UndetectedGPT

Rewrite AI text so detectors read it as human writing.

Beginner API
Screenshot of UndetectedGPT, Rewrite AI text so detectors read it as human writing

What is UndetectedGPT?

UndetectedGPT is an AI detection remover tool that rewrites AI text so detectors read it as human writing. UndetectedGPT rewrites AI-generated text with its Ghost-2 model so detectors like GPTZero, Turnitin and Originality.ai score it as human.

UndetectedGPT is a text humanization platform built around Ghost-2, a proprietary model trained to rewrite AI-generated drafts so that they read like ordinary human prose. The workflow is intentionally narrow: paste text produced by ChatGPT, Claude, Gemini or another assistant, choose a tone (academic, balanced, conversational or formal), and let the model rebuild each sentence with the uneven rhythm, varied length and ordinary word choices that people actually use. The meaning, structure and citations are meant to survive the pass, so a technical report stays technical and an argument keeps its shape. The product exists because detectors such as GPTZero, Turnitin, Originality.ai, ZeroGPT and CopyLeaks score text on predictability. Even pacing, safe vocabulary and uniform sentence shapes form a statistical fingerprint, and that fingerprint is what gets flagged. UndetectedGPT attacks the fingerprint rather than swapping a few synonyms, and the company says Ghost-2 is benchmarked continuously against those detectors and retrained as they change, with a stated average pass rate above 96 percent. The same site bundles a multi-model detector that checks drafts against several engines at once with sentence-level highlighting, so writers can see which lines are exposed before submitting anywhere. The audience is students, copywriters, bloggers, marketers and freelancers who use AI to draft and need the result to clear institutional or client review. Beyond the humanizer, a document editor called Ghost Writer lets users draft, request citations and humanize paragraphs without leaving the page, and companion tools cover paraphrasing, rewriting, reference and citation generation, essay checking and a teacher-facing detector. An API and an MCP integration serve developers and agent workflows, and the engine handles more than 100 languages. The pitch rests on the vendor's own claims, and results depend on the detector, the language and how heavily the source was edited. Treat any pass rate as a starting point and verify against the specific checker your school or client uses.

How do you use UndetectedGPT?

  1. 1Paste or upload your AI draft
    Open the humanizer and drop in text written by ChatGPT, Claude, Gemini or any other assistant. You can paste directly or upload a file, and the source language is detected automatically.
    UndetectedGPT — Paste or upload your AI draft
  2. 2Pick a tone
    Select academic, balanced, conversational or formal depending on who will read the result. The tone shapes sentence rhythm and vocabulary without changing your argument or facts.
  3. 3Run the humanizer and compare versions
    Click once to let Ghost-2 rebuild the text, then generate more than one version and keep the one that sounds most like you.
  4. 4Check the output against detectors
    Run the rewritten text through the built-in detector to see per-engine scores and sentence-level flags before sending it anywhere.
    UndetectedGPT — Check the output against detectors
  5. 5Draft and humanize in Ghost Writer
    For longer work, write inside the document editor and request rewrites, citations or a humanized paragraph without leaving the page.
    UndetectedGPT — Draft and humanize in Ghost Writer
  6. 6Connect through the API or MCP
    Developers can wire the humanizer into their own tools through the API or the MCP integration, with documentation on the developer docs page.
    UndetectedGPT — Connect through the API or MCP

Pros and cons

Pros

  • Humanizer, detector, document editor and citation tools live in one account instead of six subscriptionsAI
  • Four tone presets (academic, balanced, conversational, formal) fit different audiences without manual rewritingAI
  • Bundled detector runs several engines at once and flags problems at sentence levelAI
  • Ghost-2 is retrained as detectors update, which matters in an arms-race categoryAI
  • API and MCP access give developers a programmatic route alongside the web interfaceAI

Cons

  • Stated 96 percent pass rate is the vendor's own benchmark and is not independently verifiedAI
  • Success depends on the specific detector, language and source text, so results vary by use caseAI
  • Continuous retraining implies detector updates can break output quality without warningAI
  • Ethical and academic-integrity questions are unavoidable: the tool is explicitly built to defeat institutional checksAI
  • Pricing tiers and usage limits are not described on the homepage, so costs need checking before committingAI

How much does UndetectedGPT cost?

Free trial

The site invites visitors to try the humanizer free, but the homepage does not state the length, word limit or terms of that free access.

Learn more

Support

A contact page is provided for support enquiries, and the site also links to developer docs and a blog for guidance.

Learn more

Integrations

An API and an MCP integration are listed for connecting the humanizer to external tools and agent workflows, with developer documentation on the site.

Learn more

Features

Ghost-2 humanizer with tone presets and multiple output versions, a multi-model AI detector with sentence-level analysis and PDF or Word upload, the Ghost Writer document editor with citations and rewrites, plus paraphrasing, rewriting, reference and citation generators, an essay checker and a teacher-focused detector. An API and MCP integration cover programmatic use, and the engine works across more than 100 languages.

Learn more

Frequently asked questions about UndetectedGPT

  • Does UndetectedGPT offer a free trial?
    The site invites visitors to try the humanizer free, but the homepage does not state the length, word limit or terms of that free access.
  • Does UndetectedGPT have an API?
    Yes, UndetectedGPT offers an API.
  • How do you use UndetectedGPT?
    The walkthrough on this page covers 6 steps: 1. Paste or upload your AI draft 2. Pick a tone 3. Run the humanizer and compare versions 4. Check the output against detectors 5. Draft and humanize in Ghost Writer 6. Connect through the API or MCP.
  • What platforms does UndetectedGPT support?
    UndetectedGPT is available on Web App.
  • What does UndetectedGPT integrate with?
    An API and an MCP integration are listed for connecting the humanizer to external tools and agent workflows, with developer documentation on the site.
  • What are the limitations of UndetectedGPT?
    Stated 96 percent pass rate is the vendor's own benchmark and is not independently verified. Success depends on the specific detector, language and source text, so results vary by use case. Continuous retraining implies detector updates can break output quality without warning.

Status

StatusActive
Views0
Outbound clicks0
Added10/21/2026

Platforms

Web App

Pricing

Freemium