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Top 10 QuillBot AI Detector Alternatives in 2025

AdminIconBypassAI
DateIcon08 Jul, 2025
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TABLE OF CONTENTS

Quick Summary

What is an AI Detector?

Why Is AI Content Detection Important in 2025?

10 Best QuillBot AI Detector Alternatives to Use in 2025

What Should You Look for in a QuillBot AI Detector Alternative?

Conclusion

FAQs

The role of AI-generated content continues to have greater applications in various industries in 2025, with tools such as QuillBot that are popular opponents for paraphrasing and rewriting, but the mechanisms for detecting AI content often end up being imprecise. This scenario has created an increase in demand for QuillBot AI Detectors alternatives that are more accurate, rich, and diversified.

In choosing the right QuillBot alternatives, whether you are a teacher trying to maintain academic integrity, a content marketer ensuring originality, or a developer working on integrating content-checking APIs. This guide will take you through the 10 best QuillBot AI Detector Alternatives, their features, limitations, and how they compare in 2025.

Quick Summary

The list of the strongest QuillBot AI Detectors alternatives in 2025 came into being, each depending on varying needs. Bypass.IO is best used for paraphrased AI content checking; AssignmentGPT.AI is academic in scope, offering scoring down to detail and citation support. Jasper AI unites content generation with built-in detection for marketers.

Winston AI is trusted at the sentence level by educators, whereas Copyleaks gives enterprise-grade detection and, hence, probably offers maximum supply. Scribbr thus aids students with AI checking, grammar, and citation.

Therefore, Frase helps SEO teams in profiling low-perplexity AI-written text; Speedwrite enables testing and refining AI-generated content; Grammarly focuses on simplicity and accuracy, making it ideal for writers and professionals checking everyday content; GPTZero remains an open and education-friendly tool.

What is an AI Detector?

An AI detector is a computer program that helps to discern whether a given piece of text has been created by a human or an AI. There are many linguistic features analyzed by the detector, such as sentence structure, redundancy, vocabulary richness, syntactic complexities, and other statistical measurement factors like perplexity and burstiness. These are terms indicating how predictable or mechanical a piece of writing appears to the detector; ordinarily, AI-created content lacks the layered nature, subtlety, and occasional contradictions recognized within human writing.

The AI detectors are resorted to, mainly for reviewing the content generated by such tools as QuillBot, ChatGPT, Jasper AI, and Speedwrite. These AI tools are able to generate readable text very efficiently, but there are some very subtle signals that an advanced algorithm can detect. Such text is then flagged by the AI detector, which may even give a probability score or highlight suspicious areas and recommend changes.

Why Is AI Content Detection Important in 2025?

In a world where generative AI can produce almost human writing, the importance of tracing content origin cannot be overstated.

Here are the reasons why detection has gained so much value recently:

Academic Integrity: Since many students use tools like QuillBot for paraphrasing AI-generated essays, the institutions need really good tools to catch any cheating.

Content Originality: If your site is filled with duplicate or AI-generated content, consider hitting SEO penalties. Detection and filtering of such content assure originality.

Barring Legal and Ethical Issues: News publishers and scientific journals should check their content sources to evade copyright or embellished narratives.

Trust and Credibility: The detection method gives assurance to the audience and the client that the content is indeed original and hasn't just been spun by a machine.

With these brought into accounting, the market today is dotted with QuillBot alternatives offering high-performance capabilities.

10 Best QuillBot AI Detector Alternatives to Use in 2025

The need to detect AI-generated writing has become important in the ever-growing world of digital content. It is true, therefore, that QuillBot is equipped with some paraphrasing tools and limited detection features, but it can't be fully depended upon to know whether a piece of content was created by AI or by a human.

Here are the 10 most trusted QuillBot AI Detector Alternatives that are seeing an uptick amongst the professional, educational, and marketing community in the year 2025.

1. BypassAI.IO

Bypass IO In the realm of modern AI detection, the Bypass AI detector, BypassAI IO, finds itself gaining favour as one of the finest tools/instruments for paraphrasing and rewriting content attempted to be generated by QuillBot.

It is recognized for checking texts that have undergone more than one layer of editing or AI-model rephrasing. So, it's common for teachers and reviewers to suspect content being "bypassed" through tools like Speedwrite or QuillBot. It is not that analytical, but it offers faster and fairly good detection of suspicious AI-generated content.

Best Features

  • It specializes in AI-generated content detection, with paraphrasing and rewriting.
  • Offers instant verdicts with binary indicators.
  • Works on both short and large texts.

Limitations

  • Lacking deep analytics or probability scores.
  • Less effective as a citation check for academics.

Use Cases

  • Teachers are checking assignments.
  • Employers are verifying applicants' writing tests.
  • Bloggers ensure content originality.

Pricing

A basic one is free to use, while several premium plans are offered according to extended needs.

2. AssignmentGPT.AI

AssignmentGPT AI AssignmentGPT.AI is a multifaceted assignment AI checker specially developed for students and academics to simultaneously detect AI authorship, grammatical mistakes, and citation errors. QuillBot, unlike our product, offers some help with rewriting and limited AI detection.

AssignmentGPT AI goes a step beyond: it provides a Probability Score for each piece of text and breaks the content into the smallest segments that could be AI-written. This makes it an ideal tool where originality is of utmost concern, such as in classrooms, university submissions, and research. The platform further suggests human-sounding rewrites to assist students in ethically revising their papers.

Best features

  • Detailed content breakdown with AI probability scoring
  • Supports PDF and DOCX uploads
  • Although the proposed rewrites are not 100% AI-generated, they may be human-like.

Limitations

  • Must register for an account.
  • Free plan: Limited access

Use cases

  • Schools and universities
  • Verification of theses and assignments
  • Student help with feedback

Pricing

  • Freemium, with affordable plans for students

3. Jasper AI

Jasper AI.webp Known mostly as a platform for content creation, Jasper AI has also incorporated detection features, making it a good option to consider over QuillBot AI. For a user who writes content using Jasper, the system allows the detection of any potential flagging by AI checker or penalization from search engines in the final output.

Its integration into content workflows with instant feedback means that it assists copywriters, marketers, and agencies set on productivity and originality alike.

Best Features

  • Detects content fined by Jasper and other tools
  • You can rewrite to improve detection results
  • Work seamlessly with SEO and brand tone

Limitations

  • More premised on generation than on detection
  • These premium-only features are quite expensive

Use Cases

  • Content marketing teams
  • Agencies drafting blogs for clients
  • In-house writers striving for originality

Pricing

  • Available from $39/month

4. Winston AI

Winston AI For reliable and precise academic violation detection, Winston AI is one of the best. The software is designed particularly for schools; one can upload documents in .docx or .pdf formats. What makes it stand out is its sentence-level segregation of content, with particular AI probability scores assigned to it.

Teachers can go through student assignments with a fine-tooth comb to identify phrases or paragraphs suspiciously similar to those possibly generated by AI tools like QuillBot. It lacks a text-box-only online interface but makes for very reliable document-based detection.

Best Features

  • A good detection accuracy against essays and research works.
  • Upload of documents for secure processing.
  • Sentence-level probability breakdowns.

Limitations

  • Non-availability of browser extensions.
  • Requiring the upload of files (not texts).

Use-Cases

  • Educators and examiners
  • Research supervisors
  • Library and learning support staff

Pricing

  • Custom enterprise prices with free trials

5. Copyleaks

Copyleaks With technology reaching sophistication by the year 2025, Copyleaks posits itself as perhaps one of the most advanced tools for plagiarism and AI detection. Taking its name from the simplified interface of QuillBot, Copyleaks offers more advanced analytics and supports multiple file types and programming languages which differ considerably from QuillBot.

Machine learning algorithms were applied in detection not just for AI-written computer programming codes but translated or altered content, helping in use cases for enterprise development, software companies, and research institutions. Furthermore, API access enables the use of the platform in custom application development, thus making it versatile for any situation.

Best Features

  • Real-time content scanning
  • Advanced API support for developers
  • Detects code scans images and supports multi-lingual analysis

Limitations

  • Complex for beginners
  • Needs training to correctly interpret scores

Use Cases

  • Big and advanced/international academic centers
  • Company training development
  • Application development through detection

Pricing

  • Starting price: $9.99 monthly

6. Scribbr

Scribbr ai detector Scribbr is equally an academic powerhouse and a student favorite for paper evaluation before submission. It is an AI detector, but it also offers grammar checking, plagiarism detection, and even manual proofing by its human editors. Scribbr works well when it comes to finding AI-written parts and sections in essays, research papers, and thesis documents.

Scribbr doesn't allow for batch uploading of documents, nor does it work on a subscription basis, allowing you to pay for a specific document at a time instead; still, for its great thoroughness and credibility, it is indeed one among the few reliable choices of QuillBot for academic use.

Best Features

  • Manual human proofreading can be added
  • Plagiarism bundled with AI checks
  • Enhances clarity in writing

Limitations

  • Must be paid for each document
  • Bulk uploading of files is not supported

Use Cases

  • University thesis submission
  • Academic journal writing
  • Master's- and PhD-level dissertations

Pricing

  • Pricing varies based on document word count, from $20 or so upwards

7. Frase

Frase Although technically an SEO and content optimization tool, Frase has AI detection capabilities to assist marketers interested in maintaining Google's favor. It helps writers detect low-perplexity areas in their texts that might be flagged by AI detectors. Typical QuillBot users often rewrite

AI-generated content for SEO, so Frase attempts to do the opposite: it can reverse-engineer content that appears formulaic and identify any parts that feel too robotic. Coupled with keyword tracking and topic research features, Frase becomes an excellent fit for professionals wanting quality, natural-sounding text.

Best Features

  • Detects low-perplexity machine-generated text
  • SEO topic optimization included
  • Highlights keyword stuffing and duplicate patterns

Limitations

  • Not primarily built for AI detection
  • Employees almost a steep learning curve for the newbie

Use Cases

  • Content writers
  • SEO professionals
  • Bloggers aiming to improve E-E-A-T (Experience, Expertise, Authoritativeness, Trustworthiness)

Pricing

  • Starts at $14.99/month

8. Speedwrite

Speedwrite Not in the classical detection sense, Speedwrite has its main say in talking about AI detection. It integrates the rearrangement of the contents, whether artificially created or genuinely human: this step is taken to trump other AI detection programs, though in doing so, it highlights passages that seem stiff or replete with constrictions.

As such, educators and reviewers take this process of running some text through Speedwrite to analyze their own detection mechanisms' performance. It represents a useful contrasting agent for the evaluation of AI-generated content that has been masked deliberately.

Best Features

  • It rewrites the text to look human-generated.
  • It identifies overused AI phrases.
  • It helps users pass through AI detection tools.

Limitations

  • It does not provide for a definitive detection score.
  • Little or no reports or analyses are offered.

Use Cases

  • Tested by writers for AI bypassing methods.
  • Students use it for editing auto-generated content.
  • Bloggers who want to humanize their writing.

Price

Free basic plan, $9.99/month for premium.

9. Grammarly

Grammarly AI Detector

As AI-written content becomes increasingly common in 2025, Grammarly’s AI Detector has become a popular tool for determining whether a human or AI writes text. Known for its grammar-checking features, Grammarly now helps users spot AI content too. The tool is simple to use and great for beginners.

Unlike other tools that may be more technical, Grammarly focuses only on checking plain text. It doesn't scan code or files, but it works well for things like school assignments, emails, and blog posts.

Best Features

  • Simple and intuitive interface
  • Seamless integration with Grammarly's writing assistant
  • Fast detection of AI-written vs. human-written content

Limitations

  • Limited to plain text (no image/code/file support)
  • No advanced analytics or detailed score breakdown

Use Cases

  • Students and teachers verifying assignments
  • Professionals checking content authenticity in emails
  • Writers and editors assessing article originality

Pricing

  • Free to use with a Grammarly account

10. GPTZero

GPTZero Standardizing the list, GPTZero is among the most transparent and commonly used AI detection tools in the educational sphere. Contrary to QuillBot's limited range of features, GPTZero analyzes a body of text by the linguistic metrics of entropy and burstiness, which help decide whether humanly written or machine-generated.

Easy to use, this program is a great choice for educational institutions and even journalists. It also provides sentence-level results, so the users can check those sentences that require editing. Ever-evolving AI notwithstanding, GPTZero will always assist users in distinguishing human creativity from machine precision.

Best Features

  • A simple interface that is free to use
  • Sentence-level AI-probability highlighting
  • Insights on burstiness and perplexity

Limitations

  • No report history
  • Less advanced in handling long documents

Use Cases

  • Teachers and Professors
  • Writers are changing their drafts
  • Content reviewers and freelancers

Pricing

  • Free plan available.
  • Paid plan starting from $10/month.

What Should You Look for in a QuillBot AI Detector Alternative?

When searching for a strong QuillBot alternative, evaluate:

  • Detection Accuracy: Can it detect the obvious and paraphrased forms of AI text?

  • Detailed Reporting: Does it provide sentence-level scores or probability metrics?

  • Plagiarism Integration: Can it check the content against anti-AI and plagiarized forms?

  • Bypass Resistance: Works regardless of rewording or spinning?

  • User Interface: Is it friendly enough, especially for nontechies?

  • Customization: Suits your use case: academic, SEO, or business?

  • Price: Are the plans fair for your needs?

  • Security: Is the product's security in place, ensuring the uploaded content is kept confidential and adheres to privacy?

Conclusion

As AI-powered text production tools continue to evolve, spaces become increasingly crucial for QuillBot AI Detector Alternatives. Be it the educational industry, marketing, publishing, or development, in 2025, this list of 10 tools will provide a considerably competent balance between detection, usability, and scale.

From the likes of Copyleaks for enterprise use, GPTZero for an educational setting, and BypassAI IO for those fighting paraphrased content, each tool has something singular to offer. So if you've been considering the best QuillBot alternatives, then this list will indeed help you start bright.

FAQs

1. Which alternatives to QuillBot AI Detectors will presumably work the best in 2025?

In 2025, Bypass.IO, AssignmentGPT.AI, Winston AI, Copyleaks, and GPTZero shall appear as strong contenders for making the list of best QuillBot AI Detection alternatives. Each dares to boast its unique features, ranging from sentence-level scoring, bypass detection, plagiarism integration, and more.

2. Can AI detectors identify content that has been paraphrased by QuillBot?

Yes, advanced detectors such as Bypass.IO and Copyleaks are constructed to bring to limelight content paraphrased through the QuillBot tool. Such detectors perform language pattern recognition and entropy analysis for the identification of unnatural rewriting or AI-altered text.

3. Are all such AI detection tools free?

Some offer a free trial or limited functionality, and some will require payment for full reports or document submission. GPTZero and Bypass.IO provide free access to the online platform.

4. What is the best QuillBot AI alternative useful to educators and schools?

For educators, Winston AI and AssignmentGPT.AI come highly recommended. They provide document-based analysis, student-friendly UIs, and highly accurate detection; hence, they are great for schools, colleges, and universities.

5. Why should I use any kind of AI detection, provided my content is indeed original?

Even if your writing is original and different from that of any other human being, the goal of these detectors is to assist in verifying its quality and adherence to platform rules while preventing inadvertent AI-style phrasing that either algorithms or academic institutions could potentially flag.