Sentence AI Detector — Find Every AI Signal
Get an overall AI probability score plus a per-sentence breakdown with red, yellow, and green risk badges — so you know exactly which lines to rewrite before you publish or submit.
Free plan: basic detection · Sentence analysis on paid plans
Understand Your Risk at a Glance
High Risk
Almost certainly AI-written. Rewrite these sentences before submitting.
Medium Risk
Possibly AI-assisted. Consider rephrasing for extra safety.
Low Risk
Reads naturally. These sentences are likely fine.
How Sentence Analysis Works
Detect the whole text
Paste your content and we score the overall AI probability from 0–100%.
Split into sentences
We break the text into individual sentences and score each one.
Fix what's flagged
Copy any red or yellow sentence into our AI humanizer and re-test until you pass.
Sentence Detector FAQ
What makes the sentence detector different from a normal AI detector?
A document-level score tells you *if* text was AI-written, but not *where*. Sentence analysis pinpoints the exact high-risk lines so you only rewrite what matters.
How accurate is sentence-level detection?
We combine language-model probability signals with perplexity and burstiness heuristics. No detector is 100% accurate, so we recommend using it as a guide and re-testing after rewriting.
Can I use it free?
Yes. The free plan includes basic detection. Full sentence-by-sentence analysis is available on paid plans. See pricing.
Meet the AI Humanizer
Turn flagged AI sentences into natural, human-sounding text in seconds.
Humanize Now →