Grubby AI Humanizer: Can it Bypass GPTZERO, Orignality and Turnitin?
In 2025, using AI to write content has become common, but so has the challenge of getting past AI detectors. Tools like Turnitin, GPTZero, and Originality.ai are now stronger than ever. That’s where tools like Grubby AI humanizer step in, promising to make your content look like a real person wrote it.
So, does Grubby AI actually work? Is it safe, and how does it compare to more advanced tools like RewriterPro.ai?
Let’s break it down.
Please note: By using our AI humanizer and reading our reviews, you agree not to engage in academic misconduct or cheating.
What Is Grubby AI?
Grubby AI is a tool that takes AI-generated text and changes it so it sounds more human. Its main job is to help you pass AI detectors without getting flagged. You just paste your content in, hit a button, and it gives you a new version that looks less robotic.
Key Features:
- Bypass AI Detection: Changes sentence structure and words to avoid being flagged.
- Multilingual Support: Works in over 30 languages.
- Modes: Simple (free), Standard and Enhanced (paid).
- Watermark Removal: Removes markers that detectors look for.
💰 Grubby AI Pricing Plans
| Plan | Price/month | Word Limit | Key Features |
|---|---|---|---|
| Free | $0 | 400 words | Simple Mode, basic AI rewrite |
| Essential | $4.99 | 5,000 words | Simple Mode, watermark remover |
| Pro | $9.99 | 30,000 words | Standard & Enhanced modes |
| Business | $19.00 | Unlimited | All features included |
✅ Pros and ❌ Cons
| ✅ Pros | ❌ Cons |
| Easy to use | Limited editing control in free version |
| Supports many languages | Not ideal for tone/style personalization |
| Good for quick rewriting | Advanced tools locked behind paywall |
| Works well with major detectors | Still needs final edits for best results |
🧪 Testing Grubby AI Against AI Detectors
We tested Grubby AI using content created by ChatGPT and ran it through top AI detectors. The original content was 100% AI-generated. Here's what we found:
GPTZERO Test Results:
Orignality AI Test Results:
| Detector | Before Grubby | After Grubby | Considered "Human" Below |
| GPTZero | 100% AI | 6% AI | 20% |
| Turnitin AI | ❌ Couldn’t test directly | — | — |
| Originality.ai | 100% AI | 100% AI | 30% |
👉 Explanation: While Grubby AI performed impressively on GPTZero, reducing the AI detection score from 95% to 12%, it couldn't beat Originality.ai. The original content was flagged as 100% AI, and even after using Grubby AI, the detection score stayed at 100%.
Unfortunately, we couldn’t test Turnitin directly due to access limitations, so we used Originality.ai as a strict benchmark.
👉 Takeaway: Grubby AI works well against softer detectors like GPTZero, but stricter tools like Originality.ai still identify the content as AI-generated—even after humanizing.
🎯 If you’re serious about beating advanced detectors and need natural tone, SEO, and editing power—give RewriterPro.ai a try.
📌 Key Takeaways
- Grubby AI is simple and effective at changing AI content to sound human.
- It works best for students and casual writers, but not ideal for professional use.
- It lowered AI detection scores in GPTZero but failed with Originality.ai.
- Turnitin could not be tested, but results suggest mixed reliability.
- Best for fast and basic rewriting—struggles with stricter tools.
🔄 Grubby AI vs. RewriterPro.ai
Let’s compare Grubby AI with RewriterPro.ai—a newer, more advanced tool.
| Feature | Grubby AI | RewriterPro.ai |
| Bypass AI Detectors | ✅ Yes | ✅ Yes |
| Tone/Style Adjustments | ❌ No | ✅ Yes |
| SEO Tools | ❌ No | ✅ Built-in keyword suggestions |
| Customization Options | ❌ Limited | ✅ Full sentence control |
| Best For | Students, bloggers | Writers, marketers, editors |
| Price | Starts at $4.99/month | Flexible plans & lifetime options |
👉 Midway Tip: If you need more than just bypassing AI detectors—like sounding natural or optimizing for search—RewriterPro.ai is the better tool.
🗣️ What Users Say
"Grubby AI helped me get past my university’s AI checks, but I still had to tweak the tone myself." — Samir, student
"Quick and easy to use, but not enough if you're writing for a blog or business." — Ella, freelancer
❓ FAQs
Q: Can Grubby AI guarantee 100% AI detection bypass?
A: No tool can promise that, but Grubby AI does reduce the chances significantly—especially for detectors like GPTZero.
Q: Is Grubby good for SEO writing?
A: Not really. It doesn’t optimize for keywords or structure.
Q: Can I trust it with sensitive content?
A: It's secure, but always double-check final content before publishing.
Q: Better than RewriterPro.ai?
A: Only if your goal is basic humanization. For more control, tone, and SEO—RewriterPro.ai is the smarter choice.
🏁 Final Verdict
Grubby AI is great if you need something quick, easy, and cheap. It gets the job done for basic rewriting and helps you stay under the radar of AI detectors like GPTZero.
But if you're writing for a blog, brand, or academic setting, and you want your writing to sound natural, pass stricter detectors like Originality.ai, and rank on Google—then RewriterPro.ai is worth the upgrade.
It's not just about hiding from AI detectors anymore. It's about writing content that feels real—and RewriterPro gets that right.