AI Content Detector
Paste any text to analyze whether it was written by a human or generated by AI. 100% client-side — nothing leaves your browser.
Tips Based on Your Results
Voice-Typed Text Sounds Naturally Human
AI detectors can't flag what you speak from the heart. Steno turns your voice into text — naturally unique, every time.
Download Steno FreeFrequently Asked Questions
How does the AI content detector work?
This tool analyzes your text using six client-side linguistic heuristics: sentence length variance, vocabulary diversity (type-token ratio), burstiness (variance in sentence complexity), average word length consistency, repeated phrase detection, and transition word frequency. AI-generated text tends to have uniform sentence lengths, lower vocabulary diversity, consistent word lengths, and overuse of transition words like "however" and "furthermore." All analysis runs in your browser — no text is sent to any server.
Is this AI detector accurate?
This tool uses heuristic-based analysis to estimate the likelihood that text is AI-generated. It is not a replacement for professional AI detection tools and should be used as a general indicator rather than a definitive verdict. The accuracy depends on the length and type of text analyzed — longer passages (200+ words) produce more reliable results. Short snippets may not contain enough signal for meaningful analysis.
Can AI-generated text be made undetectable?
AI text can be made harder to detect through heavy editing, paraphrasing, and adding personal voice. However, the most natural way to produce undetectable text is to not use AI at all — or to use voice typing. When you speak your thoughts aloud, the resulting text captures your natural speech patterns, vocabulary choices, and sentence rhythm, which are inherently human and unique to you.
Does voice-typed text get flagged as AI?
No. Voice-typed text captures your natural speech patterns — the way you pause, the words you choose, and how you structure sentences spontaneously. This produces text with high burstiness, varied sentence lengths, and natural vocabulary diversity — all hallmarks of human writing. Tools like Steno transcribe your voice directly, so the output is authentically yours.
Understanding AI Content Detection
As AI writing tools become more prevalent, the ability to distinguish between human-written and AI-generated text is increasingly important. Whether you're an educator checking student work, a content manager reviewing submissions, or a writer who wants to ensure your text reads naturally, understanding what makes text "sound AI" can help you write better.
What Makes AI Writing Detectable?
AI-generated text follows predictable statistical patterns. Large language models optimize for coherence and fluency, which paradoxically makes their output more uniform than natural human writing. AI text tends to use medium-length sentences consistently, avoids very short or very long constructions, and over-relies on transitional phrases like "moreover," "furthermore," and "additionally." Human writers are more erratic — and that irregularity is what makes writing feel authentic.
The Six Signals This Tool Measures
- Sentence length variance — Human writers naturally mix short punchy sentences with longer complex ones. AI keeps things uniform.
- Vocabulary diversity — Measured by the type-token ratio (unique words vs total words). Higher diversity suggests human authorship.
- Burstiness — The variance in complexity from sentence to sentence. Humans are "bursty" — AI is smooth.
- Word length consistency — AI gravitates toward medium-length words. Humans use a wider range.
- Repeated phrases — AI often reuses 3+ word phrases. Human writers tend to vary their phrasing.
- Transition word frequency — Overuse of formal connectors is a strong AI signal.
Voice Typing: Naturally Human Text
One of the best ways to produce authentically human text is to speak it. Voice typing with tools like Steno captures your natural speech rhythm, vocabulary, and sentence structure. Unlike AI-generated text, voice-typed content inherits the speaker's unique patterns — pauses that become commas, tangents that add personality, and word choices that no model would predict. If you want to write faster without triggering AI detectors, voice typing is 3-4x faster than keyboard typing and produces text that is unmistakably yours.
For more writing tools, try our WPM calculator to measure your writing speed, or read about going from 40 WPM typing to 150 WPM speaking. You can also explore how Steno works under the hood to understand the technology behind natural voice-to-text.