AI Detector

Make AI text read
naturally for Content at Scale.

Content at Scale is an AI-content platform that also offers a free AI detector, popular with marketers and writers who want a quick read on how machine-like a draft looks. Here's how its scoring actually works, what its false-positive record looks like, and the honest version of what a humanizer can and can't do about it.

How Content at Scale works

The Content at Scale detector estimates the probability that a passage was written by a large language model such as ChatGPT, Claude, or Gemini, and presents a human-likeness percentage along with sentence-level highlighting. It reads statistical patterns — predictability of word choice and the variation in sentence complexity across a passage. Text that is highly predictable and uniform reads as machine-written, while human writing tends to be more uneven.

False positives

The score is an estimate, not proof, and AI detectors broadly misfire on real human writing. False positives cluster on formulaic, simple, or non-native and ESL English, whose low perplexity and steady cadence resemble AI output. A low human-likeness percentage is a signal to look closer, not a verdict — treat any single score that way.

Where we stand We measure every rewrite against Sapling's AI detector and show you the score, so you can see how natural the output reads. We do not claim to pass Content at Scale or any specific detector — their models change frequently and no humanizer, including ours, can guarantee passage at every moment. Anyone selling "100% undetectable guaranteed" is making a promise the technology can't keep. What Humanizer does is rewrite the rhythm, word choice, and structure that detectors key on, and let you match your own voice.

What a rewrite actually looks like

Here's the same paragraph before and after Humanizer — the structure, rhythm, and word choice change, not just a few swapped synonyms. The percentage is Sapling's AI-likelihood estimate, shown on every rewrite. It's a signal, not a guarantee against Content at Scale.

Before/after on a sample paragraph. Scores are Sapling estimates and will vary by text — Humanizer never promises a clean pass on any detector.
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Free tool runs Claude Haiku, one pass. Pro (app & web) uses the stronger model with a detector-guided retry loop, longer text, and unlimited rewrites.

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Try the rewriter right here, no signup. Get the native Mac & iPhone app for unlimited rewrites, longer text, and the stronger model.

FAQ

Content at Scale questions, answered.

Yes, Content at Scale offers a free AI detector on its site, typically with a per-check word limit. Like any detector, its human-likeness percentage is an estimate rather than proof.