QuillBot Review 2026 — Is It Worth It? An Honest Look

If you've ever stared at a sentence you've written and thought "this is technically correct, but it sounds terrible" — QuillBot was built for you. The AI paraphrasing and writing assistant has been around since 2017, but it's grown substantially in both features and reputation. This QuillBot review for 2026 will give you a straight answer: is it still worth paying for in a market now flooded with AI writing tools?

TL;DR: QuillBot is one of the most capable, affordable paraphrasing and grammar tools available. For students, non-native English speakers, and working writers who need quick rewrites and clean grammar checks, it delivers solid value. It's not a full AI content generator, and power users creating long-form content may hit its ceiling — but for what it does, it does very well.

Quick Overview

What Is QuillBot?

QuillBot was founded in 2017 by three University of Illinois graduates — Rohan Gupta, David Silin, and Anil Jason. It started as a simple paraphrasing tool and has since evolved into a multi-feature writing assistant used by over 35 million people worldwide.

In 2021, the company was acquired by Course Hero, an education platform — a move that aligned well with QuillBot's dominant user base of students and academics. That backing has helped fund ongoing development, and you can see it in the product's steady improvement over recent years.

What makes QuillBot's market position interesting is its focus. Unlike Jasper or Writesonic, which aim to generate new content from scratch, QuillBot leans into refinement. It's for people who already have words on a page and want them to be better — clearer, more fluent, more original, or more concise. That niche focus means it tends to do its core jobs better than general-purpose AI tools that try to do everything.

Key Features

Paraphraser

This is QuillBot's flagship feature, and it's genuinely impressive. You paste in text (up to a set word limit depending on your plan), choose a writing mode, and QuillBot rewrites it while preserving the core meaning.

There are 8 paraphrasing modes available:

• Standard — balanced, default rewrites
• Fluency — prioritizes grammatically clean output
• Formal — useful for business or academic writing
• Simple — plain language, great for accessibility
• Creative — bolder word choices and sentence restructuring
• Expand — adds detail and length
• Shorten — trims text down
• Custom — create your own tone/style (Premium only)

The synonym slider lets you control how aggressively QuillBot changes vocabulary. Turn it up, you get more creative rewrites; turn it down, you preserve more of the original phrasing. This level of control is something most competitors don't offer.

Free users get access to Standard and Fluency modes only, which is still useful — but the real value unlocks at Premium.

Grammar Checker

QuillBot's Grammar Checker has matured into a genuinely competitive alternative to Grammarly's core offering. It catches spelling, grammar, punctuation, and sentence structure issues with solid accuracy.

One standout feature: it doesn't just flag errors, it explains why something is wrong. For learners and non-native speakers, this context is valuable. It also handles comma splice errors, subject-verb agreement, and misplaced modifiers better than many tools in its price range.

That said, Grammarly still edges it out on stylistic and tone suggestions. QuillBot's Grammar Checker is excellent for correctness — Grammarly is better if you want deep style coaching.

Summarizer

The Summarizer tool can condense long articles, papers, or documents into key points. You can choose between a paragraph summary (prose format) or bullet points, depending on what you need.

It handles academic papers and dense web articles reasonably well, though it occasionally misses nuance in heavily technical content. For quickly digesting research before writing, it's a genuine time-saver. Free users can summarize up to 1,200 words per session; Premium removes that cap.

Plagiarism Checker

The Plagiarism Checker compares your text against a database of web pages and academic sources. It's a useful addition but worth noting: it runs on a credit system, separate from the standard subscription. Premium users get 20 plagiarism checks per month included; additional checks cost extra.

It's not quite at the level of Turnitin (which is the standard in academic institutions), but for a quick pre-submission check or to verify your own originality, it does the job.

Co-Writer

Co-Writer is QuillBot's answer to the demand for an integrated writing workspace. It combines the paraphraser, grammar checker, summarizer, and a basic AI writing assistant into one unified document editor.

You can start writing, pull in paraphrased suggestions inline, run grammar checks on sections, and summarize references — all without switching tabs. It's not going to replace Notion or Google Docs as your daily writing home, but for writing projects where you heavily use QuillBot's tools, it keeps things streamlined.

Citation Generator

An often-overlooked feature, the Citation Generator is a lifesaver for students and academics. It supports APA, MLA, Chicago, and several other formats, and you can generate citations by entering a URL, DOI, ISBN, or title.

It's straightforward, accurate for most sources, and completely free. If you regularly write research papers, this alone justifies keeping QuillBot bookmarked.

Browser Extension & Integrations

QuillBot's Chrome extension is polished and practical. It lets you paraphrase and grammar-check text on any webpage or in any text field — Gmail, Google Docs, LinkedIn, wherever. The Microsoft Word add-in works similarly and is genuinely useful for writers who live in Word.

Google Docs integration has also improved significantly. These integrations are often where "nice on the website" tools fall apart, but QuillBot's work reliably.

Pricing

QuillBot has a straightforward two-tier pricing model:

Free plan includes:

• Paraphraser (125 words per pass, Standard + Fluency modes)
• Grammar Checker (limited)
• Summarizer (1,200 words)
• Citation Generator (unlimited)
• 3 synonym options on the synonym slider

Premium plan includes:

• Paraphraser (unlimited words, all 8 modes)
• Full Grammar Checker
• Summarizer (unlimited)
• Plagiarism Checker (20 checks/month)
• Faster processing
• Freeze words feature (lock specific words from being changed)
• Custom paraphrasing mode
• Compare modes side-by-side

At $8.33/month billed annually, QuillBot Premium is one of the better-value AI writing tools on the market. There's no team plan currently offered, which is a gap for agencies or small businesses.

👉 Try QuillBot here: Quillbot

Pros

• Genuinely useful free tier — the free plan isn't crippled to the point of being useless, making it easy to evaluate before paying
• Paraphrasing quality is best-in-class — the synonym slider and multiple modes give you real control over output
• Affordable Premium pricing — at $8.33/month annually, it's cheaper than Grammarly Premium and most AI writing tools
• Chrome and Word integrations work well — unlike many tools, QuillBot's extensions are reliable and responsive
• Grammar Checker is legitimately good — strong for correctness, with useful explanations
• Citation Generator is free and accurate — a genuine standalone value-add for students
• Non-native English speakers get outsized value — the Fluency and Formal modes help produce natural-sounding English effectively

Cons

• Not a content generator — if you need to create content from scratch, QuillBot can't do that; you'll need a different tool
• Plagiarism Checker credits feel stingy — 20 checks/month is fine for most users, but academic writers doing multiple drafts can burn through these quickly
• No team/business plan — there's no multi-seat pricing or collaboration features, limiting its use in team environments
• Paraphraser has a word limit on free — 125 words per pass is restrictive if you're working with long documents on the free tier
• Can produce awkward phrasing on aggressive settings — turning the synonym slider to maximum sometimes produces technically correct but stilted output; you still need to review everything
• Summarizer struggles with highly technical content — legal documents, dense scientific papers, or highly jargon-heavy text sometimes get distorted summaries

Who Is QuillBot Best For?

Students and academics are the core audience and get the most obvious value — paraphrasing sources without plagiarizing, cleaning up writing, generating citations, and checking grammar before submission.

Non-native English speakers benefit enormously from the Fluency and Formal modes, which help transform technically correct but stilted English into natural, idiomatic writing.

Content editors and copywriters who need to quickly rework existing copy — adapting brand material for new channels, simplifying technical documentation, or creating variations of ad copy — will find the paraphraser a real workflow accelerator.

Bloggers and freelancers who write a lot and want a grammar safety net alongside occasional paraphrasing help. QuillBot works well as a lighter-weight, more affordable alternative to Grammarly for this group.

Researchers who need to digest sources quickly using the Summarizer and manage citations efficiently.

Who Should Look Elsewhere?

If you need to generate original long-form content from a prompt, QuillBot isn't that tool. Look at Try Writesonic, Jasper, or similar AI content generators instead.

If you want deep style and tone coaching, Grammarly Premium (Try Grammarly) offers more sophisticated stylistic feedback, engagement scores, and tone detection than QuillBot currently does.

If you're an agency or team, the lack of multi-seat plans or collaboration features means you'd have individuals paying separately — not ideal.

If you need enterprise-grade plagiarism detection, tools like Turnitin or Copyscape are more appropriate for institutional use.

QuillBot vs Alternatives

vs Grammarly (Try Grammarly): Grammarly wins on style coaching, tone detection, and plagiarism checking quality. QuillBot wins on paraphrasing, value for money, and the Citation Generator. For many students, QuillBot is simply the better fit at a lower price.

vs Wordtune (Wordtune): Wordtune focuses on sentence-level rewrites and has a slicker inline editing experience. QuillBot offers more tools (Summarizer, Citation Generator, Plagiarism Checker) and a more powerful paraphraser. Wordtune's free tier is more restrictive. QuillBot generally wins on overall value.

vs Writesonic (Try Writesonic): These tools barely compete — Writesonic is an AI content generator, QuillBot is a refinement tool. If you need both, you'd likely use them together, not pick one over the other.

Verdict

QuillBot Rating: 4.1 / 5

QuillBot earns its place in 2026 not by trying to be everything, but by being really good at a specific set of problems. The paraphraser is the best on the market. The Grammar Checker punches well above its price point. The Citation Generator and Summarizer add genuine utility that competitors don't match. And the pricing — especially the annual Premium plan — is hard to argue with.

The limitations are real: it won't write original content for you, team use is awkward, and the plagiarism checker credits system could be more generous. But these are gaps in scope, not failures in execution.

Who should subscribe: Students, ESL writers, researchers, content editors, and solo writers who want a reliable, affordable grammar and paraphrasing tool.

Who should skip it (for now): Teams needing collaboration features, writers who primarily need content generation, and anyone whose main need is deep stylistic coaching.

For most individuals who write regularly, QuillBot Premium at $8.33/month is an easy yes.

👉 Try QuillBot free: Quillbot

Frequently Asked Questions

Is QuillBot free to use?

Yes. QuillBot has a free plan that includes access to the paraphraser (up to 125 words per pass, two modes), the Grammar Checker, Summarizer (up to 1,200 words), and the Citation Generator. It's a genuine free tier — useful enough to evaluate the tool properly before committing.

Does QuillBot work for academic writing?

Yes, and it's particularly well-suited to it. The Formal paraphrasing mode, Grammar Checker, Summarizer, Citation Generator, and Plagiarism Checker all target common academic writing tasks. Just be aware of your institution's policies — some have rules about AI paraphrasing tools.

Is QuillBot considered plagiarism?

This is a nuanced question. Using QuillBot to paraphrase someone else's work and passing it off as original analysis is academically dishonest — the tool doesn't change that. However, using it to rephrase your own writing, improve fluency, or understand how to express a concept differently is generally acceptable. Always cite your sources regardless.

How does QuillBot compare to Grammarly?

They serve overlapping but distinct purposes. Grammarly is the stronger tool for style coaching, tone detection, and overall writing improvement. QuillBot is the stronger tool for paraphrasing, and it also includes a Summarizer and Citation Generator that Grammarly lacks. QuillBot is also cheaper. Many writers use both.

Does QuillBot have a Word limit?

Free users are limited to 125 words per paraphrasing pass and 1,200 words for the Summarizer. Premium users get unlimited words on the paraphraser and summarizer. There's no hard document cap in the Co-Writer.

Is QuillBot safe? Does it store my text?

QuillBot states in its privacy policy that it does not sell user data. Text submitted to the tool is processed to generate outputs. For highly sensitive or confidential documents (legal, medical, proprietary business content), review their privacy policy carefully before use — as with any cloud-based writing tool.