In the evolving landscape of AI writing assistants, QuillBot has cemented its reputation as a leading tool, especially for rephrasing, grammar checks, and summarizing. But in 2025, with new features and competitors entering the market, a critical question remains: is QuillBot still the best AI paraphrasing tool and grammar checker for students and writers?
This comprehensive QuillBot review will dive into its core features, updated pricing, pros, and cons, and compare it against major players like Grammarly and Writesonic to help you decide if QuillBot is the right tool for you.
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Verdict at a Glance
QuillBot remains an exceptional tool for its core function: paraphrasing. It is the best AI paraphrasing tool on the market due to its versatility and ease of use. It is highly recommended for students, academic writers, and content creators who need to quickly rewrite text without losing meaning. While its grammar checker is good, it isn’t as robust as Grammarly’s, and its plagiarism tool has limitations.
Our Score: 8/10
QuillBot’s Strengths and Weaknesses
Pros
- Highly effective paraphrasing: With multiple modes and a synonym slider, it offers unparalleled control over rephrasing text.
- Academic tools: The built-in citation generator and summarizer are invaluable for academic writing tools.
- Affordable pricing: The annual premium plan is one of the most budget-friendly options among AI writing tools 2025.
- Strong integrations: Seamlessly works with Google Docs, Microsoft Word, and popular web browsers.
- AI humanizer: A useful feature for refining AI-generated text to sound more natural.
Cons
- Limited free plan: The 125-word limit for paraphrasing is a significant restriction for free users.
- Grammar checker accuracy: The grammar checker is good for basic errors but can be less precise than dedicated alternatives.
- Plagiarism checker limitations: The plagiarism checker is not as robust or reliable as professional tools like Turnitin and has a limited word count for premium users.
Standout Features
1. Paraphrasing Tool with 7 Modes
This is the feature QuillBot is most known for. It offers seven unique modes—Standard, Fluency, Formal, Creative, Academic, Shorten, and Expand—to rephrase your text. The synonym slider allows you to control the level of change, from a subtle rewrite to a complete rephrasing. This is a powerful feature for students rephrasing quotes or bloggers rewriting old content for SEO.
2. Grammar Checker
QuillBot’s grammar checker provides a reliable solution for correcting spelling, punctuation, and basic grammatical errors. While it may not offer the same depth of stylistic feedback as Grammarly, it is more than sufficient for most writing tasks and is a strong, affordable option for a grammar checker for students.
3. Summarizer and Citation Generator
These tools are a massive time-saver, especially for academic writers and researchers. The summarizer can condense lengthy articles or papers into key sentences or bullet points. The citation generator, which supports APA, MLA, and Chicago styles, simplifies the process of creating a bibliography.
4. QuillBot Flow and AI Humanizer
QuillBot Flow is a premium feature that integrates all of QuillBot’s tools into a single, distraction-free workspace. The AI Humanizer, another premium tool, is designed to refine AI-generated content to sound more authentic and natural, a useful function for creators looking to bypass AI detection software.
Pricing Plans (2025)
QuillBot offers a free plan with basic features and a premium plan that unlocks the full suite of tools. For those wondering if QuillBot Premium is worth it, the value is clear for heavy users.
| Plan | Price | Key Features |
| Free | $0 | 125-word paraphrasing limit, 2 writing modes |
| Premium (Monthly) | $19.95/month | Unlimited paraphrasing, all 7 modes, plagiarism checker, QuillBot Flow |
| Premium (Annual) | $99.95/year ($8.33/month) | All premium features, best value |
All premium plans come with a 3-day money-back guarantee.
QuillBot vs. Competitors
When considering QuillBot, it’s helpful to understand its place among other popular AI writing tools 2025. Here is a comparison of QuillBot vs Grammarly and Writesonic.
| Feature | QuillBot | Grammarly | Writesonic |
| Primary Strength | Paraphrasing & Academic tools | Grammar & Style Correction | AI Content Generation |
| Grammar Accuracy | Good | Excellent | Basic |
| Paraphrasing | Excellent | Limited | Good |
| Content Generation | No (Refines only) | No (Refines only) | Yes (80+ templates) |
| Best For | Academic writing, rewriting | Proofreading, style editing | Full blog posts & marketing copy |
| Price (annual) | $8.33/month | $12/month (Premium) | $13+/month |
Verdict: The QuillBot vs Grammarly comparison is simple: if you need to rewrite or rephrase text, QuillBot is the superior and more affordable option. If your primary need is deep grammar and style editing, Grammarly is the better choice. Writesonic, by contrast, is a different kind of tool, focusing on generating original content from scratch rather than refining existing text.
Final Verdict: Is QuillBot Premium Worth It in 2025?
For the vast majority of its users—students, SEO writers, and professionals who need to polish their text—QuillBot offers exceptional value. It remains the best AI paraphrasing tool on the market, with an affordable premium plan that unlocks a suite of powerful features. While it may not replace a dedicated grammar checker like Grammarly or a content generator like Writesonic, its unique combination of tools makes it a valuable and often indispensable complement to any writer’s toolkit.
Frequently Asked Questions
What is QuillBot best used for?
QuillBot is best used for paraphrasing text, summarizing long articles, and generating citations in various formats, making it a favorite among academic writing tools.
Is QuillBot free?
Yes, it offers a free plan with a 125-word paraphrasing limit and basic grammar corrections.
How does QuillBot compare to Grammarly?
Grammarly is stronger for deep grammar and style suggestions, while QuillBot is superior for paraphrasing and offers a better value for the price.
Can QuillBot detect AI-generated content?
No, QuillBot does not detect AI-written content. However, it does offer an AI humanizer tool to help make AI-generated text sound more natural.
Is QuillBot good for SEO?
Yes, it is excellent for SEO because it can help you rewrite and rephrase old content to avoid duplication and improve readability.
Does QuillBot support multiple languages?
Yes, QuillBot supports paraphrasing and other functions in a wide variety of languages.
Is the plagiarism checker reliable?
The plagiarism checker has limitations and a word count limit, making it a helpful but not foolproof tool compared to dedicated services.
Disclaimer: This review is for informational purposes only and does not constitute financial, legal, or professional advice.
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