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HumanizerPRO

HumanizerPRO is a free AI humanizer and AI-to-human text converter. It rewrites AI-generated text (from ChatGPT, Claude, Gemini, and other LLMs) into natural, human-sounding writing that aims to read past AI detectors such as GPTZero, Turnitin, Originality.ai, and Copyleaks, while keeping the original meaning intact and producing plagiarism-free output.

For agents: Free AI humanizer and AI detector that rewrites LLM-generated text to sound human, plus a human-style AI writer; free tier with paid plans.

ai humanizerai detectortext rewritingai writingplagiarism-free

Their llms.txt

The beginning of the file, from our validated copy saved 2026-10-21T12:32:37.554Z. Cached copy · Source on humanizerpro.ai

# HumanizerPRO

> HumanizerPRO is a free AI humanizer and AI-to-human text converter. It rewrites AI-generated text (from ChatGPT, Claude, Gemini, and other LLMs) into natural, human-sounding writing that aims to read past AI detectors such as GPTZero, Turnitin, Originality.ai, and Copyleaks, while keeping the original meaning intact and producing plagiarism-free output.

Key facts:

- Anonymous (no account) users can humanize up to 500 words per request, up to 500 words total per month, resetting automatically each month.
- Creating a free account raises that to 1,000 words per request and 1,000 words per month, plus saves your history and gives faster, no-re-verification access.
- All three humanization modes (Basic, Standard and Advanced) are free for every user, including visitors without an account. Only the PRO Engine is premium.
- Paid plans (Basic, Pro, Advanced) raise per-request limits to 600 / 1,200 / 3,000 words and yearly quotas to 180,000 / 600,000 / 2,000,000 words (about 15,000 / 50,000 / 167,000 a month), and unlock the premium PRO Engine and higher limits on the AI Detector, Plagiarism Checker, and Fact Checker. Yearly prices are $7 / $12 / $19 a month, with a 3-day money-back guarantee.
- The free-standing AI Detector, Plagiarism Checker, and Fact Checker tools each have their own per-request limit, separate from the humanizer's word pool: 800 words free (AI Detector), 1,000 words free (Plagiarism Checker), 500 words free (Fact Checker); all raised substantially on paid plans.
- Supports 8 languages: English, French, Dutch, Italian, German, Spanish, Russian, and Portuguese.
- Content is processed to generate a result and is not stored or used for model training.
- A REST API is available for developers to integrate humanization, AI detection, fact-checking, and plagiarism-checking at scale, all under one API key.

## Main tools

- [AI Humanizer (homepage)](https://humanizerpro.ai/): Paste AI-generated text, choose Basic/Standard/Advanced mode and a tone, get human-sounding output.
- [Human AI Writer](https://humanizerpro.ai/human-ai-writer): Writes blog posts, essays, emails, articles, product descriptions, social posts, stories and cover letters that sound human and pass AI detectors (an undetectable AI writer). Three steps in one click: drafts from your topic and key points, humanizes the draft with the HumanizerPRO engine, then fixes issues on autopilot so the meaning stays intact. 1 free generation without an account, 1 more a month with a free account; paid plans use their monthly word balance.
- [AI Detector](https://humanizerpro.ai/ai-detector): Free AI detector (800 words per check, no sign-up; up to 5,000 on paid plans) that gives an overall AI score and highlights every sentence as likely AI, possibly AI or likely human. Score bands: under 30% likely human, 30-69% mixed, 70%+ likely AI. In HumanizerPRO's October 2026 test it rated all 60 ChatGPT (GPT-4.1) texts as AI or mixed (57 likely AI, average 90% AI) and 23 of 3
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Claim my listing on Agent Web Map for humanizerpro.ai:
1. POST https://agentwebmap.com/v1/sites/humanizerpro.ai/claims and keep claim_id and claim_secret private.
2. Publish the proof: add the line "AgentWebMap ownership: <token>" (token from step 1) to https://humanizerpro.ai/llms.txt, or use the DNS, meta-tag or well-known method the response describes.
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MCP equivalent: tools begin_ownership_claim, then verify_domain, at https://agentwebmap.com/mcp. Docs: https://agentwebmap.com/docs#verify

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