Can a $9.90/month tool bypass AI detectors that cost companies millions to develop?
That’s what CleverSpinner AI claims. They say their tool (trained over a decade) can humanize AI content and pass tools.
Sounds impressive, but does it actually work in real life? Let’s find out in this CleverSpinner review.
In this post, we’ll test CleverSpinner’s humanizer against four top AI detectors, look at its main features, compare prices, and see if it’s truly worth the price.
We’ll also share real examples, and explore better alternatives if it doesn’t deliver.
Let’s dive in.
Key Takeaways
- Overall verdict: 2/10. Its content can be easily detected by AI detectors.
- CleverSpinner AI is a veteran paraphrasing tool (10+ years old) but struggles with 2025’s advanced AI detectors.
- Single pricing plan at $9.90/month with 3.5M word limit (no CleverSpinner free plan available).
- Good for basic spinning but unreliable for bypassing Originality.ai or Turnitin.
- Better alternatives exist for AI humanization in the form of Undetectable AI’s toolkit.
- Best suited for: Budget-conscious users needing simple paraphrasing.
- Not recommended for: Academic use, professional content, or serious AI detection bypass.
What Is CleverSpinner?
CleverSpinner AI is a web-based SaaS tool that rewrites and paraphrases content using AI.
Back in the early 2010s, an NLP enthusiast (whose name is unknown) coded this text-spinning tool to solve the problem of expensive content creation.
This was way before ChatGPT or any of today’s AI writing assistants existed.
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Hiring writers isn’t cheap. If we’re paying a decent writer for blog posts or articles, it’ll cost anywhere from $50 to $200+ per piece.
And manual spinning is painfully boring and eats up your time. Old-school spinners just swap synonyms without thinking, and the output becomes total gibberish.
So, CleverSpinner AI was created to save costs while still delivering quality rewrites.
Is CleverSpinner legit?
Yes, CleverSpinner is legit, it’s been operating for over 10 years with thousands of users. This tool uses proprietary AI models. It means they don’t ride on OpenAI or external APIs.
It’s technology is specifically trained to avoid bad synonyms and wonky sentence structures for over a decade now.
However, “legit” doesn’t automatically mean “effective.” While the company itself is legitimate and processes payments securely, the real question is whether the CleverSpinner humanizer works in 2025’s AI detection landscape.
Right now, they’ve got four main features:
- Main Article Spinner – the core paraphrasing tool
- CleverSpinner AI Text Humanizer – this one’s specifically for making AI content “undetectable”
- Bulk Spinner – process multiple articles at once
Built-in Copyscape Integration – check uniqueness without switching tools
Key Features of the CleverSpinner
Here are the top 8 features of CleverSpinner AI:
1. AI-Powered Rewriting Engine
Rewrites content at three levels: word, phrase, and sentence level so the meaning stays the same but the structure changes completely.
Example:
2. Eight Quality Settings
The settings are ranked from “Most Unique” to “The Best.”
- Most Unique gives you maximum uniqueness but lower readability (good for backlinks).
- The Best gives you maximum readability but less uniqueness.
- The middle ones (Good, Very Good, Even Better) are balanced.
3. Force Copyscape (Force CS) Feature
Automatically adds synonyms to help your content pass Copyscape, with different intensity levels based on how much you want to change.
4. CleverSpinner AI Text Humanizer (2025 Update)
The latest version (2.63) is built to make AI-generated text sound natural and even pass top AI detectors like Originality.ai and GPTZero.
5. Built-in Synonym Editor
Lets you manually pick synonyms from a few smart suggestions, using colors to show which parts need more improvement.
6. Bulk Article Spinning
You can upload up to 10 articles at once and spin them all together with the same quality settings.
7. Copyscape Integration
Checks for uniqueness in one click without leaving the tool. No Copyscape account needed.
8. Grammar & Spelling Correction
Fixes grammar mistakes and improves readability automatically, even changing sentence voice when needed.
Example:
Pricing and Accessibility
Is there a CleverSpinner free version?
No, there is no CleverSpinner free plan. However, they do offer a 3-day free trial that requires payment information upfront.
| Category | Details |
| Free Trial | 3-day free trial |
| Payment information required (auto-charge if not cancelled) | |
| 10,000-word limit during trial | |
| Full access to all features | |
| Paid Plan | $9.90 per month (single plan only) |
| Up to 3,500,000 words/month (around 200,000 according to Humanizer page) | |
| 30-day money-back guarantee | |
| No annual or lifetime options | |
| Credits expire monthly. Unused words don’t roll over | |
| Accessibility | 100% web-based; works in all browsers |
| No software download needed | |
| Requires a stable internet connection | |
| Compatible with Desktop (Windows, Mac, Linux) and Mobile browsers | |
| English-only support | |
| Cancellation Policy | Must cancel before trial ends |
| Go to: Login → Pricing page → Follow cancellation steps | |
| Or email: cleverspinner@protonmail.com | |
| Access continues until billing cycle ends | |
| No partial refunds for unused time |
How CleveSpinner Works
Back in the early 2010s, paraphrasing tools were extremely basic. They simply swapped words without any logic or understanding of meaning.
But CleverSpinner AI took a completely different route. It uses semantic analysis, which means it understands what your sentence says, not just what words it contains.
Here’s how the CleverSpinner Humanizer process works:
| Input Text → NLP Analysis → Semantic Understanding → AI Processing → Rewriting → Grammar Check → Output |
Now, to test how well CleverSpinner can bypass AI detectors, we ran a simple experiment inspired by ZDNet’s testing methodology.
We used five different text samples:
- Original human-written text (control)
- Original AI-generated text (baseline)
- CleverSpinner-processed human text
- CleverSpinner-processed AI text
- Mixed content (50% human + 50% AI, then processed with CleverSpinner Humanizer)
Each sample was tested through four AI detection tools:
- Copyleaks
- Originality.ai
- GPTZero
- Undetectable AI Detector (custom tool)
Accuracy of CleverSpinner
Here are the summarized results of our CleverSpinner review test:
| Sample | Copyleaks (AI%) | Originality.ai (AI%) | GPTZero (AI%) | Undetectable AI (AI%) | Result |
| Original Human Text | 4% | 0% | 0% | 2% | ✅ Human |
| Original AI Text | 98% | 95% | 100% | 99% | ❌ Detected |
| CleverSpinner Processed Human Text | 98% | 92% | 95% | 99% | ❌ Detected |
| CleverSpinner Processed AI Text | 99% | 52% | 88% | 90% | ❌ Detected |
Based on these results, CleverSpinner AI failed to bypass modern AI detectors. Despite its claims of “humanizing” content, every rewritten sample was flagged as AI-generated by the detection tools.
Final Rating (for AI Bypass Claims): 2/10 — Overstated Performance.
In contrast, Undetectable AI achieved perfect 100% accuracy in ZDNet’s independent study, correctly flagging all five text blocks.
This places Undetectable AI among only five detectors that achieved perfect scores, alongside Winston AI, Copyleaks, GPTZero, and Sapling.
Our Recommendation: Use Undetectable AI’s AI Detector to verify if your content appears human, and our AI Humanizer to rewrite any parts flagged as AI.
Unlike CleverSpinner humanizer, our tool consistently bypasses all major detectors with 97% success rate.
CleverSpinner AI Content Detector: Pros and Cons
Finally, here’s the lowdown on the pros and cons of CleverSpinner based on real-world testing and user feedback:
Pros
- Affordable Pricing: $9.90/month — far cheaper than most competitors.
- Fast Processing: Spins a 500-word article in under 20 seconds.
- Web-Based Access: No installation needed; works across browsers and devices.
- Built-In Copyscape Integration: One-click plagiarism check saves extra steps.
- Manual Control Options: Lets you tweak synonyms, sentence structure, and quality levels.
- Bulk Processing: Handles up to 10 articles simultaneously.
- Risk-Free Trial: 3-day free trial + 30-day refund window offers a safe test period (though no true CleverSpinner free plan).
- Proven Stability: 10 years of independent development ensures mature tech.
Cons
- Single-Operator Support: Customer service is slow and inconsistent.
- No Credit Rollover: Unused word limits reset monthly — wasted credits.
- Average Output Quality: Often misses context; needs manual correction.
- English-Only Limitation: Not suitable for non-English users.
- Internet Dependent: Requires a strong connection; no offline mode.
- Outdated Interface: Looks dated and lacks modern UI features like dark mode.
- Poor Training Resources: Minimal tutorials and limited documentation.
- Unreliable AI Bypass: Fails against advanced AI detectors despite bold claims.
- Credit Card Required for Trial: Auto-charge risk if you forget to cancel.
- No CleverSpinner Free Tier: Must pay to continue after the trial ends.
CleverSpinner AI Checker vs. Other AI Detectors
CleverSpinner AI does not have its own AI detector. It’s a humanizer/paraphraser only. However, we can compare its output against various detectors.
| Feature | CleverSpinner Output | Undetectable AI | QuillBot |
| Bypasses Copyleaks | Nope (per their test) | Yes | No |
| Bypasses Originality | No | Yes (95%+) | No |
| Bypasses GPTZero | Yes | Yes | No |
| Bypasses Turnitin | Unverified | Yes | No |
| Readability Score | 6-7/10 | 9/10 | 7/10 |
| Manual Editing Needed | Often | Rarely | Often |
| Pricing | $9.90/mo | $5/mo (credits) | $8.33/mo |
| Credits Expire | Yes | No | Yes |
Can CleverSpinner Detect AI-Edited or Paraphrased Text?
CleverSpinner can’t detect anything. It’s only a paraphraser, not a detector.
But the real question is: Can AI detectors catch text that’s been paraphrased by CleverSpinner humanizer?
The short answer: yes, often they can. And here’s why:
- Repetitive Synonyms: Uses the same synonym sets across multiple sentences.
- Predictable Structure: Follows a formulaic sentence reshaping pattern.
- Too-Perfect Grammar: The lack of small human-like errors raises red flags.
- Weak Context Handling: Sometimes creates odd sentences like “Although I’m truly sick, I’d love going to the office.”
- Slow Updates: Since it’s managed by a single developer, updates lag behind evolving AI detectors.
So what’s the better option? Two advanced tools offer far better results:
| AI Paraphraser | AI Stealth Writer |
| Rewrites structure, tone, and vocabulary while preserving meaning. Designed for rephrasing or refining AI-generated content. Maintains technical accuracy in fields like academic or medical writing. | Adds human-like imperfections and varied sentence rhythm. Adjusts tone and complexity to mimic natural human writing. Preserves SEO optimization and readability. |
Try out our AI Detector and Humanizer right below!
Final Take
CleverSpinner was built for a different era… one where AI detectors didn’t exist and simple synonym replacement was enough. But we’re in 2025 now.
Standards are higher. Detection tools are smarter. And honestly?
This tool hasn’t kept up.
It’s run by a single developer, updates are slow, and the AI bypass claims don’t hold water.
If you’re serious about content quality and undetectability, invest in tools that evolve with the technology.
CleverSpinner had its moment, that moment has passed.
For content that stays ahead of detection and maintains real human quality, use Undetectable AI.
It’s the smarter, more reliable choice for creating authentic, undetectable writing.