Free AI Detector
Paste in an essay, email, or article and get a read on whether it was likely written by a person or generated by AI.
Report
Free from the team behind Typeahead. The autocomplete for your whole Mac.
Get TypeaheadWhat is an AI detector?
An AI detector is a tool that analyzes writing for patterns common in AI-generated text, like uniform sentence length and predictable word choice, to estimate the likelihood a piece was written by a person or a model like ChatGPT. Schools, publishers, and employers increasingly run submissions through one before they're accepted. No detector, including this one, can guarantee a perfect result.
Why It Matters
More people are checking. False flags happen.
AI detectors are less reliable than most people assume. When Turnitin's detector launched, the company claimed a false-positive rate under 1%. According to reporting from Inside Higher Ed, Turnitin's own chief product officer later disclosed a sentence-level false-positive rate of roughly 4%, meaning legitimate, human-written work regularly gets flagged.
Source: Inside Higher Ed, “Turnitin's AI detector: higher-than-expected false positives” (2023)
Where it matters
Schools scanning coursework, publishers screening pitches, SEO editors reviewing content before it publishes, and recruiters skimming applications. Knowing what they'll see helps you catch a false flag before someone else does.
Analyzes sentence patterns, word choice, and structure to estimate whether text was likely written by a person or generated by AI, before someone else runs that check for you.
How It Works
Three steps, no learning curve.
Paste your text
Drop in an essay, article, email, or any piece of writing you want to check.
We analyze the patterns
Sentence variety, word choice, and structure get scored against known AI-writing signals.
Get a clear read
See a score and a plain-language explanation of what stood out.
A Different Way In
The best way to pass a check is to write it yourself.
A detector only exists because a chatbot wrote the whole thing for you. Typeahead completes your sentences instead of generating them, so what you submit is still genuinely yours, just written faster.
Typeahead completes your sentences, not your thoughts. It suggests the next few words as you type, in your own apps, in your own rhythm. You stay the author.
AI Detector
Common questions.
Yes. It's built as a free tool, no sign-up and no subscription, the same way we build everything else at Typeahead.
No AI detector, including this one, can guarantee 100% accuracy. AI models and detection methods both keep changing. Treat any score as a signal to investigate further, not a verdict.
It checks writing patterns common across AI models generally, not just one specific tool.
Same answer as everything we build: your text is used to generate your result, not sold, shared, or used to build a profile of you.
More Free Tools
The rest of the toolbox.
Want AI help while you write, not just after?
Typeahead completes your sentences in your own voice, right where you're already typing.
Mac only. One-time purchase. Runs offline.