12+ Best Quillbot Alternatives in 2025 (Free & Paid Options)

QuillBot is a leading AI-powered writing tool trusted by millions for its paraphrasing, grammar checking, summarizing, plagiarism detection, and AI detection capabilities.

QuillBot’s powerful suite includes tools for paraphrasing, grammar checking, plagiarism detection, and more. It integrates seamlessly with your favorite apps and websites, providing a writing assistant wherever you go. Widely recognized for its effectiveness, QuillBot is one of the top-rated extensions on Google, enabling users to write better and faster, no matter the task.

However, like any tool, it has limitations—such as a 125-word cap on free paraphrasing, occasional accuracy issues, and pricing that may not suit everyone.

Key Features of QuillBot

Pricing

• Free Plan: Basic paraphrasing (125 words), grammar, summarizer, AI detector (1,200 words)
• Monthly: $9.95/month
• Quarterly: $6.65/month (billed $19.95 every 3 months)
• Annual: $4.17/month (billed $49.95 yearly)
• Team Plans: From $3.75/month/seat (billed yearly)

Pros

• User-Friendly
• Multi-Tool Suite
• Seamless Integration

Cons

• Limited Free Features
• Occasional Inaccuracies
• Expensive Premium Plans

Why Users Look for Alternatives?

While QuillBot is widely praised for its features, many users search for alternatives due to factors like pricing, limitations on free features, or the need for more specialized tools. Some users may be seeking additional functionalities, such as AI text humanization, deep rewriting capabilities, or advanced plagiarism detection.

This guide explores the best AI rewriting tools and QuillBot competitors in 2025.

QuillBot AI Humanizer Alternatives

HumanizeAI.com AI Humanizer

HumanizeAI.com is a great option if you're looking to make AI-generated text sound more human. Its signature feature, Ultra Mode, rewrites content in a way that bypasses most major AI detectors like GPTZero and Originality AI. It’s built for academic, professional, and SEO-focused writing.

Key Features

• AI detection bypass
• Ultra & Basic humanizer modes
• Makes AI text more human
• Fast text processing
• Works for academic & SEO
• Improves readability & engagement
• Privacy-focused, no data stored
• Supports content creators & students

Pricing

• Free: 1,500 words/month, 200 words per process
• Monthly: $14 (Essential), $24 (Standard), $59 (Pro)
• Annual: $7 (Essential), $12 (Standard), $29 (Pro) per month (billed annually)

Pros

• Some tools are still in development
• Word limits apply on the free plan

Cons

• Some tools still under development
• Word limits apply on free and lower-tier plans
• Premium plans may be expensive for casual users

Undetectable AI

Undetectable AI is designed to make AI-written content undetectable—perfect for students, bloggers, or professionals looking to sound natural without getting flagged. It includes tone matching, smart job applications, and integrations via API.

Key Features

• AI detection + humanizer
• Multi-detector scan (8+ tools)
• Natural tone and structure
• Up to 10,000 characters
• Supports 50+ languages
• SEO-friendly humanized text
• Strong privacy + security
• Fast content processing

Pricing

• Pro Monthly: $19/month (20,000 words)
• Annual: $9.50/month (billed annually)
• 3-Day Free Trial
• Business Plans: Custom pricing for high-volume/API usage

Pros

• Strong bypass capability
• API available for business use

Cons

• No free plan
• Expensive for heavy users

QuillBot Alternatives (Paraphrasing & Rewriting)

HumanizeAI.com AI Writer

HumanizeAI.com stands out in this category with its full-featured AI Writer and paraphrasing tool featuring multiple rewriting modes like Standard, Academic, Fluency, Formal, Expand, Shorten, and Synonym Adjustment. It also allows users to generate entire documents with outlines and citations.

Key Features

• Full document generation
• Tone & style customization
• Real-time editing
• Built-in paraphraser (Shorten, Academic, Creative)
• Automatic citation generation
• Plagiarism, grammar, and AI detection checkers
• Human-like writing
• Ask AI: Write, continue writing, create outlines and more

Pricing

• Free: 1,500 words/month
• Essential: $14/month or $7/month billed annually
• Standard: $24/month or $12/month billed annually
• Pro: $59/month or $29/month billed annually

Pros

• User-friendly design for academic and SEO writing
• Ultra Mode for undetectable output
• Competitive pricing

Cons

• Some advanced features are still rolling out

Paperguide

Paperguide is more than just a paraphrasing and rewriting tool—it’s a full AI research assistant designed for academic writing. With features like AI-powered paper generation, citation tools, and literature reviews, it supports the entire research workflow.

You can generate full documents, get instant insights on papers, automatically cite sources, and even chat with your PDF files. Whether you’re writing a thesis or a literature review, Paperguide makes the process smoother and faster.

Key Features

• AI-powered paper discovery and search
• Literature review with custom analysis frameworks
• Reference management with folders, tags, and annotations
• PDF analysis with chat-based insights
• AI writing: Generate content, outlines, and full documents
• Automated citation management with 1,000+ styles

Pricing

• Free: 10 AI generations/day, 300 AI Writer words/day
• Starter: $12/month or $9/month billed annually
• Advanced: $20/month or $16/month billed annually (includes unlimited storage and plagiarism checks)
• Team & Institutional Plans: Custom pricing with centralized billing and priority support

Pros

• Primarily focused on academic users
• May have a learning curve for first-time users

Cons

• Mainly academic focus may not suit general content creators
• Slight learning curve for new users

Wordtune

Wordtune helps you rewrite and improve your writing with real-time suggestions and tone control. It’s especially useful for emails, blogs, and professional content. You can choose to keep your writing formal or casual, and the grammar checker works in the background.

With over 10 million users and a strong Chrome extension, Wordtune makes rewriting easier for anyone who writes daily.

Key Features

• Full document generation
• Tone & style customization
• Real-time editing
• Built-in paraphraser (Shorten, Academic, Creative)
• Automatic citation generation
• Plagiarism, grammar, and AI detection checkers
• Human-like writing

Pricing

• Free: 10 rewrites/day
• Advanced: $6.99/month billed annually
• Unlimited: $9.99/month billed annually (includes summarizations, fluency, and premium support)

Pros

• Smooth, intuitive interface
• Multiple tone and clarity options
• Great for everyday and professional writing

Cons

• Free version has limited rewrites
• Advanced features require a subscription

QuillBot Paraphrasing Alternatives

HumanizeAI.com AI Paraphrase Tool

HumanizeAI.com also offers an AI Paraphrase Tool that helps you rewrite, edit, and change the tone of your text to make it clearer and easier to understand. It’s built for students, academics, and professionals who want fast, high-quality rewriting.

Key Features

• Multiple rewriting modes: Standard, Fluency, Formal, Academic, Simple, Expand, Shorten, Synonym Adjustment
• Fast and accurate rephrasing
• Adjustable vocabulary and tone control
• Supports academic and general writing
• Strong focus on user privacy

Pricing

• Free: 1,500 words/month
• Essential: $14/month or $7/month billed annually
• Standard: $24/month or $12/month billed annually
• Pro: $59/month or $29/month billed annually

Pros

• Multiple modes: Standard, Fluency, Formal, Academic, Simple, Expand, Shorten, Synonym Adjustment
• Fast rephrasing and easy-to-use interface
• Option to adjust vocabulary
• Works well for academic and general writing
• Focus on user privacy

Cons

• Some advanced features require a paid plan
• As a newer tool, occasional bugs or improvements may be expected

Paraphraser.io

Paraphraser.io offers an advanced AI paraphrasing engine with several rewording modes including Creative, Smarter, and Shorten. It’s especially helpful for students, copywriters, teachers, and marketers who need fast, readable rewrites.

Key Features

• Multiple rewriting modes (Creative, Smarter, Shorten, etc.)
• Multilingual support (20+ languages)
• Plagiarism-free output
• Integrated grammar checker
• AI humanizer tool for natural text improvement

Pricing

• Free: Fluency & Standard mode with a 600-word limit
• Monthly: Silver ($23), Gold ($40), Diamond ($499)
• Yearly: Platinum ($165/year), Enterprise ($999/year)
• Weekly: Lite ($9), Standard ($15)

Pros

• Multilingual support (20+ languages)
• Advanced rewriting with plagiarism-free output
• Includes grammar checker and AI humanizer

Cons

• Free plan has basic functionality
• Interface includes ads in the free version

Wordvice AI

Wordvice AI is a comprehensive AI writing platform offering paraphrasing, proofreading, translating, and summarizing tools. It’s known for academic and professional tone settings with multiple paraphrasing modes.

Key Features

• Paraphrasing with Fluent and Academic modes
• Academic, Creative, and Formal tone adjustments
• Proofreading and grammar enhancement
• Translation and summarization tools
• Designed for academic and professional writing

Pricing

• Free: Basic paraphraser with Fluent and Academic modes, 500 words/submission
• Premium: $19.95/month or $9.95/month billed annually (1M words/month, advanced modes)
• Team Plan: $9.95/month per seat (billed annually)

Pros

• Supports Academic, Creative, and Formal tone adjustments
• Paraphrasing modes are tailored for specific writing styles
• Strong academic and business application

Cons

• Free plan has word count and feature limits
• No built-in citation or literature tools

QuillBot Grammar Checker Alternatives

HumanizeAI.com AI Grammar Checker

The HumanizeAI.com Grammar Checker is a free tool that helps users fix grammar mistakes, awkward phrasing, spelling, and punctuation errors. It supports over 10 languages and provides fast, accurate corrections with clear explanations to help improve writing skills.

Key Features

• Free grammar checking with no word limit
• Multi-language support (10+ languages)
• Instant spelling, punctuation, and phrasing corrections
• Integrated plagiarism checker and AI humanizer (in paid plans)
• Strong privacy and security standards

Pricing

• Free: No word limit on basic grammar checks
• Included in paid plans with additional features: Essential ($14/month), Standard ($24/month), Pro ($59/month) or lower if billed annually

Pros

• Completely free grammar checking
• Supports multiple languages
• Includes plagiarism checking and AI humanizer features
• Strong privacy and security focus

Cons

• As a newer tool, occasional bugs or improvements may be expected
• Lacks advanced style reports and deep writing analytics
• No dedicated desktop app
• Limited third-party integrations compared to Grammarly

ProWritingAid

ProWritingAid is a professional-grade grammar checker and writing assistant that offers deep analysis of your writing. With over 25 different reports including readability, sentence variety, and overused words, it’s ideal for authors, bloggers, and academics.

Key Features

• 25+ detailed writing reports (readability, overused words, sentence variety, etc.)
• Grammar, spelling, and style checker
• Rephrasing and writing improvement suggestions
• Integrations with Google Docs, MS Word, and Scrivener
• Browser extensions for real-time checks

Pricing

• Free: 500-word count limit, 2 reports/day, 10 rephrases/day
• Monthly: $30/month
• Yearly: $10/month (billed at $120/year)
• Lifetime: $399 one-time payment

Pros

• Comprehensive style and grammar feedback
• Great value with a lifetime option
• Integrates with Google Docs, MS Word, and Scrivener

Cons

• May be overwhelming for casual writers
• Desktop version could use a UI update

Ginger Software

Ginger Software offers grammar and spell checking, sentence rephrasing, and translation features. It’s especially useful for ESL writers who want real-time grammar suggestions and improved fluency.

Key Features

• Real-time grammar and spelling checks
• Sentence rephrasing and fluency improvements
• Translation support for over 60 languages
• Works across desktop, mobile, and browsers
• Personal dictionary and text-to-speech features

Pricing

• Monthly: $9.99
• Quarterly: $6.99/month (billed at $20.97)
• Annual: $4.99/month (billed at $60)
• 2-Year: $3.99/month (billed at $96)
• Teams: $4.99/month per member

Pros

• Affordable and beginner-friendly
• Strong translation and multi-language support
• Works across devices and browsers

Cons

• Limited premium features compared to other tools
• No advanced writing insights or reports

QuillBot Plagiarism Checker Alternatives

HumanizeAI.com Plagiarism Checker

HumanizeAI.com includes a Plagiarism Checker that scans documents against millions of sources to ensure content originality. It supports multiple file formats like DOC, PDF, and TXT and provides clear, downloadable reports of detected matches.

Key Features

• Scans documents against extensive online sources
• Supports DOC, PDF, TXT, and other file formats
• Generates detailed, downloadable reports with source links
• Option to exclude known sources for customized checks
• Strong focus on user privacy and data security

Pricing

• Free: Basic plagiarism checking with limits
• Included in paid plans: Essential ($14/month), Standard ($24/month), Pro ($59/month) or lower if billed annually

Pros

• Supports multiple file formats
• Detailed plagiarism reports with source links
• Option to exclude known sources for focused scanning
• Strong privacy and security standards

Cons

• Free plan has word and usage limits
• Occasional bugs may occur as the tool evolves
• Lacks full academic database access compared to premium tools
• No dedicated desktop or offline version

Copyscape

Copyscape is a reliable plagiarism detection tool widely used by web publishers and SEO professionals. It scans for duplicate content across the internet and is particularly helpful for ensuring originality in blog posts, landing pages, and articles.

Key Features

• Detects duplicate content across the web
• Offers batch search and private index scanning (Premium)
• Provides detailed matching results with source links
• No subscription required; pay-as-you-go model
• Simple, lightweight interface

Pricing

• Premium credits: $0.03 for up to 200 words
• Additional: $0.01 per 100 extra words
• Minimum $10 purchase via PayPal (credits valid for 12 months)

Pros

• Accurate web scanning
• Flexible pay-as-you-go pricing
• No subscription required

Cons

• No free tier
• Limited features beyond detection

JustDone

JustDone offers an advanced plagiarism detection tool with full-document uploads, detailed similarity reports, and support for academic writing. It’s built for students, researchers, and professionals who need reliable plagiarism checks.

Key Features

• Full-document uploads and scanning
• Detailed similarity and plagiarism reports
• Integrated AI humanizer and paraphrasing tool
• Citation generator for academic use
• Secure document handling

Pricing

• 7-day access: $2.00 trial, then $39.99/month
• Monthly: $29.99 (discounted)
• Annual: $24.99/month billed annually

Pros

• Upload and scan entire documents
• Detailed plagiarism reports
• Includes AI humanizer, citation, and paraphrasing tools

Cons

• No completely free plan
• Requires a subscription for full access

QuillBot AI Detector Alternatives

HumanizeAI.com AI Detector

The HumanizeAI.com AI Detector helps users identify whether content has been generated by AI. It offers sentence-level analysis, supports multiple languages, and includes tools to edit and humanize AI-generated text to improve detection scores.

Key Feature

• Most Accurate AI Content Detection
• Supports Major AI Models: ChatGPT, Gemini, Claude, and more
• Instant AI Content Detection
• Low False Positives, High Accuracy
• Privacy-Focused and Secure

Pricing:

• Free: Basic detection with limits
• Included in paid plans: Essential ($14/month), Standard ($24/month), Pro ($59/month) or lower if billed annually

Pros

• Detects AI-generated content at the sentence level
• Allows users to edit and humanize flagged content
• Multilingual detection support
• Strong privacy and security policies

Cons

• Free plan has word and usage limits
• May not detect very subtle AI content compared to dedicated tools
• Occasional bugs as the tool continues to evolve
• Lacks advanced team reporting features found in enterprise detectors

GPTZero

GPTZero is one of the most popular AI detectors for educators, students, and institutions. It offers sentence-level analysis, advanced AI scan features, and file uploads, helping users determine if a text was written by AI.

Key Features

• Basic Scan - Quick AI detection
• Advanced Scan - In-depth AI analysis
• AI Vocabulary - Identifies AI-specific words
• AI Plagiarism - Checks for plagiarism alongside AI detection
• Writing Feedback - Instant text feedback
• Essay Grader - Grading based on criteria
• Search Sources - Find relevant sources

Pricing

• Monthly: $14.99 (Essential), $23.99 (Premium), $45.99 (Professional)
• Annual: $8.33 (Essential), $12.99 (Premium), $24.99 (Professional) per month billed annually

Pros

• Sentence-level highlighting and advanced scan
• Chrome extension and plagiarism checker included
• Great for academic and enterprise use

Cons

• Free version not available
• Word limits apply to all plans

Originality.ai

Originality.ai is a robust tool used by publishers and academic teams. It offers AI detection, plagiarism checks, readability analysis, and team features—all through a credit-based system.

Key Features

• 99% AI Detection Accuracy
• Supports Major AI Models: ChatGPT, GPT-4o, Gemini, Claude, Llama
• Patented AI Detection Technology
• Plagiarism, Readability, Fact & Grammar Checkers
• Chrome Extension for Instant Detection
• Enterprise-Ready: API, Team Management, Data Privacy
• Multi-Language Support: 15 languages available

Pricing

• Pay-as-you-go: $30 one-time for 3,000 credits (1 credit = 100 words)
• Monthly: $14.95 (Pro), $179 (Enterprise)
• Annual: $12.95/month (Pro), $136.58/month (Enterprise)

Pros

• Combines AI detection, plagiarism check, and SEO tools
• API and full-site scan support
• Team tagging, scan history, and report sharing

Cons:

• No free plan
• Credits expire monthly unless using a one-time plan

QuillBot Summarizer Alternatives

SMMRY

SMMRY helps you transform long documents into concise, insightful summaries quickly. Whether it's articles, books, or even podcasts, our AI tool makes it easier to grasp essential points in a fraction of the time..

Key Features

• Summarizes articles, books, websites, PDFs, and more
• Custom summary length and format options (bullet points, one-liners)
• 20+ languages supported
• AI-powered for accuracy and clarity
• Secure with AES-256 encryption
• Export summaries in PDF, Word, or text formats

Pricing

• Free: 10 summaries/month, basic features
• Essential: $7/month (billed annually), 20 summaries/day
• Advanced: $13/month (billed annually), unlimited summaries/day, YouTube & podcast summaries
• Pro: $16/month (billed annually), all features unlocked, full access to mind maps

Pros

• Simple to use with minimal setup
• Supports summarizing articles, books, and videos
• Budget-friendly paid plans

Cons

• Limited free usage
• Few customization options for summaries

Resoomer

Resoomer is a powerful AI summary tool tailored for students, professionals, and researchers. It goes beyond text and can summarize YouTube videos, scanned documents, and PDFs.

Key Features

• 1-Click Summarization: Automatic, manual, and optimized modes.
• Text Analysis: Identify key ideas and arguments quickly.
• Browser Extensions: Summarize online articles instantly.
• Supports Multiple Formats: Works with articles, books, PDFs, and more.
• Fast & Efficient: Summarizes content in seconds for better productivity.

Pricing

• Free: 15,000 characters per summary
• Pro: €24/month (includes all AI tools, summarizer, paraphraser, grammar checker, and translator)

Pros:

• Supports image-based and video summarization
• Multilingual capabilities and grammar checking
• Full document download in DOC/PDF format

Cons

• Free version has limited output quality
• Interface may be overwhelming for some users

Best QuillBot Alternatives: Features, Pricing & Use Cases

How to Choose the Best Quillbot Alternative

The right alternative depends on your specific needs:

• For humanizing AI text, HumanizeAI.com offers unique capabilities with Ultra Mode and multiple rewriting tools.
• For academic research and writing, Paperguide provides full document creation and citation management.
• For paraphrasing and rewriting, tools like HumanizeAI.com and Wordtune are intuitive and affordable Quillbot competitors.
• For advanced grammar checking, ProWritingAid offers deep feedback while HumanizeAI.com and Ginger Software deliver user-friendly grammar correction.
• For plagiarism detection, Copyscape is excellent for web content, while JustDone is better for full academic documents.
• For AI content detection, GPTZero and Originality.ai are among the best AI rewriting tools to verify authenticity.

Focus on what matters most—rewriting, grammar, plagiarism, detection, or a combination—and choose the tool that fits your workflow and budget.

Conclusion

QuillBot remains one of the most popular paraphrasing tools like Quillbot, but it’s far from the only option. If you want an all-in-one solution, HumanizeAI.com stands out as a full-featured AI writing platform. It combines AI humanizing, paraphrasing, document generation, grammar checking, plagiarism detection, and AI detection in a single tool—making it a powerful alternative for students, academics, professionals, and content creators.

For academic research, Paperguide is a top choice. Writers focused on grammar or quick paraphrasing will benefit from ProWritingAid, Wordtune, and Paraphraser.io. For AI detection and SEO content validation, GPTZero and Originality.ai remain trusted options. Whether you are looking for free Quillbot alternatives or premium solutions, this guide has covered the best AI rewriting tools to fit your needs.

FAQs

Is there a better AI tool than QuillBot?

Yes. HumanizeAI.com offers better results for humanizing AI text. Paperguide excels in academic research. ProWritingAid provides deeper grammar and style corrections.

Can ChatGPT replace QuillBot for paraphrasing?

ChatGPT can paraphrase text, but dedicated tools like HumanizeAI.com, Wordtune, or Paraphraser.io deliver more consistent and style-controlled results.

Which alternative is best for SEO content rewriting?

Originality.ai is widely used by SEO professionals thanks to its AI detection, plagiarism checking, and readability features.

Are there any Quillbot alternatives with a lifetime deal?

ProWritingAid offers a lifetime plan. Some other tools like Paraphraser.io occasionally run high one-time purchase promotions. It’s best to check official websites for current offers.