AI Writing Analyzer

AI detectors analyze statistical patterns in text, including perplexity (how predictable word choices are), burstiness (variation in sentence length and structure), and vocabulary distribution. AI-generated text tends to be more uniform and predictable, while human writing shows more variation and unexpected word choices.

AI detectors estimate the probability that text was machine-generated, but they cannot determine this with certainty. No detector is 100% accurate — false positives (flagging human text as AI) and false negatives (missing AI text) are both common. Results should be treated as estimates, not definitive proof.

Light paraphrasing (swapping synonyms or reordering sentences) often still triggers detection because the underlying statistical patterns remain. Significant rewriting that adds personal voice, specific examples, varied sentence structure, and domain expertise is more effective at producing naturally human-sounding text.

Analysis runs entirely in your browser using local pattern-matching algorithms. Your text is never uploaded to any server, stored, or shared with third parties. Everything stays on your device.