Duey AI: It Fakes Your Google Docs Typing History

Duey AI is a browser extension that types text into Google Docs slowly, with fake typos and realistic corrections, so the document’s version history shows what looks like a genuine writing session. It also includes a humanizer that rewrites AI-generated text and an AI detector to check the result.

The company is direct about the purpose. Its homepage says Duey helps work you put into Google Docs, Slides and Word Online look like you wrote it, and describes the humanizer as bypassing Turnitin, GPTZero, Originality AI and Copyleaks. It also mentions that the detector runs the same checks your school likely uses.

What the Auto Typer Actually Does

Pasting text into a Google Doc takes a second and leaves one entry in version history. Duey takes considerably longer, on purpose.

The extension types character by character at a speed you set, anywhere from 15 to 150 words per minute. You can dial in an error rate, correction speed and break frequency. Above 90 WPM it automatically switches to quicker corrections and fewer pauses, because that is what fast typists actually do.

The correction behaviour is the detail worth understanding. Duey does not just insert typos, it fixes them the way people do. Backspace and retype when the mistake is caught immediately, select and retype when it is caught several words later. The company describes Pro sessions as indistinguishable from a real person at the keyboard, and the settings panel includes a Mistakes and Speed control so you can, in their words, dial in exactly how human it looks.

None of this makes writing faster. It makes the record of the writing look different.

Sessions and Auto Typer Are Two Products

Auto Typer runs in your browser. The tab has to stay open, though it keeps working when you switch away, and progress appears in the tab title with notifications at 25, 50, 75 and 100 percent.

Sessions runs on Duey’s own servers instead. You set a deadline, close the tab, and the text appears in the document over the period you specified. Google Docs only. The pitch is that you can schedule a document to write itself into existence over several days.

Pro adds Google Slides and Microsoft Word Online, plus formatted typing with bold, italics, lists and headings. Recent versions added a Document Lock to stop sessions being interrupted.

What It Costs

From Duey’s own pricing page, there are two paid tiers.

Basic auto typing in Google Docs is free with no account required. Free users get one Pro session, and Sessions includes a trial of up to 3,000 characters.

One inconsistency to note. A third-party comparison published in May 2026 lists Duey’s pricing as starting at $14.99 per month, which does not match the official page. Price from the checkout, not from a review.

The Detection Claim Is Weaker Than the Marketing

Duey markets the humanizer as producing text that bypasses every major AI detector. Independent numbers suggest that is optimistic.

A six-detector comparison run in May 2026 recorded Duey’s output at 44 percent on Turnitin and 28 percent on GPTZero. Those are not pass marks. The same test put a rival humanizer at 8 percent and 4 percent respectively.

That comparison was published by the competing tool, so read the ranking with that in mind. But the reviewer also credited Duey for the auto-typer workflow, which is not the behaviour of someone burying a rival, and the Turnitin figure is the sort of number a vendor has no incentive to invent. The same review noted an effective ceiling around 500 tokens, which matters for anything longer than a short essay.

So the humanizer half of the product does not reliably do what the homepage says it does.

Why Version History Became the Target

This is the context that explains why a tool like this exists at all.

AI text detectors have never been reliable enough to accuse anyone on their own, and most institutions know it. So schools and universities moved to a different check: Google Docs keeps a complete revision history, and draft playback lets a marker watch a document being written. A genuine essay shows hours of messy work. Sentences get rewritten, paragraphs move, research gets pasted in and cut. A pasted AI essay shows one enormous insertion at 11pm.

That check was harder to fake than a detector score, which is precisely why an entire product category grew up around faking it. Duey is not alone. The Chrome Web Store lists several competing auto typers, and the pattern is the same across all of them.

The arms race here is unusually one-sided in the short term and probably not in the long term. Version history is a signal, not the only one, and institutions are already looking at process evidence that is harder to synthesise.

What’s Actually at Stake

Worth being plain about this, because most coverage of these tools skips it entirely.

Academic misconduct is not graded on whether the detector fired. It is decided by a panel weighing everything available, and a fabricated revision history is worse than a paste, because it demonstrates intent. A student who pasted an essay made a bad decision. A student who paid for software to simulate writing it made a plan.

Penalties run from a zero on the assignment to suspension or expulsion, and misconduct findings sit on academic records where graduate schools and some employers will see them.

There is also a smaller practical point. Duey’s Sessions feature runs on the company’s servers, which means your document content passes through a third party. Read the privacy terms before uploading anything you would not want stored.

If You’re Teaching or Marking

Version history is still useful, but treat it as one input rather than proof.

Simulated sessions have tells. Typing speed that never varies with content difficulty, no research pauses, no structural revision, no paragraphs moved or deleted. Real writing is lumpy. It stalls on hard sections and races through easy ones, and people usually delete more than they keep.

Sessions scheduled over days will look more convincing than a single browser session, so consistency across an unnaturally regular schedule is itself a signal.

The more durable answer is assessment design. In-class components, oral defence of submitted work, and drafts submitted at checkpoints are all harder to fake than any digital artefact. For a broader view of what students are actually using, our roundup of AI tools for students covers the legitimate end of that market, and our look at Winston AI explains what detection software can and cannot establish.

Frequently Asked Questions

Is Duey AI free?

Basic auto typing into Google Docs is free with no account. Slides, Word Online, formatted typing, the humanizer and Sessions require a paid plan starting at $4 per month billed annually.

Does Duey AI beat Turnitin?

Not reliably. Independent testing in May 2026 recorded its humanized output at 44 percent on Turnitin, well short of the marketing claim.

Can teachers detect auto-typed documents?

Sometimes. Simulated typing lacks the structural revision, deletion and irregular pacing of real drafting. It also leaves the same third-party extension footprint across every document a student produces.

The Practical Call

Duey AI does what it says on the typing side. The extension is well built, the settings are granular, and the output convincingly resembles a writing session to anyone glancing at version history.

The humanizer is a different story, and it is the half that actually decides whether submitted work survives scrutiny. At 44 percent on Turnitin, you are paying for confidence rather than protection. If you are weighing this up as a student, the thing to understand is that a fabricated writing history is not a smaller version of the offence, it is a larger one, and the record follows you a lot longer than a bad grade would. If you write with AI text generators at all, using them openly where your institution permits it is both safer and, in most subjects now, entirely allowed.

Published: September 10, 2026