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Best QuillBot Alternative for AI Detection

QuillBot Can't Bypass
AI Detectors. We Can.

QuillBot is a paraphraser, not an AI humanizer. Its output still gets flagged by Turnitin, GPTZero & Originality.ai. SupWriter is purpose-built for AI detection bypass with 99%+ success rate.

300 free words - No credit card required

Feature
QuillBot
SupWriter
Purpose
Paraphrasing
AI Detection Bypass
Passes Turnitin
Passes GPTZero
Passes Originality.ai
Natural Output
Often awkward
Human-like
Meaning Preservation
Can distort tone
Excellent
Built-in AI Detector
Free Trial
125 words
300 words
Fix Selection Feature
Add Extra Credits (Pro/Ultra)

Why QuillBot Fails at AI Detection Bypass

🎯

Wrong Tool for the Job

QuillBot is designed for paraphrasing, not evading AI detection. Different problems need different solutions.

🔍

Detectors Catch Patterns

Simple synonym swapping doesn't fool modern AI detectors that analyze perplexity and burstiness.

✍️

Output Sounds Robotic

Aggressive paraphrasing creates awkward, generic prose that still triggers detection flags.

Experience the Difference - Try SupWriter Now

See how SupWriter creates truly undetectable content that QuillBot can't match

Your Text
Writing Style
Content Type
Language
0 / 500 words

Humanize AI Writing in 3 Simple Steps

Transform AI-generated content into natural, human-like text that bypasses detection

Step 1

Your Text

Paste your AI-generated text here

Paste Your AI-Generated Text

Copy any content — assignments, blog posts, or AI-generated text.

Step 2

Result

0%
HUMAN WRITTEN

Check AI Score

See how much of your text is flagged as AI-written by detection systems.

Step 3
or select text & ask AI
Ask or type your prompt...

Edit or review selection

Improve writing
Fix grammar
Make shorter
Make longer

Use AI to do more

Continue writing

Humanize & Improve selection

Transform your text to sound 100% human-written. Select any text to improve, fix the grammar, shorten, or lengthen it.

1.2M+
Training Samples
<5s
Processing Time
99.7%
Success Rate
50K+
Monthly Users

Engineered for
Undetectable Results

Our rewriting engine is trained on over 1.2 million samples of academic writing, essays, and AI-generated text to understand the nuances of human writing.

Advanced Linguistics

Analyzes syntax, tone, and word patterns to remove robotic footprints.

Smart Restructuring

Restructures sentences while preserving your original meaning and intent.

Adaptive Learning

Continuously updates to bypass the latest AI detection algorithms.

Ask AI to Fix Selection

Select any text and use AI to improve, fix grammar, shorten, lengthen, or customize with your own prompts.

analysis_mode: active
AI Detected98% Confidence

The rapid advancement of artificial intelligence has transformed numerous domains...

Humanized100% Human Score

AI's quick growth has changed many fields, creating both new chances and tough questions...

Tested and Proven Across All AI Detectors

We test every rewrite against leading detection tools like GPTZero, Turnitin, ZeroGPT, and more. Our system is updated weekly to adapt to new detection methods and eliminate flagged patterns.

ZeroGPT logo
ZeroGPT
Copyleaks logo
Copyleaks
Turnitin logo
Turnitin
QuillBot logo
QuillBot
GPTZero logo
GPTZero
GrammarlySaplingOpenAIClaudeGeminiGrok

98.7%success rate across all major detection platforms

JKSMALRWMC100k+
100K+

Trusted by 100,000+ Writers Worldwide

Students polish their writing to sound more natural, marketers improve content for better engagement and SEO, and businesses send emails that feel personal — not robotic.

SupWriter adapts to each use case
Delivering clear, human-sounding text
That reads like it was written by you

What Our Users Say

Thousands of writers trust SupWriter every day

"My professor commended the uniqueness of my AI-generated essay after I used SupWriter to make it sound remarkably natural. Strongly advised for students!"
Marco D.
Student
"That Fix Selection feature is a game-changer! By selecting any text, I can improve it, fix the grammar, or make it shorter. My content workflow has never been faster with humanization."
Aisha M.
Content Writer
"What impressed me most about SupWriter is how seamlessly it polishes my drafts. My clients noticed the difference immediately in the quality and tone."
Brandon L.
Freelancer

Supporting Writers at Top Institutions

Harvard University logo
Harvard University
University of Oregon logo
University of Oregon
University of Leeds logo
University of Leeds
Ateneo de Manila logo
Ateneo de Manila

Used by students and researchers at leading educational institutions globally

FAQ

Common questions about SupWriter

SupWriter uses advanced AI algorithms trained on millions of text samples to rewrite your content. It analyzes patterns that AI detectors flag and restructures sentences to sound more human while preserving your original meaning and intent.
Get Started Today

Ready to Write with Confidence?

Join thousands of students and researchers who trust our AI-powered rewriting tool to create authentic, undetectable content.

100% Secure
Privacy Protected
Instant Results
Under 5 Seconds
AI-Powered
1.2M+ Samples

No credit card required • Free tier available • Cancel anytime

QuillBot Alternatives - AI Humanizer That Bypasses Detection | SupWriter