Free AI Detector
Is this AI written? Paste an essay, email, or article and get a read of likely AI, likely human, or unclear, with the signals behind it.
- Free to use
- No sign-up required
- Built by the Typeahead team
Report
Free from the team behind Typeahead. Autocomplete for the Mac apps you write in.
Get TypeaheadWhat is an AI detector?
An AI detector, sometimes called an AI writing checker, reads a piece of text for patterns that are common in machine-generated writing: uniform sentence length, stock transitions, hedged generic claims, and a lack of specific detail. From those it estimates whether a person or a model like ChatGPT most likely wrote it. Schools, publishers, and employers run submissions through one. No detector, this one included, can prove who wrote something.
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.
- What the AI Detector does
- Returns a verdict of likely AI-written, likely human-written, or mixed or unclear, with a low, medium, or high confidence level and the signals it saw in your text. It gives no percentage score.
Check a piece of writing in three steps.
Paste your text.
An essay section, article, email, or cover letter. Up to 1,500 characters per run, and at least 40 words for a fair read.
We analyze the patterns.
An AI model weighs sentence rhythm, stock transitions, and generic phrasing against human signs like uneven pacing and concrete detail.
Get a clear read.
See likely AI, likely human, or mixed, plus a confidence level and the specific phrases that stood out.
What the report looks like.
In today's fast-paced world, effective communication is more important than ever. It's important to note that clear writing not only enhances productivity but also fosters collaboration. Furthermore, by leveraging the right tools, teams can unlock their full potential. Ultimately, investing in communication is investing in success.
Verdict: reads as likely AI-written. Confidence: medium. Signals: a generic opener (“In today's fast-paced world”) with no concrete detail. Stacked stock transitions (“It's important to note”, “Furthermore”, “Ultimately”). Four sentences of near-identical length and shape. No detector is definitive - treat this as a signal, not proof.
An illustrative example. The real report puts each signal on its own line, and your result will vary with your text.
Was this written by AI? How to tell.
No single sign settles it, so look for several at once. AI drafts tend to keep sentences the same length, open with a broad statement, lean on transitions like “furthermore” and “it's important to note”, and stay vague where a person would name a place, a date, or a mistake they made. Human writing is usually lumpier: a short sentence after a long one, an odd word choice, a detail nobody would invent. The detector weighs those same signals and tells you which ones it found.
If your own writing gets flagged.
Careful, formal, or second-language writing can read like AI. A flag describes the text, not who wrote it.
Read the signals. The report names what it saw. Decide whether that is a machine pattern or simply how you write.
Keep your history. Version history in Google Docs or Word, outlines, and notes show how the piece took shape.
Add what only you know. Specific examples, names, and first-hand detail make writing clearer. Detectors also read them as human.
Ask how it was checked. If someone else flagged you, ask which tool they used and what it reported. Published false-positive rates are not zero.
Writing that sounds like you.
Typeahead is a Mac app that suggests the next few words in your own voice, so the sentences stay yours.
No tool makes text detector-proof. Typeahead doesn't try. It adapts to how you write and runs on your Mac.
Get TypeaheadCommon questions
Paste the writing into the box and press Check for AI Writing. You get a verdict (reads as likely AI-written, likely human-written, or mixed or unclear), a confidence level of low, medium, or high, and two to four bullets naming what in the text drove the call.
A detector can only tell you how the text reads. Careful, formal, or second-language writing can share traits with AI output, such as even sentence length and safe word choice. That is why the report lists its signals. You can judge whether they are evidence or just your style.
No. A figure like '87% AI' suggests a precision no detector has. You get a plain verdict, a confidence level, and the reasons, which is more useful when you need to explain or contest a result.
We don't claim an accuracy rate. It is an AI model making a judgment call, and it can be wrong in both directions. Short passages are the least reliable, and under about 40 words it will tell you there is too little to judge. Never treat one detector's verdict as proof.
Yes, a section at a time. Each run takes up to 1,500 characters, so paste the introduction, then a body paragraph, and compare the reads. If you are reviewing someone else's paper, use the result to start a conversation. Drafts and version history are better evidence than any detector.
It happens, and it does not mean you did anything wrong. Look at the signals the report names and check whether they describe a real habit, like long even sentences or stock transitions. Keep your drafts, notes, and version history. They are the strongest way to show the work is yours.
It looks for writing patterns that are common across AI models, not the fingerprint of one product, so it does not matter which assistant produced the text.
Yes, with no account and no card. There is a cap on runs per visitor per day so the tool stays affordable to operate. A typical check of a few passages fits well inside it.
It is not local. The text you paste is sent to our AI provider, Google Gemini, which writes the report, and the report returns to your browser. We don't store the text, sell it, or build a profile from it. The Typeahead Mac app is the on-device product: its model runs on your Mac, and Typeahead never sends your writing to a server.
Your voice, typed faster.
Typeahead finishes your sentences in your Mac apps, in words that follow how you already write.