Is GPTZero letting you down? Let’s be honest.
This tool can be frustrating. It often flags human text as AI.
This is called a false positive. You might also miss actual AI content.
This double-checking wastes your time. It makes your job much harder.
You need a reliable tool you can trust every single time.
Stop stressing over inaccurate results. We tested the top options for you.
This guide has the 9 best GPTZero Alternatives that offers better accuracy and smarter checks.
Find the perfect AI detector for your needs today.
What Are the Best GPTZero Alternatives?
We know you need a dependable AI checker.
The market has many options, but which ones actually work?
We looked at accuracy, ease of use, and price. We picked only the most reliable tools.
Our list below shows the best alternatives you can use right now.
1. Copyleaks (⭐4.8)
This tool is super accurate.
It helps you find AI text even when it’s mixed with human writing.
Copyleaks checks content in over 30 languages.
It gives you a clear report that shows the parts that look like AI.
Key Benefits
Copyleaks has some great, unique features. It helps keep your work safe and honest.
- It claims over 99% accuracy in its internal testing.
- It has an incredibly low 0.2% false positive rate, which means it rarely flags human work by mistake.
- The tool checks for AI content in over 30 languages.
- It offers a unique feature called AI Logic that explains why the content was flagged.
- It includes AI Image Detection and can check for source code plagiarism.
Pricing
- Personal: $13.99/month.
- Pro: $74.99/month.
Pros
Cons
2. Originality AI (⭐4.5)
Originality AI is focused on creators and marketers.
It tells you the exact probability that your text is AI-generated or human-written.
This tool can also check for plagiarism. It has a low false-positive rate among educators.
You can start with a free trial. You then buy credits based on how many scans you make.
Our Take
Ready to ensure your content is 100% human-generated? Originality AI boasts a 94% accuracy rate in detecting AI-written text. Don’t risk your reputation – Go for Originality AI today!
Key Benefits
- Accuracy: Boasts 98-100% accuracy.
- False Positives: Has a very low false positive rate, around 2%.
- Warranty: Provides a 7-day satisfaction guarantee.
- Features: Detects AI-generated and AI-edited content, includes a powerful plagiarism checker, scans entire websites, supports detection in multiple languages, offers an API for custom integrations.
Pricing
- Pro: $12.95/month.
- Pay-as-you-go: $30 (One time on demand pricing).
- Enterprise: $136.58/month.
Pros
Cons
3. QuillBot (⭐4.0)
You probably know QuillBot for fixing and rewording text.
But it also has a great AI detector. The tool is very simple to use.
Just paste your text to get a score right away. It is free for basic checks.
This makes it a fast and easy option when you are in a hurry.
Our Take
Ready to transform your writing? Over 50 million users have already experienced Quillbot’s powerful paraphrasing capabilities. Explore it now!
Key Benefits
- Accuracy: Achieves around 90% accuracy for general AI detection.
- False Positives: Known for a reasonable false positive rate, typically under 5%.
- Warranty: Offers a 3-day money-back guarantee on premium plans.
- Features: Distinguishes AI-generated from AI-assisted human text, integrated with paraphrasing and grammar tools, offers free scans for shorter texts, provides detailed analysis reports, easy to use interface.
Pricing
All the plans will be billed annually.
- Free: $0/month.
- Premium: $4.17/month.
- Team Plan: Custom pricing based on your needs.
Pros
Cons
4. Winston AI (⭐3.8)
Winston AI claims super high accuracy. It is built for schools and publishers.
This tool gives your text a “Human Score.”
It uses color-coding to show what parts are predictable.
Note that it works best with documents over 600 characters.
It also offers a plagiarism check if you upgrade.
Key Benefits
- Accuracy: Claims an impressive 99.98% accuracy.
- False Positives: Reports a near-zero false positive rate.
- Warranty: Includes a 14-day refund policy.
- Features: Detects AI content from various models like GPT-4o and Gemini, includes an optical character recognition (OCR) feature, offers AI image detection, provides batch processing for bulk checks, has a clean, intuitive design.
Pricing
- Free: $0/month.
- Essential: $10/month.
- Advanced: $16/month.
- Elite: $26/month.
Pros
Cons
5. Smodin (⭐3.5)
Smodin is a whole set of writing tools.
The AI detector checks content down to the sentence level.
It also has a special feature. You can use it to rewrite AI text to sound more human.
Smodin is used by millions worldwide.
It aims to help you detect AI and avoid penalties.
Key Benefits
- Accuracy: Provides around 95% accuracy for AI content.
- False Positives: Has a low false positive rate, typically 3-4%.
- Warranty: No specific warranty mentioned; relies on subscription terms.
- Features: Combines AI detection with plagiarism checking, supports multiple languages, offers a content rewriter tool, includes a citation generator, good for academic and research papers.
Pricing
All the plans will be billed annually.
- Writing: $9/month.
- Reviewing: $15/month.
- Ultimate: $18/month.
Pros
Cons
6. Quetext (⭐3.2)
Quetext is a popular plagiarism checker.
It uses its own DeepSearch™ technology.
This technology finds all kinds of copying, even if you reword the text a little.
It uses AI to do these detailed checks. Quetext is simple to use.
It gives a clear, side-by-side view of matched sources.
Key Benefits
- Accuracy: Delivers approximately 92% accuracy in AI detection.
- False Positives: Maintains a low false positive rate, around 4%.
- Warranty: No explicit warranty; focuses on subscription service.
- Features: Uses “DeepSearch” technology for thorough analysis, highlights both AI and plagiarized content, offers a clear, color-coded report, provides a citation assistant, good for academic and journalistic integrity.
Pricing
All the plans will billed annually.
- Free: $0/month.
- Enterprise: $11.99/month.
- Essential: $13.99/month.
Pros
Cons
7. Undetectable (⭐3.0)
This tool is mostly an AI Humanizer.
It takes AI-written content and tries to make it sound human.
The goal is to bypass other AI detectors. It is easy to use and processes text fast.
However, you should always check the quality.
Sometimes the rewritten text needs more fixing.
Our Take
Give Undetectable AI a try! It bypasses 98% of AI content detectors, ensuring your AI-generated text goes undetected. Explore it today!
Key Benefits
- Accuracy: Offers up to 90% accuracy in detecting AI.
- False Positives: Claims a low false positive rate, about 5%.
- Warranty: No specific warranty; subscription-based.
- Features: Focuses on humanizing AI-generated content, checks against various AI detectors, aims to bypass common AI filters, useful for SEO and content marketing, simple and straightforward interface.
Pricing
- Yearly: $5/month.
- Monthly: $19.00/month.
- For Business: Custom pricing based on your needs.
Pros
Cons
8. Phrasly AI (⭐2.8)
Phrasly AI also has an AI Humanizer feature.
Its goal is to make AI text look totally human.
It claims a very high detection accuracy rate for its own scanner.
This tool is built to streamline your workflow.
It is a good choice if you write and then want to polish your content in one spot.
Key Benefits
- Accuracy: Provides around 88-90% accuracy for AI detection.
- False Positives: Reports a moderate false positive rate, around 6%.
- Warranty: Not explicitly stated; service is subscription-based.
- Features: Specializes in making AI content undetectable, offers an AI rewriter, provides readability scores, quick and easy to use, aims to help content rank better.
Pricing
- Free: $0/month.
- Unlimited: $12.99/month.
Pros
Cons
9. Grammarly (⭐2.5)
Grammarly is the tool everyone knows for fixing grammar.
Now it has an AI Detector, too.
It tells you what percentage of your writing seems AI-generated.
This is great because it works right inside Google Docs or Word.
It is perfect for getting an easy second opinion as you write.
Our Take
Want expert-level writing? Grammarly Premium’s plagiarism checker scans 16+ billion web pages, ensuring originality. Explore it today!
Key Benefits
- Accuracy: Offers strong AI detection, often around 90-92%.
- False Positives: Maintains a low false positive rate, generally under 5%.
- Warranty: Standard subscription terms apply, no specific warranty.
- Features: Integrates AI detection with grammar and spelling checks, provides plagiarism detection, offers real-time feedback, available as a browser extension, helps improve overall writing quality.
Pricing
All the plans will be billed annually.
- Free: $0/month.
- Pro: $12/month
- Enterprise: Custom pricing based on your needs.
Pros
Cons
Buyers Guide
When doing our research to find the best AI detector, we determined it using these factors:
- Accuracy and Reliability: We tested how well each of the so many ai detectors could identify ai generated text. This included checking if the AI detection tools could truly detect AI-generated content and detect AI content from multiple models. We focused on the most accurate AI detectors that use advanced algorithms and look for AI patterns in machine-written text. Our goal was to find precise AI tools that provide accurate results and the best AI detection tools against all forms of generated text. We also looked closely at the performance of the Sapling AI detector and other advanced AI models.
- Features and Capabilities: Beyond basic AI text detection, we checked the key features and advanced features. Could the AI tools offer a generous free version or free plan? We assessed Quillbot’s AI detector for its unique benefits. We also looked for plagiarism detection and writing feedback, and whether the detection tools included a browser extension or integrated with other tools, like image generators, to be a comprehensive tool and our new go-to tool. We wanted helpful features that let users easily check the same text.
- User Experience (UX): A tool must have a user-friendly interface and be easy to use. We checked whether finding the source of AI-generated text could be done in just a few clicks. We evaluated features relevant to educational institutions and professional environments, such as Google Classroom integration and the ability to check student assignments or verify academic papers. The tool needed to save time for content creation teams.
- Pricing Structure: We analyzed the different pricing plans, including the cost of the essential plan, professional plan, and premium plan. We considered the value offered by the paid plan versus the functionality of the free version.
- Ethical AI Use: Finally, we ensured the tools support the ethical use of AI models. We tested their ability to distinguish between human-written content and AI-generated content to protect human-written text. Our focus was on promoting ethical AI practices by recommending accurate AI detectors. We also looked at features that could improve the writing style of generated text.
Wrapping Up
Finding the right AI detector tools can feel tough. We know that.
We reviewed the top choices so you don’t have to guess.
Tools like Copyleaks offer strong AI content detection.
Others give you more advanced tools for rewriting.
The best choice really depends on what you need it for.
We tested these tools deeply to give you honest advice.
Trust our research. Pick one of these alternatives today.
You will get more accurate results and save a lot of time.
Frequently Asked Questions
Which GPTZero alternative is the most accurate?
The most accurate alternative is Copyleaks. It uses advanced technology to detect all forms of AI-generated text. It is very good at spotting mixed or edited content.
Do these AI detectors also check for plagiarism?
Yes, many of the top options include plagiarism checking. Originality AI and Quetext are known for their dual features. This saves you time and effort.
Can I use a GPTZero alternative for free?
Absolutely. Tools like Grammarly and QuillBot offer a good free plan for basic detection. For more scans or advanced features, you will need a paid plan.
Are these tools good for teachers and students?
Yes, tools like Winston AI are built for educational institutions. They help teachers easily check student assignments for AI-generated content.
How do I choose the best AI detector for my needs?
Consider what you mainly write. If you need speed, use QuillBot. If you need deep reports for publishing, choose Originality AI or Copyleaks.
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