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UndetectedGPT

Humanize AI text. Pass every detector. Guaranteed.

UndetectedGPT rewrites AI-generated text into natural human prose and proves it. Every output is automatically scored against GPTZero, Originality.ai, Turnitin, QuillBot, and more via live third-party APIs, so pass rates reflect independent benchmarks, not self-graded metrics. Powered by Ghost 1, a proprietary model trained end-to-end on the humanization task. Supports 100+ languages, multiple tone modes, and a developer API for teams building at scale.

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What does UndetectedGPT help with?

Why UndetectedGPT is different

Most humanizers use high sampling temperature or random word swaps to fool detectors. The output passes but reads like garbage. Ghost 1 is trained end-to-end on the humanization task, so rewrites are fluent and undetectable.

Independent benchmark pass rates

| Detector | Pass Rate | |---|---| | Grammarly | 99.8% | | QuillBot | 98.1% | | Turnitin | 97.0% | | Originality.ai | 95.4% | | ZeroGPT | 94.3% | | GPTZero | 92.5% |

Every rewrite is validated against these tools live via their APIs, not a self-scored internal metric.

Products

Humanizer — core AI-to-human rewriter, up to 1,000 words/request
Ghost Writer — AI-powered document editor (think Cursor, but for writing)
AI Detector — multi-detector scorer in one view
API — word-pack based, no subscription, words never expire

Who uses it

Students, bloggers, SEO teams, developers, and researchers who need AI-assisted content that holds up to editorial and academic review.