9 Best Undetectable AI Alternatives in 2025

от | Last updated Nov 28, 2025

Лучший в целом
ГПТЗеро
4.8
  • Writing Report
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  • Microsoft Add-On
  • Проверка на плагиат
  • Доступен бесплатный план
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Originality.ai
4.5
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  • Accurate AI
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QuillBot
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  • Доступен бесплатный план
  • Paid Plans from $4.17
Undetectable AI alternatives

Dealing with AI detectors is now a problem for every писатель.

You use a tool to help you write, but your work gets flagged.

It is frustrating to write something only to have a program say it is not human.

This agitation costs you time, money, and your reputation.

You need content that sounds like a person wrote it—every single time.

So, what is the solution?

We found the 9 best Undetectable AI alternatives for 2025.

This list will give you tools that beat the detectors and get you back to work.

What is the Best Undetectable AI Alternative?

It is hard to find tools that truly work.

Many AI rewriters get flagged by smart detectors.

You want content that sounds natural, not robotic.

We have done the hard work for you.

Below is a list of the 9 best undetectable AI alternatives.

These tools can help your текст pass as 100% human-written content every time.

1. GPTZero (⭐4.8)

GPTZero is a leading AI detector. Wait, what?

Yes, it mainly finds AI content. But think of it as your final quality check.

If your text passes their tough test, it is very safe.

GPTZero Introduction

Наше мнение

ГПТЗеро

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

Основные преимущества

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

Цены

Все планы будут выставляется ежегодно.

  • Бесплатно: 0 долл./месяц.
  • Существенный: 8,33 долл./месяц.
  • Премиум: 12,99 долл. США/месяц.
  • Профессиональный: $24.99/month.
GPTZero Pricing

Плюсы

  • Highly accurate.
  • Удобный интерфейс.
  • Comprehensive features.
  • Constant updates.
  • Supports educators.

Минусы

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

2. Originality AI (⭐4.5)

This tool is super strict. It is known for its high accuracy in detecting AI.

We listed it because it’s tough. AI check shows you how to make your content undetectable.

It keeps getting better at finding human-written text.

Originality AI Introduction

Наше мнение

Originality AI

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!

Основные преимущества

  • Точность: Boasts 98-100% accuracy.
  • Ложные срабатывания: Has a very low false positive rate, around 2%.
  • Гарантия: Provides a 7-day satisfaction guarantee.
  • Функции: 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.

Цены

  • Плюсы: 12,95 долл./месяц.
  • Оплата по мере использования: $30 (One time on demand pricing).
  • Предприятие: $136.58/month.
Originality AI Pricing

Плюсы

  • High accuracy rate.
  • Простой в использовании интерфейс.
  • Доступные цены.
  • Helpful Chrome extension.
  • Website scanning feature.

Минусы

  • Occasional false positives.
  • Limited language support.
  • No API access.
  • Can be slow at times.

3. QuillBot (⭐4.0)

QuillBot is great for paraphrasing.

You can use it to reword text that sounds too robotic.

This improves your content flow and breaks those predictable AI patterns.

It is a good first step to humanize your writing.

Quillbot Introduction

Наше мнение

Quillbot

Ready to transform your writing? Over 50 million users have already experienced Quillbot’s powerful paraphrasing capabilities. Explore it now!

Основные преимущества

  • Точность: Achieves around 90% accuracy for general AI detection.
  • Ложные срабатывания: Known for a reasonable false positive rate, typically under 5%.
  • Гарантия: Offers a 3-day money-back guarantee on premium plans.
  • Функции: 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.

Цены

Все планы будут выставляется ежегодно.

  • Бесплатно: 0 долл./месяц.
  • Премиум: 4,17 долл./месяц.
  • Team Plan: Индивидуальное ценообразование в соответствии с вашими потребностями.
quillbot

Плюсы

  • Удобный.
  • Versatile features.
  • Time-saving.
  • Улучшает письмо.
  • Analysis reports.

Минусы

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

4. Copyleaks (⭐3.8)

Copyleaks is a complete content integrity platform.

It checks for AI and plagiarism in many languages.

They even have a “humanizer” feature now.

This helps your AI text bypass their own strong detection system.

Copyleaks

Наше мнение

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.

Основные преимущества

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 почему the content was flagged.
  • It includes AI Image Detection and can check for source code plagiarism.
Видео на YouTube

Цены

  • Личное: $13.99/month.
  • Плюсы: $74.99/month.
Copyleaks

Плюсы

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

Минусы

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

5. Smodin (⭐3.5)

Smodin has a cool feature called AI Detection Removal.

This tool claims to rewrite AI content to make it sound human.

It uses different models to change the predictable structure of machine writing.

You can try it for free first.

Smodin Introduction

Наше мнение

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!

Основные преимущества

  • Точность: Provides around 95% accuracy for AI content.
  • Ложные срабатывания: Has a low false positive rate, typically 3-4%.
  • Гарантия: No specific warranty mentioned; relies on subscription terms.
  • Функции: Combines AI detection with plagiarism checking, supports multiple languages, offers a content rewriter tool, includes a citation generator, good for academic and research papers.
Видео на YouTube

Цены

Все планы будут выставляется ежегодно.

  • Writing: 9 долларов в месяц.
  • Reviewing: 15 долларов в месяц.
  • Окончательный: $18/month.
Smodin Pricing

Плюсы

  • Fast content creation.
  • Простой в использовании интерфейс.
  • Comprehensive Analysis.
  • Доступные тарифные планы.
  • Helpful AI tools.

Минусы

  • Pricing for Advanced Features.
  • AI writing quality.
  • Ограниченный бесплатный план.
  • Accuracy of AI.

6. Quetext (⭐3.3)

Quetext is mainly a plagiarism проверяющий.

But many undetectable tools claim they can bypass its checks.

This makes Quetext a good place to test your content’s “human” score.

If it passes, you are in a good spot.

Quetext Introduction

Наше мнение

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!

Основные преимущества

  • Точность: Delivers approximately 92% accuracy in AI detection.
  • Ложные срабатывания: Maintains a low false positive rate, around 4%.
  • Гарантия: No explicit warranty; focuses on subscription service.
  • Функции: 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.
Видео на YouTube

Цены

Все планы будут выставляется ежегодно.

  • Бесплатно: 0 долл./месяц.
  • Предприятие: $11.99/month.
  • Существенный: $13.99/month.
Quetext Pricing

Плюсы

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

Минусы

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

7. Winston (⭐3.2)

Winston is a very accurate AI detector.

Like GPTZero, it is on this list because it is a great test.

If your humanized content can trick Winston, it can probably trick most other detectors, too.

It has a high 99% accuracy rate.

Winston AI Introduction

Наше мнение

Уинстон ИИ

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

Основные преимущества

  • Точность: Claims an impressive 99.98% accuracy.
  • Ложные срабатывания: Reports a near-zero false positive rate.
  • Гарантия: Includes a 14-day refund policy.
  • Функции: 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.
Видео на YouTube

Цены

  • Бесплатно: 0 долл./месяц.
  • Существенный: 10 долларов в месяц.
  • Передовой: $16/month.
  • Elite: $26/month.
Winston AI Pricing

Плюсы

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

Минусы

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

8. Phrasly AI (⭐3.0)

Phrasly is built to turn AI writing into human-like content.

Their AI Humanizer tool focuses on eliminating robotic text.

It works by changing the writing style and sentence variety.

This helps your text pass human authenticity checks.

Phrasly AI Introduction

Наше мнение

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!

Основные преимущества

  • Точность: Provides around 88-90% accuracy for AI detection.
  • Ложные срабатывания: Reports a moderate false positive rate, around 6%.
  • Гарантия: Not explicitly stated; service is subscription-based.
  • Функции: Specializes in making AI content undetectable, offers an AI rewriter, provides readability scores, quick and easy to use, aims to help content rank better.
Видео на YouTube

Цены

  • Бесплатно: 0 долл./месяц.
  • Неограниченно: 12,99 долл. США/месяц.
Phrasly AI Pricing

Плюсы

  • Accurate AI Detection.
  • Effective AI Detection Bypass.
  • Удобный интерфейс
  • Comprehensive Analysis.
  • Versatile options.

Минусы

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

9. Grammarly (⭐2.8)

You probably использовать Grammarly already.

While it fixes grammar, its new AI Humanizer refines AI-generated text.

It makes the text clearer and more natural.

Remember, it is best to polish the text you already wrote.

Введение в грамматику

Наше мнение

Grammarly CTA

Нужен текст экспертного уровня? Grammarly Premium — инструмент проверки на плагиат, который сканирует более 16 миллиардов веб-страниц, гарантируя их уникальность. Ознакомьтесь с ним уже сегодня!

Основные преимущества

  • Точность: Обеспечивает надежное обнаружение ИИ, зачастую около 90–92%.
  • Ложные срабатывания: Поддерживает низкий уровень ложноположительных результатов, обычно менее 5%.
  • Гарантия: Действуют стандартные условия подписки, особых гарантий нет.
  • Функции: Интегрирует обнаружение ИИ с проверкой грамматики и орфографии, обеспечивает обнаружение плагиата, предлагает обратную связь в режиме реального времени, доступно как расширение для браузера, помогает улучшить общее качество письма.

Цены

Все планы будут выставляется ежегодно.

  • Бесплатно: 0 долл./месяц.
  • Плюсы: 12 долларов в месяц
  • Предприятие: Индивидуальное ценообразование в соответствии с вашими потребностями.
Цены на Grammarly

Плюсы

  • Выявляет множество ошибок.
  • Легко использовать.
  • Работает везде.
  • Улучшает письмо.
  • Укрепляет уверенность.

Минусы

  • Может быть дорого.
  • Не всегда идеально.
  • Возможна перекоррекция.
  • Ограниченная бесплатная версия.

Руководство покупателя

When researching the 9 best undetectable AI alternatives, we used these factors to provide you with the most accurate review.

We focused on what truly matters to content writers and regular users who need to humanize AI text effectively.

  • Detection Evasion Score: The most critical factor. We tested each tool against advanced AI detectors like Winston AI to see if the rewritten content could bypass AI detectors and AI content detectors. A high score here proves the tool transforms AI-generated text into human-like text that detection systems pick up as original.
  • Built-in Features: We looked for unique and advanced features beyond basic rewriting. This included a built-in AI checker or built-in AI detector, different rewriting styles, and functions for specific needs like academic essays or social media подписи.
  • Readability & Natural Flow: It’s not enough to bypass AI detection. The final text must have a natural tone and natural flow, maintaining readability and the original meaning. We checked for sentence structure variety and intelligent word choice to ensure high-quality content.
  • User Experience (UX): We evaluated the user-friendly interface, the simplicity of the input box, and how quickly the tool delivered the rewritten version. We looked at whether non-technical users could use the powerful tool easily.
  • Pricing & Access: We compared the cost of the premium plan and the unlimited plan. We also checked if they offered a useful free plan or free version, as well as any word limit restrictions across their plans.
  • ЭТОТ Возможность: Since most users create marketing copy or blog posts, we checked if the output was seo friendly content and helped avoid issues with spam filters.
  • Core Technology: We looked at the AI models used, whether they were built in AI or used a specific advanced AI to ensure they could beat the latest detection algorithms and not just older models.
  • Поддержка языков: Does the great tool support multiple languages? This is a key feature for global content creation.
  • Community & Support: Does the service offer good customer support or a clear refund policy? This matters when deciding between a paid plan and unlimited usage. We wanted to find the ultimate go-to tool that we would absolutely love.

Подведение итогов

We know the fight against AI detection tools is real.

You are trying to create good content fast.

But getting flagged for AI-generated content stops your progress.

That is why we put together this list of the 9 best undetectable AI alternatives.

We tested these Инструменты ИИ hard.

Our research found the best ways to get truly undetectable AI writing.

This guide gives you proven tools to bypass AI detectors and keep your writing human.

Now you have the best AI writing tool options for 2025.

Pick one, start writing, and see your content pass every time.

Часто задаваемые вопросы

What makes these tools better than other tools?

These are designed to specifically rewrite text using more human-like patterns. They focus on beating popular ai detectors, not just simple rephrasing like other tools do.

Many use advanced plans and algorithms to change specific words and structure. They are tested to bypass tools like GPTZero by changing the predictable writing habits of AI.

Do I need to buy advanced plans to get good results?

The basic or free plans let you rewrite text for short pieces. However, the advanced plans usually offer features to handle long content and guarantee passing popular ai detectors.

How should I adjust my writing habits when using an ai writing tool?

Do not just copy and paste. Use the ai writing tool for a first draft, then add personal thoughts and change specific words. This improves the text and passes detection.

Are there free versions of these tools?

Most of these offer a free trial or limited free version. These let you rewrite text up to a certain word count to test their ability to beat popular ai detectors before subscribing to advanced plans.

Фахим Джохардер

Фахим Джохардер

Технологический энтузиаст, предприниматель, путешественник и экспат из Медины, Саудовская Аравия.

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