QuillBot
WritingThe AI tool that rewrites clunky sentences into clear ones.
QuillBot rewrites sentences in a clearer or different tone, checks grammar, and summarizes long text, all from one browser extension or web app.
Visit QuillBotWhat can QuillBot do?
Paraphrase sentences in multiple styles: Rewrites a sentence or paragraph in different tones, from formal to simple to creative, with several options to pick from.
Check grammar and fix errors: Flags grammar, punctuation, and spelling mistakes as you write or paste in text.
Summarize long text: Condenses articles, reports, or papers into a short summary or bullet points.
Check for plagiarism: Scans your text against billions of web pages and academic papers on paid plans.
Generate citations: Builds citations in APA, MLA, Chicago, and other formats from a link or file.
Quick Facts
Free Plan?
Yes, limited word counts
Pricing
From $8.33/month
Launched
2017
Headquarters
Chicago, USA
Pros
Best-in-class paraphrasing: Rewrite quality and speed are the standout feature, genuinely useful for turning a clunky sentence into a clear one.
A real free plan: Core paraphrasing and grammar checking work without paying, not just a trial.
Affordable at the annual rate: At $8.33 a month billed yearly, it undercuts most AI writing tools.
Simple to use: No setup or configuration. Paste text in and get a rewrite in seconds.
Cons
Free plan word limits are tight: 125 words per paraphrase and 1,200 words per summary aren't much to work with, forcing an upgrade to Premium fast.
Monthly price jumps a lot: Paying month to month costs $19.95, more than double the annual rate.
Not built for drafting long-form content: It rewrites and summarizes text you already have rather than writing blog posts or campaigns from scratch.
Pricing
Free: $0
Paraphraser capped at 125 words and Summarizer capped at 1,200 words, plus basic grammar checks.
Premium: $8.33/month
Most popularUnlimited paraphrasing in every mode, plagiarism checker, AI co-writer, unlimited summarizing, and citation generation. Billed annually at $99.95 ($19.95/month if billed monthly).
Teams: $7.50/user/month
Everything in Premium for 2 to 10 seats, with shared billing for the whole team.
Pricing and features may have changed. Check QuillBot's website for the latest details.
Knowtably Rating
Knowtably's Take
QuillBot does one thing better than almost anyone: rewriting a clunky sentence into a clear one. It also checks grammar, summarizes text, and generates citations, but the paraphraser is the standout feature. It reworks text you have rather than drafting new content from scratch.
We'd choose this if: You need to rewrite, summarize, or clean up text you have already written, especially for essays, reports, or academic work.
We wouldn't choose this if: You need to draft new, long-form content from scratch rather than rework existing text.
Excellent
Knowtably Rating
Quick Facts
Free Plan?
Yes, limited word counts
Pricing
From $8.33/month
Launched
2017
Headquarters
Chicago, USA