AI humanizer tools are platforms or services designed to refine AI-generated text, such as content produced by ChatGPT or other large language models, so it reads more naturally and authentically.
By enhancing tone, flow, and emotional nuance, these tools help transform robotic-sounding content into writing that feels like it came from a real person. They typically do the following things:
Rephrase robotic or generic AI language
Add human-like tone and nuance
Remove AI detection traces
Polish grammar and flow
Here's a closer look at the top options you can choose from.
1. StealthGPT
StealthGPT uses custom-trained models that replicate human writing patterns closely enough to consistently bypass Turnitin and other academic-grade detectors.
Features:
Built-in stealth modes for different use cases (school, SEO, casual)
API and iOS app support
Mimics different writing styles including academic, conversational, and professional tones
Supports thousands of languages for global usability
Pricing:
| Plan |
Price |
Description |
| Essential |
$24.99/mo |
- Study Simulator, Unlimited Words
- AI Humanizer
- Stealth Writer |
| Pro |
$34.99/mo |
- Everything in Essential
- Chat with Stealth
- 100+ Languages Supported |
| Business |
$49.99/mo |
- Everything in Essential and Pro
- SEO Writer
- Third Party Integrations (Coming Soon) |
| Enterprise |
$249.99/mo |
- Everything in Essential, Pro and Business
- Unlimited Everything |
2. WriteHuman
WriteHuman is designed for content that needs both subtlety and structure. It focuses on preserving the core message while restructuring sentences to sound personal and authentic.
Features:
Adaptive rewrite engine that maps original intent to human logic patterns
Detectors tested: GPTZero, ZeroGPT, Copyleaks, and Originality. ai
Offers an “Undetectable” score for peace of mind before submission
Supports academic citations and formatting refinement
Includes a free AI detector to analyze and improve content transparency
Pricing:
| Plan |
Price (billed annually) |
Description |
| Basic |
$12/mo |
- 80 humanizer requests per month
- 600 words per request |
| Pro |
$18/mo |
- 200 humanizer requests per month
- 1200 words per request |
| Ultra |
$36/mo |
- Unlimited requests per month
- 3000 words per request |
3. Walter Writes AI
Walter Writes is built for writers, students, and professionals who want their AI-generated text to sound human. Walter takes rewritten output from ChatGPT, Claude or Gemini, and transforms it into content that reads naturally and is difficult to identify as AI-generated.
Features:
Rewrite and instantly analyze your text with Walter’s advanced detection system.
Achieves high human scores across Turnitin, GPTZero, Originality, and Copyleaks.
Choose between Simple, Standard, or Enhanced rewrites for different levels.
Maintain your original tone, structure, and intent while improving readability.
Pricing:
Includes a free 300-word trial. No credit card required.
| Plan |
Price |
Description |
| Starter |
$8/mo |
30,000 words/month 750 words per request Built-in AI detector |
| Pro |
$13/mo |
70,000 words/month 1,500 words per request Built-in AI detector |
| Unlimited |
$26/mo |
Unlimited words/month 2,000 words per request Built-in AI detector |
4. Undetectable AI
Undetectable AI is built for users who want speed, accuracy, and stealth. It rewrites and humanizes AI text to pass even the strictest detection systems while supporting multiple languages.
Features:
Shows a real-time preview of how likely your content is to be flagged by detectors like GPTZero, Turnitin, Copyleaks, and ZeroGPT
Multilingual support for international content needs
Fine-tuning with a human-likeness slider and “academic/business/blog” tone modes
Improve SEO and user engagement
Pricing: Includes a free 3-day trial and various paid plans.
| Plan |
Price |
Description |
| Yearly |
$5.00/mo |
10,000 words per month |
| Monthly |
$19.00/mo |
20,000 words per month |
| Business |
Custom |
Custom pricing and plans,
non-expiring credits,
redistribution and white labeling |
5. Humanize AI
Humanize AI offers a no-frills interface and quick conversions, suited for users who need minimal manual input but still want reliable AI-human transformation.
Features:
Pre-processing filters eliminate AI-generated syntax markers before rewriting
Focused on improving sentence rhythm and conversational cadence
Ideal for marketing emails and blog content with tone softening
Fast output for short-form needs, such as captions or blurbs
Pricing:
| Plan |
Price |
Description |
| Lite |
$19/mo |
20,000 words per month
500 words per process |
| Standard |
$29/mo |
50,000 words per month
Re-paraphrasing is free
Unlimited words per process |
| Pro |
Custom |
Custom |
6. Ghost AI
Ghost AI is tailored for long-form content, where continuity, tone stability, and coherence are crucial. It processes multiple layers of AI revision to create nuanced text.
Features:
Layered rewrite system to maintain topic consistency over paragraphs
Style presets for academic, formal, and creative writing
Built-in plagiarism checker with citation suggestions
Pricing:
| Plan |
Price |
Description |
| Personal |
$9/mo |
20,000 words per month |
| Business |
$20/mo |
100,000 words per month |
| API |
$0.0002/word |
1M+ words per month |
7. Bypass GPT
Bypass GPT is ideal for those needing advanced detection evasion with high accuracy and low distortion.
Features:
Context-aware rewriting that avoids over-simplification
Auto-optimizes for detection bypass and readability in one pass
Optional keyword retention for SEO-sensitive rewrites
Generates plagiarism-free content for clean, original outputs
Pricing:
| Plan |
Price |
Description |
| Free |
$0/mo |
150 words per month
Humanize up to 80 words per input |
| Basic |
$8/mo |
5,000 words per month
Humanize up to 500 words per input |
| Pro |
$15/mo |
30,000 words per month
Humanize up to 1,000 words per input |
| Unlimited |
$19/mo |
Unlimited words per month
Unlimited words per input |
8. QuillBot
QuillBot is a versatile paraphraser with multiple modes to adjust fluency, creativity, and tone in AI text. It also includes grammar and summarization tools.
Features:
Seven paraphrasing modes: Standard, Fluency, Creative, Formal, Shorten, Expand, and Custom
Built-in plagiarism checker and grammar assistant
Provides seamless integrations with Google Docs, Microsoft Word, Chrome, Safari, and desktop/mobile apps for real-time, inline rewriting
Batch paraphrasing for large documents
Pricing:
| Plan |
Price |
| Free |
$0 |
| Premium |
$4.17/mo |
| Team Plan |
Custom |
9. AIHumanizer
AIHumanizer focuses on fooling detection software using custom sentence restructuring and emotional depth insertion without requiring user prompts.
Features:
Rewrites text with emotion-infused language to mimic human subjectivity
Prebuilt templates for blogs, essays, and ad copy
Lightweight tool—no login or software installation required
Supports real-time previews and multi-language output
Pricing:
| Plan |
Price |
Description |
| Free |
$0 |
Limit of 300 words |
| Unlimited |
$14.99/mo |
Unlimited words along with advanced model and grammar checker |
10. Twixify
Twixify is made for agencies and bulk content creators. It provides scalable humanization with SEO-focused features that preserve keyword density while rewriting. The team is currently in the final stages of developing their most potent model yet, which will allow users to clone their unique writing style and bypass all major AI detectors.
Features:
Batch rewriting support for high-volume content needs
Maintains formatting (H1s, lists, links) while rewording
Mimics a brand’s or individual’s unique voice across all generated content to maintain consistency in tone and style
Auto-optimizes for search engine readability and detector bypass
Pricing:
| Plan |
Price |
Description |
| Basic |
$5/mo |
400 words per cycle
75 monthly requests |
| Standard |
$9/mo |
600 words per cycle
150 monthly requests |
| Lifetime Plan |
$150/lifetime |
1000 words per cycle
Unlimited monthly requests |
11. AI Humanizer Pro
AI Humanizer Pro is a helpful tool for writers, marketers, and professionals who want to convert AI-generated text into clear, natural, human-like writing. It keeps your main idea the same but makes the content sound smoother and more natural. It is also useful if you want your text to avoid AI detection.
Features:
Three modes: Basic, Standard, Advanced to choose how much rewriting you want.
An AI detector that checks how AI-like your content is.
A built-in plagiarism checker and fact checker to keep your writing original and accurate.
Supports many languages.
Can bypass popular AI detectors like GPTZero, Turnitin, ZeroGPT, and others.
Pricing:
| Plan |
Price / Month |
Description |
| Basic |
$7 / mo |
15,000 words/month; 600 words per input; limited AI detector, plagiarism checker & fact checker. |
| Pro |
$12 / mo |
50,000 words/month; 1,300 words per input; standard AI detector + checkers. |
| Advanced |
$19 / mo |
Up to 1 million words/month; 3,000-word inputs; full detector, plagiarism & fact-checking. |
Conclusion
The best AI humanizer tools don't just avoid detection, they refine tone, preserve meaning, and adapt to your writing goals.
Choosing the right humanizer means finding the one that aligns with your workflow, whether that’s SEO scalability, academic accuracy or brand voice consistency. Test a few, compare their output, and invest in the tool that not only hides the AI but brings out the human behind your message.
