A false positive shield for human writers.

AI detectors flag human writing as AI more often than they should. GPTypo is built for the writers who keep getting caught. Scan your draft, see what trips detectors, fix it. If it still gets flagged, share a verified proof of your score.

01 · Workflow

Three things, in this order

The whole product is one short loop: scan, review, fix. If you ever need to defend the writing afterward, share a proof report.

Scan your writing

Paste your draft, scan a selection from any page, or use the Chrome extension to scan inline while you write. The scanner returns a score from 0 to 100, where 100 is fully human.

Free tier scores instantly using a 5-signal local heuristic. Pro tier verifies with a fine-tuned neural model.

See what trips detectors

Each sentence is scored individually. Flagged sentences come with reasons: missing human texture markers, uniform sentence lengths, generic phrasing, and other patterns detectors look for.

Reason chips show you why, not just what. Hover any reason for a plain-language explanation.

Fix it, in the words you'd actually use

Click a flagged sentence, get an AI rewrite suggestion that preserves your meaning while breaking the pattern. Replace it in place if you're scanning from Gmail or another writeable source. Copy if you're scanning a static page.

Suggestions are on-demand. Nothing rewrites until you ask.

02 · Where it works

Wherever you actually write

The Chrome extension works on the surfaces writers actually use. Replace works in writeable fields. Read-only pages get Copy.

Gmail

Scan + Replace

Substack

Scan + Replace

Notion

Scan + Replace

Scan + Copy

Anywhere else

Scan + Copy

03 · Free vs Pro

Try free, upgrade when accuracy matters

Both tiers use the same workflow. The differences are in the scoring engine, the word budget, and whether your scans can be shared as verified proof reports.

Feature

Free

Pro $14/mo

Scoring engine

Heuristic estimate

Neural verified

Words per month

5,000

100,000

AI rewrite suggestions

—

✓

Shareable proof reports

Estimate only

Verified

Chrome extension

Coming soon

04 · What GPTypo is not

Worth saying out loud

Not a humanizer

GPTypo does not try to disguise AI-generated writing as human. Tools that paraphrase AI output to evade detectors are a different category, and detectors actively train against them. GPTypo is for the inverse problem: writers whose human writing keeps getting flagged anyway.

Try the scanner free

5,000 words a month, no credit card. Upgrade only if verification or volume matters to you.

Open the scanner