Free AI detector: see exactly what makes text sound AI
Paste at least 80 words and press Check for AI. You'll get an AI score from 0 (reads as human) to 100 (reads as AI-written), the exact phrases that pushed it up, a chart of your sentence lengths and your most repeated words. Most AI checkers stop at a number. This one shows you what to change.
Marked-up copy
Sentence rhythm
Each bar is one sentence, in order. Human writing usually looks jagged.
Top repeated words
Your 10 most repeated words, leaving out small words like "the", "and" and pronouns.
Like every AI detector, this one reads writing style, so its score is an estimate, not proof. No detector can tell with certainty who wrote a passage. Short texts, formal writing and writing by non-native English speakers get flagged more often than they should. Treat the score as a list of edits to consider, never as evidence against a person. Your text is checked on our server and is not stored. How to read detector scores.
What the AI detector looks at
The score combines six habits that show up again and again in AI-generated text. None of them proves anything alone. People use all of them sometimes. What gives text away is when several pile up at once.
| Signal | What it notices | Lesson that fixes it |
|---|---|---|
| AI-overused vocabulary | Words and phrases that research has found far more often in AI output than in human writing. | 2.3 Banned words |
| Sentence rhythm | Whether your sentence lengths vary the way a person's do, or sit at one steady length. | 3.2 Fix your rhythm |
| Formula transitions | Sentences opening with "Moreover" or "Ultimately", and "it's not just X, it's Y". | 3.1 The 10-minute edit |
| Specific details | Numbers, names, places and first-person experience. | 3.3 Specific details |
| Contractions | Whether you write "don't" and "it's" the way most people do. | 3.4 Read-aloud test |
| Dashes and lists of three | Em dashes and tidy "X, Y and Z" lists, two habits AI models overuse. | 1.4 The 12 tells |
What to do with your AI score
| Score | Reading | Next step |
|---|---|---|
| 0–37 | Reads as human | You're done here. Read it aloud once more for flow. |
| 38–61 | Mixed signals | Fix the highlighted phrases first, then the signal with the longest bar. |
| 62–100 | Reads as AI-written | Run the full five-pass edit, starting with specific details. |
Other detectors work differently and will give different numbers. Lesson 6.2 explains how to read detector scores, and lesson 1.3 covers how AI detectors work and where they fail. If a detector flagged writing you did yourself, start with what to do when you're falsely flagged.
Questions people ask about AI detectors
Is this AI checker free?
Yes. There's no sign-up and no limit on how many texts you check in a day, within normal use. Your text is analyzed on our server, the result comes back to your screen, and the text itself isn't stored.
Can it tell if something was written by ChatGPT?
It looks for habits that ChatGPT, Claude, Gemini and other chatbots share: overused words, even sentence lengths, stock transitions and a lack of specific detail. So it works as a ChatGPT detector, but it doesn't claim to know which tool wrote a text, and no AI text detector can say that for certain.
How accurate is it?
Treat any AI content detector as a second opinion. Clearly AI-written text usually scores high, and personal, specific writing usually scores low. The middle range is where every detector struggles, including the paid ones. Lesson 1.3 explains how AI detectors work and where they fail.
Why do other AI detectors give me a different score?
Each tool is trained differently and weighs different signals, so a 40-point gap between two tools on the same text is normal. Testing with several detectors gives you a fairer picture than any single number.
My own writing was flagged as AI. What now?
It happens, especially with formal writing and with writers using a second language. Start with what to do when you're falsely flagged, and keep your version history as proof of your process.
How do I lower my AI score?
Don't swap words at random or add typos. Add details only you know, vary your sentence length and cut the highlighted phrases. The 10-minute de-robot edit walks you through it, and checking your post length in the word counter helps if it's going on social media.