AI Content Detector & Humanizer
A transparent heuristic estimate of how AI-written a text sounds — plus an optional, genuinely AI-powered humanizer rewrite that runs on seosorted's servers. No API key needed.
Optional: rewrite this text to sound more human (AI humanizer)
Runs on seosorted's AI to genuinely rewrite the text you pasted above — no API key needed. Sign in free to use it.
Why no AI content detector — free or paid — is fully reliable
AI content detectors, including the well-known paid ones, work by scoring statistical patterns that correlate loosely with machine-generated text: unusually uniform sentence lengths, low "burstiness" (the natural variation humans show between short and long sentences), and an overrepresentation of certain transition phrases language models favor. None of these signals are unique to AI text — a careful human writer can produce very uniform prose, and a lightly-edited AI draft can easily break the pattern. Independent testing has repeatedly found meaningful false-positive and false-negative rates across every detector on the market.
This tool doesn't pretend to be more accurate than that. It scores the same class of transparent, checkable signals and shows you exactly which ones triggered, so you can judge the result yourself rather than trust an opaque "94% AI" number with no explanation behind it.
Does it actually matter if content is AI-written?
Google has been explicit that it rewards helpful, high-quality content regardless of how it was produced, and has no blanket policy against AI-assisted writing. What tends to get penalized is low-quality, unedited, mass-produced content — which can come from a human or a model equally. The more useful question usually isn't "was this written by AI" but "is this actually good, accurate, and worth a reader's time."
How the humanizer is different from the detector
The detector above is a free, instant heuristic that runs entirely in your browser. The humanizer is a genuinely different kind of feature — it runs a real language model on seosorted's own AI infrastructure to actually rewrite the text with more natural sentence variation and less formulaic phrasing. It isn't a fake find-and-replace; it's a real model doing real rewriting, which is why it runs server-side and asks for a free sign-in.
Frequently asked questions
How accurate are free AI content detectors?
No AI detector, free or paid, is fully reliable — they work from statistical patterns like sentence-length uniformity and overused transition phrases, which produce both false positives on genuine human writing and false negatives on edited AI text. Treat any detector's output as a signal to investigate, not a verdict.
Why does this tool use a heuristic instead of a trained AI model?
A genuinely trained detection model requires significant infrastructure and still isn't reliably accurate in independent testing. Rather than claim false precision, this tool scores transparent, checkable signals — sentence length uniformity and common AI phrase patterns — so you can see exactly why a score came out the way it did.
Does Google penalize AI-generated content?
Google has stated it rewards helpful, high-quality content regardless of how it was produced, and doesn't have a blanket policy against AI writing. Low-quality, unedited, mass-produced content is what tends to get penalized — the production method matters less than the actual quality and usefulness of the result.
Does the humanizer feature use a real AI model?
Yes — it runs a real language model on seosorted's own AI infrastructure to genuinely rewrite the text, rather than applying a canned find-and-replace. No API key needed; just sign in free, with a daily allowance to cover the compute.
Start building your content library in under 8 minutes.
Your competitors are publishing every week. Every week you don't is a week of organic traffic going to them.
No Credit Card Required.