Sentence-level scoring
Shows which specific sentences read as AI-written instead of just handing you one overall score with no explanation.
Free AI Content Detector
Check If Text Is AI-Written
Paste any text and get a score showing how likely it is to be AI-generated, with the specific sentences flagged — free, no sign-up wall.
Checks writing patterns
Looks at sentence rhythm, word choice, and structural patterns that are common in AI-generated text.
Fast results
Paste your text and get a score in seconds — no waiting, no uploads, no account required to try it.
Where people use it
- Checking AI-assisted drafts before submitting them
- Reviewing student writing for AI-generated sections
- Verifying content from freelancers or vendors
- Auditing your own AI-assisted writing before publishing
- Spot-checking blog posts and articles
How the AI detector works
Paste your text and get a score in seconds, with the specific sentences that read as AI-written flagged individually. Part of SuperPrompts' free toolbox alongside a Grammar Checker, Paraphraser, Summarizer, and AI Humanizer.
Try It FreeFrequently asked questions
Is SuperPrompts' AI detector free?
Yes. You can check text for free with no sign-up wall required to try it.
How accurate is AI detection?
No AI detector is 100% accurate — detection tools work by scoring statistical writing patterns, and both false positives and false negatives happen. Treat scores as a signal to investigate further, not a definitive verdict.
What does the detector actually check?
It looks at sentence rhythm, word choice, and structural patterns that are statistically more common in AI-generated text, and scores individual sentences rather than just the whole document.
Can I check just part of a document?
Yes. You can paste a full document or just a section you want to check.