
QuillBot
FreemiumAI-powered writing tool for paraphrasing, grammar checking, and more to improve writing.
- Paraphrasing
- Grammar check
- Plagiarism detection
Both the detectors and the humanizers — tested against real GPT-5, Claude, and Gemini output.
The cat-and-mouse between AI detection and AI humanization evolves week by week. This collection benchmarks both sides — detectors scored on false-positive rate against human writers and recall on frontier models, and humanizers scored on detection-bypass rate plus preserved meaning. Use the picks for plagiarism policy enforcement, academic integrity, or legitimate content post-processing.
Jump to compare tools or explore the full ai detection anti detection category on the directory.
Scanner-friendly
Pricing shown as tier + amount only (long copy from vendor HTML is hidden here). Open each profile for full tiers and feature lists.
| Tool | Free tier | Pricing | Rating | Traffic / mo | Profile |
|---|---|---|---|---|---|
| QuillBot | Yes | Premium $8.33 /month Free $0 /month | 5.0 | 49.6M | View |
| ZeroGPT | No | PRO 7.99/month PRO Enjoy a Pro Experience with… MAX 18.99/month MAX Enjoy a Pro Experience wit… Beginner (API) $0.034 VIP (API) $0.069 +2 more on profile | 5.0 | 29.1M | View |
| GPTZero | No | Premium $12.99 /month Professional $24.99 /month Essential $8.33 /month | 5.0 | 18.5M | View |
| Scribbr | No | — | 5.0 | 9.9M | View |
| Undetectable AI | No | — | 5.0 | 4.6M | View |
| Branded | No | — | 5.0 | 4.5M | View |
| hCaptcha | Yes | Basic (Free) $0 Pro $139 /month Enterprise TalktoSales Enterprise Best-in-class fraud… | 5.0 | 4.4M | View |
| StealthWriter | Yes | Free $0 Premium $50 /month Standard $35 /month Basic $20 /month | 5.0 | 4.2M | View |
| AI Humanize | No | Basic Plan (Monthly) $15 /month Standard Plan (Yearly) $10 /month Pro Plan (Monthly) $40 /month Basic Plan (Yearly) $5 /month +2 more on profile | 5.0 | 3.7M | View |
| Copyleaks | No | AI Detector $7.99 /month AI + Plagiarism Detection $13.99 /month Enterprise & LMS Contactus Enterprise & LMS For a plan tail… Plagiarism Checker $8.99 /month | 5.0 | 3.6M | View |
| Originality.ai | No | Enterprise $136.58 /month Pro $12.95 /month Pay as you go $30 /credit | 5.0 | 2.7M | View |
| Aura | No | Individual $12 /month Couple $22 /month Family $32 /month Kids $10 /month | 5.0 | 2.5M | View |
| Decopy AI | No | — | 5.0 | 2.4M | View |
| Uhmegle | No | — | 5.0 | 2.1M | View |
| Study Fetch | No | — | 5.0 | 1.9M | View |
| Bark | No | Bark Phone Starter Plan $29 /month Bark Jr $5 /year Bark Premium $14 /year Bark Phone Advanced Plan (4GB Data) $59 /month +5 more on profile | 5.0 | 1.8M | View |
Rows reflect this page’s result set. Sorting is a view aid only — it does not change editorial order in JSON-LD lists.
Decision shortcuts
QuillBot currently leads this shortlist on combined traffic and editorial rating — use it as your first live test against real work samples.
Primary pick
QuillBot
ZeroGPT is the best second stop when you need a different UX, integration path, or price structure without leaving this niche.
Primary pick
ZeroGPT
Scan the shortlist

AI-powered writing tool for paraphrasing, grammar checking, and more to improve writing.

ZeroGPT is an AI content detector and offers various writing tools.

AI detector for identifying text generated by AI models like ChatGPT.

Scribbr offers proofreading, plagiarism checking, citation generation, and academic resources for students.

Transforms AI content into undetectable, human-like writing.

Branded connects businesses with research participants, offering AI-driven insights and custom audience targeting.

AI security platform stopping bots and human abuse with a privacy focus.

StealthWriter humanizes AI-generated content to bypass AI detection and ensure content integrity.

AI Humanize converts AI text to human-like writing, bypassing AI detection.

AI-powered platform for plagiarism and AI content detection.

Originality.ai: AI & plagiarism checker for content integrity.

All-in-one digital safety platform for identity theft and online threat protection.

AI writing tool for detection, humanization, and summarization to improve content clarity.

Uhmegle is an Omegle alternative for chatting with strangers via text or video.

AI learning platform transforming course materials into flashcards, quizzes, and notes with an AI tutor.

Parental control service with monitoring, screen time, and location sharing features.
Depth layer
Structured pros, cons, and positioning for each pick on this page — designed for scanners and AI-overview style summaries alike.
Rated 5.0/5 · ~49.6M visits/mo
QuillBot is an AI-powered writing tool designed to help users write more effectively and efficiently. It offers a suite of tools including a paraphraser, grammar checker, plagiarism checker, AI detector, summarizer, citation generator, and more. QuillBot aims to enhance writing quality, improve fluency, and boost productivity without sacrificing authenticity.
Tags: Paraphrasing, Grammar check, Plagiarism detection, AI writing assistant, Summarization, Citation generation, AI detection, AI humanizer
Rated 5.0/5 · ~29.1M visits/mo
ZeroGPT is an advanced and accurate AI content detector designed to identify text generated by ChatGPT, Google BARD, and other AI models. It highlights AI-generated sentences and provides a percentage of AI-generated content within the text. ZeroGPT also offers tools such as a plagiarism checker, paraphraser, summarizer, grammar checker, translator, word counter, AI email helper, and citation generator.
Tags: AI detector, ChatGPT detector, AI content checker, Plagiarism checker, Paraphrasing tool, Summarization tool, Grammar checker, Translation tool
Rated 5.0/5 · ~18.5M visits/mo
GPTZero is an AI detection tool designed to identify text generated by large language models such as ChatGPT, GPT-4, Gemini, Claude, and LLaMA. It offers features like sentence-level highlighting, AI vocabulary detection, plagiarism checking, and authorship verification. GPTZero aims to help educators, writers, and other professionals maintain academic integrity, ensure authenticity, and detect potential AI-generated content in various contexts.
Tags: AI detection, ChatGPT detection, Plagiarism checker, Authorship verification, Academic integrity, Content authenticity, AI content analysis
Rated 5.0/5 · ~9.9M visits/mo
Scribbr is a comprehensive platform designed to support students in achieving academic success. It offers a range of services including proofreading and editing, a plagiarism checker, a citation generator, and an extensive knowledge base. Scribbr aims to help students improve their papers, ensure originality, generate accurate citations, and enhance their academic writing skills.
Tags: Proofreading, Editing, Plagiarism Checker, Citation Generator, Academic Writing, AI Writing Tools, Grammar Checker, AI Detector
Rated 5.0/5 · ~4.6M visits/mo
Undetectable AI is a platform designed to transform AI-generated content into high-quality, human-like writing that avoids detection by AI detectors. It offers tools to check if text will be flagged as AI-generated and to humanize AI-written content, ensuring it appears 100% human and is undetectable by various AI detection tools. The platform supports multiple languages and integrates with popular AI content generators like ChatGPT, Gemini, Claude, and Llama.
Tags: AI Detector, AI Checker, AI Humanizer, AI Content Detection, AI Content Humanization, Plagiarism Checker, Content Authenticity, Text Analysis
Rated 5.0/5 · ~4.5M visits/mo
Branded is a platform that connects businesses with research participants for qualitative and quantitative research. It offers access to niche audiences, AI-driven quality insights, and automated API access for custom audience targeting. Branded helps businesses make critical decisions backed by real consumer data by capturing attitudes and emotions for a 360-degree view of their consumers. They use AI to verify participant responses, ensuring high data quality and removing poor actors. Branded also provides strategic recruiting from over 100 consumer segments and industries, creating a comfortable environment for research participants to deliver authentic responses.
Tags: Market research, Consumer insights, Audience targeting, Data quality, AI, Surveys, Qualitative research, Quantitative research
Rated 5.0/5 · ~4.4M visits/mo
hCaptcha is an enterprise-grade AI security platform focused on privacy, designed to stop bots and human abuse. It offers a next-generation alternative to reCAPTCHA v2, v3, or Enterprise at a better value. Used by millions, hCaptcha provides bot detection, fraud protection, and account defense, including private learning AI for zero PII abuse detection. It protects various industries from bad bots, human abuse, account takeover, credential stuffing, purchase fraud, and more, while ensuring compliance with GDPR, CCPA, and HIPAA.
Tags: Bot detection, Fraud protection, Account security, CAPTCHA alternative, AI security, Privacy, GDPR compliance, CCPA compliance
Rated 5.0/5 · ~4.2M visits/mo
Stealthwriter is an SEO tool that converts AI-generated text into undetectable, human-like content. It helps users bypass AI detection tools like GPTzero and Turnitin, ensuring content isn't censored, blocked, or banned. StealthWriter offers features to humanize AI content, bypass AI detection, and achieve a 100% human score.
Tags: AI humanizer, AI detection bypass, Content rewriter, Paraphraser, SEO tool, Plagiarism checker bypass
Rated 5.0/5 · ~3.7M visits/mo
AI Humanize is a tool that transforms AI-generated text into human-like writing, helping users avoid AI detection. It offers features like pasting AI text, checking AI content with 'AI Detect', and 'Humanize' to create undetectable content. It aims to enhance readability, relatability, and originality, ensuring the text appears 100% human-written.
Tags: AI humanizer, AI to human converter, AI detection bypass, Content humanization, Text rewriting, AI content, Humanize AI text
Rated 5.0/5 · ~3.6M visits/mo
Copyleaks is an AI-powered platform designed to detect plagiarism, AI-generated content, and paraphrasing across multiple languages. It helps verify text authenticity and ownership, ensuring academic integrity, ethical AI use, and protection of intellectual property. Copyleaks offers solutions for academic institutions, enterprises, and individuals to maintain content originality and transparency.
Tags: Plagiarism Detection, AI Content Detection, Academic Integrity, Intellectual Property Protection, AI Governance, Writing Assistance, Text Authenticity
Rated 5.0/5 · ~2.7M visits/mo
Originality.ai provides a complete toolset (AI checker, Plagiarism Checker, Fact Checker, and Readability Checker) that helps Website Owners, Content Marketers, Writers, Publishers, and any Copy Editor hit Publish with Integrity. It combines AI detection and plagiarism checking to determine the originality of a piece of content. It is a modern plagiarism checker built for serious web publishers and an accurate AI Detector capable of detecting GPT-3 and ChatGPT-generated content.
Tags: AI Detection, Plagiarism Checker, Fact Checker, Readability Checker, Content Quality, Originality, AI Content, Content Marketing
Rated 5.0/5 · ~2.5M visits/mo
Aura is an intelligent digital safety platform designed to protect individuals and families from identity theft, scams, and online threats. It offers all-in-one protection with features like credit monitoring, identity theft protection, VPN, antivirus, password manager, parental controls, and more. Aura uses AI to proactively monitor online activity, alert users to vulnerabilities, and provide guidance on staying safe online. It also includes identity theft insurance to cover eligible losses.
Tags: Identity Theft Protection, Credit Monitoring, Online Safety, VPN, Antivirus, Password Manager, Parental Controls, Cyberbullying Protection
Rated 5.0/5 · ~2.4M visits/mo
Decopy AI is an advanced AI writing tool designed to improve academic writing. It offers features such as AI detection, humanization, and summarization to make content clearer and easier to understand. It helps users detect AI-generated content, refine and optimize writing for a natural feel, summarize lengthy documents, and ensure originality.
Tags: AI writing assistant, AI content detection, AI humanization, AI summarization, AI paraphrasing, AI grammar check, Academic writing, Content creation
Rated 5.0/5 · ~2.1M visits/mo
Uhmegle is an Omegle alternative that allows users to chat with strangers. It offers free, anonymous, and moderated video and text chat. Users can connect with others based on shared interests, making it easier to find relevant conversations and new friends.
Tags: Omegle alternative, Chat with strangers, Anonymous chat, Video chat, Text chat, Online friends, Social networking
Rated 5.0/5 · ~1.9M visits/mo
Study Fetch is an AI learning platform that transforms various course materials like PowerPoints, lectures, class notes, and study guides into AI-powered study tools. It offers features such as AI flashcards, quizzes, notes generation, and an AI tutor named Spark.e. The platform aims to make learning faster and more effective by providing personalized feedback, tracking progress, and generating focused study tools in seconds from uploaded content.
Tags: AI learning platform, Ed-tech, Study tools, AI tutor, Flashcards, Quizzes, Notes generation, Essay grading
Rated 5.0/5 · ~1.8M visits/mo
Bark is a parental control service designed to help protect children online and in real life. It offers monitoring, screen time controls, website and app blocking, and location sharing. Bark provides various products, including the Bark Phone, Bark Premium, Bark Jr, and Bark Home, each tailored to different needs and devices. The service uses AI-powered safety alerts to scan texts, social media, images, videos, and audio for threats like cyberbullying and pornography. Bark also offers personalized insights and expert recommendations to help parents handle challenging moments.
Tags: Parental control, Monitoring, Screen time, Location tracking, Cyberbullying, Online safety, App blocking, Website blocking
Power users
High-level signals from our directory record. “Tag” columns are substring matches on vendor tags — confirm on each tool page before relying on them for procurement.
| Tool | Free tier | Rating | Traffic/mo | Profile |
|---|---|---|---|---|
| QuillBot | Yes | 5.0 | 49.6M | Open |
| ZeroGPT | No | 5.0 | 29.1M | Open |
| GPTZero | No | 5.0 | 18.5M | Open |
| Scribbr | No | 5.0 | 9.9M | Open |
| Undetectable AI | No | 5.0 | 4.6M | Open |
| Branded | No | 5.0 | 4.5M | Open |
| hCaptcha | Yes | 5.0 | 4.4M | Open |
| StealthWriter | Yes | 5.0 | 4.2M | Open |
| AI Humanize | No | 5.0 | 3.7M | Open |
| Copyleaks | No | 5.0 | 3.6M | Open |
| Originality.ai | No | 5.0 | 2.7M | Open |
| Aura | No | 5.0 | 2.5M | Open |
| Decopy AI | No | 5.0 | 2.4M | Open |
| Uhmegle | No | 5.0 | 2.1M | Open |
| Study Fetch | No | 5.0 | 1.9M | Open |
| Bark | No | 5.0 | 1.8M | Open |
Pros: You get a density of ai detection anti detection tools that already passed category matching and ranking signals, which cuts research time versus open-ended search. About 3 entry/entries advertise free access in our data — useful for pilots.
Cons: Any directory view lags vendor roadmaps. Pricing chips and tags are not legal commitments — enterprise buyers should still run security review and contract redlines off each official site.
Below is a roll-up of how vendors in this ai detection anti detection cluster label themselves in our directory. Treat it as a scanner-friendly shortcut — not a substitute for checkout-page verification.
Chips summarize tier + price from each record (vendor long copy omitted here). Currency and terms can change without notice.
The cat-and-mouse between AI detection and AI humanization evolves week by week.
We re-check pricing labels and positioning quarterly (or sooner when a vendor ships a materially new SKU). Tools must remain discoverable under this collection’s category scope.
We do not accept payment to appear in a curated ranking slot; sponsored inventory, if any on the wider site, is labeled separately from editorial ordering on this page.
You need repeatable quality, clear upgrade paths, and pricing that scales with seats or usage. Prioritize tools with strong ratings and transparent tiers in the matrix below.
You will care about auditability: capture screenshots of pricing pages, confirm SSO or data residency on vendor sites, and shortlist 2 finalists from the comparison table.
Start from the free-tier column, validate output on your own assets, then upgrade only when a tool clears a hard ROI bar.
Not an exact fit for “AI Detectors & Humanizer Tools — Both Sides of 2026”? Browse adjacent hubs below or jump to the full category — often the best “alternative” is a neighboring workflow, not a me-too clone.
Browse the complete ai detection anti detection category to find adjacent products that did not fit this editorial framing.
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