GPTypo: AI Scanner for Writers

About

GPTypo is a false-positive shield for human writers. It scans the text you've written for the patterns AI detectors look for, then helps you fix them sentence by sentence.

Select text on any page and click the floating "Scan with GPTypo" button, use the right-click menu, or open the side panel directly. You'll get a detection score (0 to 100) and a sentence-level breakdown showing exactly which patterns triggered each flag: uniform sentence lengths, AI-tell phrases, overused transitions, overly formal phrasing, and more.

Click a flagged sentence for an AI-powered rewrite tuned to your tone. Replace inline on most editable surfaces (Gmail, LinkedIn, Substack, Reddit, plain web forms) or copy out.

Why GPTypo?
- The free tier runs a fast heuristic scanner, useful for short drafts up to 500 words at a time.
- Pro and Team plans unlock verified scoring from our independently-benchmarked detection model with a 98.2% accuracy across 672,000 test documents (see gptypo.com/transparency).
- Rewrites are signal-aware. A sentence flagged for uniform length gets a length-variance suggestion. A sentence flagged for an AI-tell phrase gets a phrasing rewrite.

GPTypo is built for human writers worried about false positives, not for bypassing detectors. We publish our methodology and accuracy data openly.

Privacy: text you scan is sent to GPTypo's API for scoring and is never sold. Full details at gptypo.com/privacy.