it harder to show how your document developed.
2. Gather drafts, notes, and sources
Outlines, document history, research notes, and citations show your writing process. They supply context that a detection score cannot.
3. Ask for a review of the work itself
If a flag affects a grade or a publication, explain your process and ask which passages caused concern. Discuss the substance of the work next to the automated result.
Essays, teachers & submission concerns
ChatGPT essay checks: what students and teachers should know
Students want to understand their submission risk. Teachers want a fair way to review work. The questions are related, but they lead to different next steps.
For students: review your work, not just the score
A ChatGPT essay detector shows how one tool reads your draft. It cannot forecast your school’s decision. Keep your sources and revision history, and disclose AI assistance when your course asks for it.
Before submitting, check your argument, your citations, and your grasp of the material. A low AI score says nothing about originality or factual accuracy.
For teachers: use the result to guide questions
Look at the assignment, the passage, and the student’s explanation together. Ask how the argument developed or how a source supports a claim—a detector result alone cannot describe the student’s process.
Separate prohibited generation from editing or other help that your institution’s policy allows.
Will this give the same result as Turnitin?
Not necessarily. Turnitin and other institutional tools run their own models, settings, and score definitions, and this site has no access to them. Read a result here as a second opinion from a different tool; your school’s report may come out higher, lower, or about the same.
Which AI checker does my school use?
It varies from school to school, and sometimes from course to course. The syllabus, the academic-integrity policy, or the instructor can tell you which tool is used and how its results are weighed.
Does Canvas have a ChatGPT detector?
Canvas is a learning platform; whether an AI check runs on submissions depends on the services your school connects to it. Your course page or instructor can confirm what is in use.
Choosing a reliable AI checker
What to look for in the best ChatGPT detector
Pick a tool for your text and your decision—not simply the highest advertised accuracy number.
- Human-text false positives
- Ask how often genuine human writing was flagged, rather than looking only at how much AI text was caught.
- Relevant test samples
- Results on long English articles say little about short answers, translated text, or code.
- Clear score definitions
- A useful result explains what it measures and where it stops. An unexplained percentage invites misreading.
- Free allowance and privacy terms
- Check word limits, account requirements, and data handling before you paste a document—especially unpublished or sensitive work.
Understand the method
How does a ChatGPT detector work?
AI text detection assesses the writing you provide. It needs no access to your ChatGPT account, and it cannot reconstruct your prompts.
Writing patterns, not an authorship record
Many detectors use learned patterns to classify text as more consistent with human or AI writing, and some add statistical properties of the language. The exact features depend on the detector; a single phrase or punctuation mark is not proof of AI use.
Why length, language, and editing matter
A short passage gives a detector less to work with. Translation, editing, and subject matter all change the text being assessed, so check a tool’s documented coverage instead of assuming it performs equally on every kind of writing.
Copied text and AI text are separate problems
A plagiarism checker looks for overlap with existing sources; an AI detector assesses patterns in the writing. Original text can be AI-generated, and human-written text can contain copied passages. Neither check replaces verifying your sources.
Separate checks for separate questions
AI writing, text watermarks, and hidden characters
These terms often appear together in searches, but they describe different things. Choose the check that matches your question.
AI writing detection
Assesses patterns associated with generated text. It gives an estimate rather than verifying an official origin signal. This is what the checker above does.
Text watermark detection
Looks for a signal embedded during generation. This site does not offer an official ChatGPT watermark verification service.
Hidden-character inspection
Finds invisible or unusual Unicode characters. Finding or removing them does not establish who wrote a passage.
Frequently asked questions
Questions about ChatGPT detection
Free checks, false positives, school submissions, and the limits of AI detection.
What is a ChatGPT detector?
Software that reads a passage and estimates how closely its style matches text produced by ChatGPT and similar models. It works from the words alone; it has no record of who typed them.
Do I have to pay or sign up to use ChatGPTDetector.me?
Neither. Paste your text and run the check; there is no fee and no account. One run covers 2,000 words and stops there, so check a long paper in parts of 2,000 words or fewer.
Can an AI detector detect ChatGPT?
Partly. A detector picks up writing habits that ChatGPT and similar models tend to share, but some human prose has the same habits, so it cannot pin a passage on a specific model or a specific writer.
How accurate is a ChatGPT detector?
That depends on the detector and the material. Length, language, subject, and editing all affect results, and both false positives and missed AI content are possible.
What does a 62/100 detection score mean?
It means the detector found a moderate level of AI-associated signals under its own method. It is not a statement that 62% of the words came from ChatGPT; read the highlighted sentences before drawing a conclusion.
Why did a detector flag my human writing?
Your text may share patterns the detector associates with AI writing—formal, predictable, or heavily edited prose often does. The flag alone does not establish AI use. Drafts, notes, and revision history are stronger evidence of how you wrote it.
Does a short answer or discussion post get a reliable result?
Short pieces are the hardest to judge. A few sentences give a detector little to measure, so treat any score on a discussion post or short answer with extra caution and weigh it against the rest of the writer’s work.
Does it work with essays written in Google Docs or Word?
Yes. Select the text in your document, copy it, and paste it into the box above. Leave the file itself untouched; its version history is your record of how the essay was written.
If I run my text through a humanizer, will it stop being flagged?
There is no way to promise that. Each detector and each reviewer reacts in its own way, and disclosure rules still apply to the work no matter how it was reworded.
Is this only for written text?
Yes. It reads prose such as essays, articles, and emails. Source code and pictures need different methods, so a text score tells you nothing about them.
Is this GPTZero, ZeroGPT, or an OpenAI tool?
No. ChatGPTDetector.me is an independent site and is not affiliated with OpenAI, GPTZero, or ZeroGPT.
What happens to the text I paste?
Pasted text is processed so the detector can score it, and the copies made during processing are later removed or de-identified as our retention practices describe. It never becomes training data for our own AI models and is not used for advertising. Full detail is in the Privacy Policy.
Ready to review your writing?
Check your text. Understand the result.
Start with the free ChatGPT detector, then use the score explanation and false-positive guidance to decide what to review.
Check My Text