9 Best Originality AI Alternatives for AI Detection in 2025

by | Last updated Nov 25, 2025

Best Overall
GPTZero
4.8
  • Writing Report
  • Fast API
  • Canvas Integrations
  • Microsoft Add-On
  • Plagiarism Checker
  • Free Plan Available
  • Paid Plans from $8.33
Best Value
Copyleaks logo
4.5
  • AI, plagiarism check
  • 30+ languages
  • 99% accuracy
  • AI Logic insights
  • API, LMS integration
  • Free Trial Available
  • Paid Plans from $13.99
Most Featured
QuillBot
4.0
  • The Paraphraser
  • Grammar Checker
  • Summarizer
  • Co-Writer
  • Quillbot Keyboard
  • Free plan available
  • Paid Plans from $4.17
Originality AI alternatives

Are you worried about content being flagged as AI-written?

Maybe Originality AI is not the right fit for you.

It is hard to find a tool that is both accurate & affordable.

Getting false positives or paying too much for checks can be frustrating.

You need assurance that your content is clean.

Stop guessing! We have found the top 9 best Originality AI alternatives for 2025.

These tools are fast, accurate, and cost-effective.

Read on to discover the perfect AI detection solution!

What are the Best Originality AI Alternatives?

It is tough to pick the right AI detector.

You want ai tools that works well. You also want a good price.

Do not waste time testing every tool yourself to see if it has an accurate detector.

We did the hard work for you.

Here is a list of the top 9 best Originality AI alternatives.

We ranked them by how well they work. Use this list to find the best tool for your needs today.

1. GPTZero (⭐️4.8)

GPTZero is a strong choice for checking if text is AI-written.

It is like a super smart detective. Teachers and students often trust this tool.

It can check for text from models like ChatGPT and Gemini.

GPTZero gives you a clear percentage score.

It even shows you which parts of the writing look like AI.

This makes it easy to know what to fix.

GPTZero Introduction

Our Take

GPTZero

Ready to see if GPTZero really works? We tested it on 100 samples. See the results for yourself. Click now!

Key Benefits

  • Accuracy: Offers 99% accuracy for AI detection.
  • False Positives: Claims a very low false positive rate (less than 1%).
  • Warranty: Comes with a 30-day money-back guarantee.
  • Features: Focuses on perplexity and burstiness, user-friendly interface, supports multiple file uploads, offers batch processing for many documents, integrates with learning platforms.

Pricing

All the plans will be billed annually.

  • Free: $0/month.
  • Essential: $8.33/month.
  • Premium: $12.99/month.
  • Professional: $24.99/month.
GPTZero Pricing

Pros

  • Highly accurate.
  • User-friendly interface.
  • Comprehensive features.
  • Constant updates.
  • Supports educators.

Cons

  • Paid plans are needed.
  • Limited language support
  • Potential false negatives.
  • Relies on technology.

2. Copyleaks (⭐️4.5)

Copyleaks is a strong checker. It is good for people who make content and for schools.

This tool can look for AI content and copied words at the same time.

You paste your writing and it quickly tells you what it finds.

It works in many languages, which is very helpful.

Copyleaks wants to keep all content real and honest.

Copyleaks

Our Take

Copyleaks

The rating is high because of its strong accuracy claims (over 99%) and its low false positive rate (only 0.2%). The combination of AI and plagiarism detection in one tool is also a big plus. It loses points mainly due to the premium price tag.

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.
Youtube Video

Pricing

  • Personal: $13.99/month.
  • Pro: $74.99/month.
Copyleaks

Pros

  • High accuracy, over 99% claimed.
  • Checks AI and plagiarism together.
  • Supports detection in 30+ languages.
  • Very low 0.2% false positive rate.

Cons

  • Premium pricing can be costly.
  • Accuracy drops for edited AI text.
  • The free version is very limited.

3. QuillBot (⭐️4.Quillbot)

You might know QuillBot as a paraphrasing tool.

But it also has an AI detector. The detector looks for patterns typical of AI writing.

It gives you a score and highlights the sentences that seem AI-generated.

QuillBot is useful because it offers other writing help, too.

It is a good option if you need a mix of writing tools.

Quillbot Introduction

Our Take

Quillbot

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.
quillbot

Pros

  • User-friendly.
  • Versatile features.
  • Time-saving.
  • Improves writing.
  • Analysis reports.

Cons

  • Can produce awkward phrasing.
  • Free version limitations.
  • Shouldn’t be solely relied upon.
  • Cost of premium subscription.

4. Winston AI (⭐️3.8)

Winston AI is praised for its high accuracy.

It does a great job distinguishing between human and AI writing.

Many people find it very reliable.

A cool feature is that it can scan not just text but also uploaded files like PDFs and images for AI-generated content.

It gives you a clear probability score for your work.

Winston AI Introduction

Our Take

Winston AI

Over 10,000 writers trust Winston AI. Explore it today and see why it’s the go-to tool for streamlining content creation!

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.
Youtube Video

Pricing

  • Free: $0/month.
  • Essential: $10/month.
  • Advanced: $16/month.
  • Elite: $26/month.
Winston AI Pricing

Pros

  • Accurate AI Detection.
  • User-Friendly.
  • Comprehensive Analysis.
  • Versatile options.
  • Integrates with AI Tools.

Cons

  • Pricing for Advanced Features.
  • AI Detection Challenges.
  • Limited Language Support.
  • Occasional False Positives.

5. Phrasly AI (⭐️3.5)

Phrasly AI focuses on humanizing AI content.

It has a built-in AI detector. The tool claims to be highly accurate.

It gives you an overall score, plus checks for grammar and readability.

Phrasly AI is helpful if you use AI tools and want to clean up the content before publishing.

Phrasly AI Introduction

Our Take

Phrasly AI

Want to know if Phrasly AI can truly beat AI detectors? Discover if its 99.99% human content claim is real, explore it today!

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.
Youtube Video

Pricing

  • Free: $0/month.
  • Unlimited: $12.99/month.
Phrasly AI Pricing

Pros

  • Accurate AI Detection.
  • Effective AI Detection Bypass.
  • User-Friendly Interface
  • Comprehensive Analysis.
  • Versatile options.

Cons

  • Costly for Advanced Features.
  • Detection Challenges.
  • Limited Support.
  • Occasional errors.

6. Smodin (⭐️3.2)

Smodin is a tool that offers many services.

It includes an AI detector and a tool to “humanize” AI text.

It can check content in many different languages.

Smodin’s detector does a decent job on completely AI-written text.

However, its accuracy can drop when the text mixes human and AI parts.

It’s a useful, affordable option with extra features.

Smodin Introduction

Our Take

Smodin

Ready to supercharge your content creation? Over 100,000 users have already tried Smodin. Join them and see how Smodin can help you write faster and wiser!

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.
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Pricing

All the plans will be billed annually.

  • Writing: $9/month.
  • Reviewing: $15/month.
  • Ultimate: $18/month.
Smodin Pricing

Pros

  • Fast content creation.
  • Easy-to-use interface.
  • Comprehensive Analysis.
  • Affordable pricing plans.
  • Helpful AI tools.

Cons

  • Pricing for Advanced Features.
  • AI writing quality.
  • Limited free plan.
  • Accuracy of AI.

7. Undetectable (⭐️3.0)

Undetectable tries to make AI-written text sound more human.

It also has an AI detector to check content.

The goal is to make AI content pass other detectors.

Reviews show that its results can be mixed. Sometimes the rewritten text can still get flagged.

But it is an option if you need to rephrase content quickly.

Undetectable AI Introduction

Our Take

Undetectable AI

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.
Youtube Video

Pricing

  • Yearly: $5/month.
  • Monthly: $19.00/month.
  • For Business: Custom pricing based on your needs.
Undetectable AI Pricing

Pros

  • Bypasses AI detectors.
  • Improves content quality.
  • Saves time.
  • Easy to use.
  • Works with various AI writing tools.

Cons

  • Not foolproof.
  • Raises ethical concerns.
  • Can be costly.
  • Risk of over-reliance on AI.

8. Quetext (⭐️2.8)

Quetext is mostly known as a plagiarism checker.

But it also has an AI content detection feature. The tool is simple to use.

You paste your text to check it.

Quetext offers different plans, including a free one with a limited word count.

It is a good choice if your main worry is plagiarism and you need a basic AI check on the side.

Quetext Introduction

Our Take

Quetext CTA

Over 95% of users in our study found Quetext’s plagiarism detection more accurate than other tools. Ready to create content with confidence? Explore its advanced AI features!

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.
Youtube Video

Pricing

All the plans will billed annually.

  • Free: $0/month.
  • Enterprise: $11.99/month.
  • Essential: $13.99/month.
Quetext Pricing

Pros

  • Highly accurate detection.
  • Simple, easy interface.
  • Advanced AI checks.
  • Fast citation tool.
  • Detailed & clear reports.

Cons

  • Limited free features.
  • Premium Plans are costly. 
  • Slow, large files.
  • Rare false alarms.

9. Grammarly (⭐️2.5)

Grammarly is a very popular writing assistant.

It now includes an AI detector as a feature.

It is a brand many people already trust.

The detector gives a percentage indicating how AI-generated the text appears to be.

Grammarly is great if you want an AI check inside your main writing and editing tool.

But some tests show its AI detection isn’t always as strong as other dedicated tools.

Grammarly Introduction

Our Take

Grammarly CTA

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.
Grammarly Pricing

Pros

  • Catches many errors.
  • Easy to use.
  • Works everywhere.
  • Improves writing.
  • Builds confidence.

Cons

  • Can be expensive.
  • Not always perfect.
  • Can overcorrect.
  • Limited free version.

Buyers Guide

When doing our research to find the best Originality AI alternatives, we determined the rankings and evaluations using these critical factors:

  • Pricing: We looked at the free version (or free plan), free trial, and the cost of paid plans for each AI detection tool.
  • Accuracy and Features: We tested the AI detection capabilities to see how well they could detect AI-generated text and distinguish it from human-written content. This included checking for a low false-positive rate and evaluating key features such as a Chrome extension or browser extension, bulk file uploads, and integration with Google Docs.
  • Scope of Detection: We assessed whether the AI checker could detect AI-generated content from the latest AI models and how it performed across different types of content, such as academic papers and general content creation. We also looked into whether the tool offered plagiarism detection or checking alongside the AI detection feature.
  • User Experience and Reporting: We evaluated the ease of use—how simple it was to paste text and get an AI score. We checked for detailed reports, feedback on writing style and sentence structure, and whether they offered API access.
  • Tool Ecosystem: We considered whether the product was just an AI detector tool or one of the multiple detectors, or if it included plagiarism tools, an AI humanizer, or a grammar checker. We compared these against popular AI detectors and other AI detectors to ensure we found the top AI detectors.
  • Reliability: We assessed how well these AI content detectors supported academic integrity by reviewing academic papers and conducting reliable AI usage checks. The goal was to find the accurate AI detectors that are truly essential tools for anyone dealing with generative AI and the challenge of detecting AI content.
  • Negatives/Missing Elements: We noted what was missing from each AI writing tool and other tools, especially where most free tools failed to offer key features. We also looked for common problems, such as grammatical errors in their output or a lack of advanced features.
  • Support: We checked whether the companies offered support or a refund policy for their advanced tools for detecting text generated by AI models. This ensures users have support when dealing with AI-written content and need reliable detection tools.
  • Comparisons: We compared each tool to Originality AI to determine why it ranked among the nine best Originality AI alternatives and whether it was better than the best AI.

Wrapping Up

We have reviewed the nine best Originality AI alternatives.

Finding the right tool to detect AI text is very important today.

We showed you options from dedicated best AI detectors like GPTZero to multi-purpose tools like Grammarly.

The key is finding one that fits your budget and accuracy needs.

Remember, the best tool should help you protect your content.

It should clearly separate AI-generated content from human-written text.

Our guide focused on finding tools that offer solid AI detection and plagiarism checking together.

Trust our research to make your final choice easy and smart.

Pick your favorite and keep your content reliable!

Frequently Asked Questions

Is Originality AI the only choice for AI detection?

No, there are many different tools available. Our list shows that alternatives like GPTZero and Winston AI offer great accuracy and strong features.

Do these AI detectors also offer grammar and style checks?

Some detectors, like Grammarly, are primarily focused on giving writing feedback. Other specialized tools may offer this as a secondary feature alongside detection.

Can these detection tools beat major search engines?

AI detection is constantly evolving to keep up with search engines and new AI models. The most advanced tools work hard to stay ahead in identifying AI-generated content.

Are there any good free AI detectors?

Yes, many popular tools offer a free tier or a limited free plan. This allows you to test their writing feedback and accuracy before committing to a paid subscription.

How accurate are the top AI detectors?

The best AI detectors are highly accurate, but no tool is perfect. They provide an AI score to estimate the likelihood of content being AI-generated, which is helpful for content creators and academic integrity

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