QuillBot does one thing exceptionally well: it rephrases a sentence you’re stuck on. That narrow focus makes it either indispensable or unnecessary depending on how you write. This review covers what’s free, what Premium adds, and whether the price makes sense — with the honest note that QuillBot isn’t part of the eight tools in our main benchmark, so pricing and limits here come from QuillBot’s official documentation.
QuillBot Pricing: Free vs Premium
| Feature | Free | Premium |
|---|---|---|
| Paraphrase words/pass | 125 words | ✓ Unlimited |
| Paraphrase modes | 2 (Standard, Fluency) | ✓ 7+ modes |
| Summary tool | 1,200 words | ✓ 6,000 words |
| Grammar checker | Basic | ✓ Advanced |
| Plagiarism checker | ✗ | ✓ (add-on credit) |
| Price / month | $0 | $19.95 monthly / $8.33 annual |
Prices and limits verified August 2026 from QuillBot’s official documentation.
The Free Plan Is Genuinely Useful
Unlike most freemium tools, QuillBot’s free tier isn’t a teaser — 125 words per pass with two modes handles most single-sentence problems. That’s the honest sweet spot: if your need is “unstick a sentence here and there,” the free plan probably covers it permanently. Upgrade only when you hit the word cap repeatedly.
What Premium Actually Buys You
Unlimited paraphrasing (or a much higher cap), all the modes (Formal, Simple, Creative, etc.), the extended summarizer, and the advanced grammar checker. The modes matter if you rewrite constantly: the synonym sliders and Formal/Simple switches give real control over the output voice. For daily rewrites, Premium is worth the $8.33/mo annual rate — not the $19.95 monthly, which is a bad deal by comparison.
Where QuillBot Fits vs Grammarly
QuillBot is not a Grammarly replacement and vice versa. Grammarly fixes mistakes; QuillBot rewrites. If your issue is grammar, QuillBot’s checker is decent but Grammarly is more precise. If your issue is phrasing, Grammarly won’t get you unstuck the way QuillBot’s modes do. Budget move: use both free tiers.
Is QuillBot Detectable? (Honest Note)
QuillBot is widely used to “humanize” AI text — and modern AI detectors increasingly flag the telltale synonym-swapping that aggressive paraphrasing leaves behind. We don’t recommend using any rewriter to hide AI authorship; use it to make your writing clearer, which is its actual job.
Our Verdict
- Occasional rewriters — free plan is enough.
- Daily rewriters — Premium at $8.33/mo annual is fair value.
- Grammar-focused — choose Grammarly instead.
Test the free plan
Use the 125-word free paraphrasing for a week. If you hit the cap, that’s the signal to consider Premium at the annual rate.
Try QuillBot Free →Frequently Asked Questions
Is QuillBot free?
Yes — a free plan with 125 words per paraphrase pass, two modes, and a 1,200-word summarizer. No credit card required.
How much does QuillBot Premium cost?
$19.95/mo billed monthly or $8.33/mo billed annually. The annual rate is the fair one.
Is QuillBot better than Grammarly?
Different jobs. QuillBot rewrites sentences; Grammarly corrects grammar. Choose by your problem, or use both free tiers.
Can teachers detect QuillBot?
Rewritten text can be flagged by modern AI detectors, especially aggressive paraphrasing. Use it to improve your own writing, not to hide AI authorship.
What are QuillBot free limits?
125 words per paraphrase pass, 2 modes, 1,200-word summary, basic grammar checking. Premium removes the caps.