AI Text Detector & Humanizer
Paste any text to analyze it for common AI-generated writing patterns. The tool examines six key signals: sentence length uniformity, vocabulary diversity, burstiness (rhythm variation), AI-typical phrases, transition word density, and paragraph structure. Get actionable tips to make your writing sound more natural.
What This Tool Checks
Sentence Uniformity — AI tends to write sentences of similar length. Human writing varies dramatically. Vocabulary Diversity — measured by Type-Token Ratio. AI often reuses the same words more. AI Phrases — detects overused phrases like "delve into," "it's important to note," "in today's world." Transition Density — AI overuses connectors like "however," "furthermore," "moreover." Burstiness — human writing has rhythm — short punchy sentences mixed with long flowing ones. AI is smoother. Paragraph Structure — AI paragraphs tend to be similar in length.
See also: tools for editing rather than detecting — the AI Paraphraser rewrites passages at sentence level, and the AI Grammar Checker fixes the errors that mark a draft as raw AI output.
Common Use Cases
Editors at content sites running a sanity-check against AI-generated submissions from freelancers, where the policy isn't "ban AI" but "know what you're publishing." Educators looking for a starting signal on student work, with the understanding that detector scores are evidence and not proof. Marketing teams reviewing landing-page copy at scale to catch the bland generic-AI tone before it ships to production.
Self-checks by writers who use AI as a drafting partner and want to confirm the edited result reads as their own voice. SEO teams auditing existing site content to identify pages that read as AI-generated and may need a human rewrite for trust signals. Journalism workflows where AI-assisted drafts must be flagged before publication.
How We Compare
GPTZero, Originality.ai, and Copyleaks are the established paid detector services. They've invested in detection-model training and offer integrations with LMS platforms and CMSes. Their accuracy claims are subject to the same fundamental limit every detector hits: as generation models improve, detection becomes harder, and false positives on human-written technical or formal prose remain a real concern.
This tool runs a lightweight set of statistical heuristics (perplexity, burstiness, repetition patterns) entirely in your browser and surfaces them as evidence rather than a confident verdict. The intent is to support a human decision, not replace one. No text leaves your device, which is the right default for student work and unpublished drafts. Treat any single detector's output as one signal among many.
A reminder on detector limits: no tool can prove text was AI-generated. They can only report features that correlate with AI generation in current models. Use the score as a starting point for a conversation or a closer human read, not as a verdict that justifies an academic or employment consequence on its own.
Frequently Asked Questions
Built by Derek Giordano · Part of Ultimate Design Tools