DetectMy
Free AI detector with sentence-level explanationsSee which lines look AI-written, and why
Highlights
What you can do with it
- Check a paper for AI-generated sentences before submitting
- Review student writing during grading
- Verify article content before publication
How to use it
- 1 Paste your text or upload a file, up to 12,000 characters per scan
- 2 Let the model analyse structure, vocabulary and style
- 3 Read the sentence-by-sentence classification and explanations
- 4 Use the overall score and highlights to decide what to revise
Who it is for
Pros
- Free to use with no registration required
- Sentence-level detail instead of a single verdict
- Confidence scores show how strong each call is
- Accepts pasted text and common file formats
Limitations
- Results are probability-based and should not be treated as proof
- Each scan is limited to 12,000 characters
- Academic decisions must follow your institution's rules, and consequences of misuse rest with you
- Detection models can be wrong, especially on AI-revised text
What DetectMy is
DetectMy is a free online AI detector for checking whether text was written by a person, generated by AI, or revised with AI help. You paste text or upload files in formats such as txt, docx and pdf, up to 12,000 characters per scan, and no account registration is required. Rather than returning a single verdict, the tool works at sentence level: it analyses sentence structure, vocabulary choice and style consistency, labels each sentence, and explains the classification. An overall AI probability score with colour-coded highlights and per-sentence confidence scores rounds out the report, so you can see where the tool is sure and where it is guessing.
What you can do with it
- Paste text or upload a document for analysis
- See which sentences look human, AI-generated or AI-revised
- Read the explanation behind each label
- Use the overall score and highlights to prioritise revisions
- Check work before submitting or publishing
Who it is for
- Students and scholars verifying their own drafts
- Educators and institutions reviewing submissions
- Publishers, editors and content teams protecting credibility
- Anyone who needs a second opinion on suspicious text
What to watch out for
The output is probabilistic, not proof, so treat it as one input into a decision rather than a verdict, especially on AI-revised text where confidence drops. Each scan is capped at 12,000 characters, so long documents need splitting. If you use results in an academic or workplace setting, follow your institution's rules, and remember that acting on a detector alone can be unfair to the person whose work it is, with consequences resting on whoever makes the call. Detection models also change over time, so a score is a snapshot, not a permanent label.
FAQ
Is DetectMy free?
Yes, it is a free online tool and no account registration is required.
How much text can I check at once?
Up to 12,000 characters per scan, either pasted or uploaded as a file.
What does it output?
Sentence-level labels of human, AI-generated or AI-revised, an overall AI probability score, highlights and confidence scores.
Can I rely on it as final proof?
No. It is a reference tool. Detection is probabilistic, and academic or platform decisions should follow the relevant rules.
Why it is free
What the official page says： free of charge
Free limits, trial length and features are decided by the official site and can change at any time.
Product preview
Screenshot archived from the listing page, for preview only.
