Sentence-level AI detection
Check how your writing reads
See which sentences read as AI, with a score for each one, before you submit.
- Email or Google
- Private by default
- A score for every sentence
- Failed runs are never charged
How we read your text
Sentence by sentence, not a single verdict
Every sentence gets its own AI score, so you can see exactly what drives the overall number and fix just those lines.
Sentence scoring
Each sentence is tinted by how AI-like it reads: the darker the amber, the higher the score.
Honest about limits
Detectors can be wrong. We show a guide, not a verdict.
How it works
Check, fix, check again
- 1
Paste your text
Drop in an essay, article or email of at least 40 words.
- 2
Scan for AI
Get an overall score and see which sentences drive it.
- 3
Fix what matters
Send the flagged text to the humanizer, then check again.
Good to know
Why detectors produce false positives
Formal writing looks uniform
Academic and technical prose is trained to be concise and even, which can resemble AI output.
Non-native writers are affected most
Rhythm, not proof
A detector measures how predictable the text is. Predictable is not the same as generated.
Scores are a guide
Scores differ between tools
Each detector uses its own model and threshold, so the same text can score differently.
Compare with care
FAQ
Questions, answered
What does the AI humanizer do?
It rewrites AI-assisted text so it reads naturally, while keeping your meaning. You choose the model and how strongly it rewrites.
Can an AI detector be wrong?
Yes. Every AI detector makes mistakes, including on text a person wrote. Use a score as a guide to review your writing, not as proof either way.
Is Online Humanizer affiliated with Turnitin?
No. Online Humanizer is an independent service and is not affiliated with Turnitin.
Do you keep my text?
Your runs are saved to your History so you can reopen them. You can delete one item or clear all of it at any time, and deleting your account removes everything.
How do I get a plan?
Plans are set up by our team for now. Contact us and we'll get you started. Online checkout is coming soon.
Which file types can I upload for a report?
PDF, Word (.doc and .docx), plain text, RTF and PowerPoint (.pptx), up to 20 MB.
Get started today
Flagged sentences?
Send them to the humanizer and rewrite just those lines. Create an account to keep every check in your History.
- Private by default
- Failed runs are never charged
- Start in seconds