QuillBot vs Grammarly vs ChatGPT: Which is Best for Paraphrasing?

September 5, 20254 min readAayush Pokharel

I paraphrase constantly: the same idea for a technical reader, then again for someone who wants two sentences instead of ten. I ran QuillBot, Grammarly's rewrite feature, and Claude and GPT prompted directly against the same paragraphs for a few weeks.

Four ways to paraphrase, side by side

Type MacQuillBotGrammarlyAI model directly (Claude, GPT)
Price$4.17/mo annually, BYOK$9.95/mo Premium, free tier with limits$12–30/mo (rewriting is a Premium add-on)Cents per use, BYOK
ApproachSelect text anywhere, then rewrite, formalize, shorten, or expand7 fixed modes (Standard, Fluency, Formal, Simple, Creative, Expand, Shorten)Conciseness and clarity tweaksPrompt-driven: describe the output you want
StrengthWorks in any Mac app, no browser tabFast, purpose-built, word-level synonym suggestionsBundled with grammar checking you're already paying forAdapts to any register, tone, or reading level
WeaknessMac onlySentence-by-sentence, can shift meaning unnoticedRewriting is a side feature, not real paraphrasingCopy-paste workflow, consistency varies
Type Mac expanding a paragraph

I select the rough version, hit the shortcut, and Type Mac hands back the paragraph expanded and cleaned up.

QuillBot swaps words; it doesn't understand intent

Paste text, pick a mode, get a rewrite. The word-level synonym suggestions help when I'm stuck on one word, but QuillBot works sentence by sentence and misses a document's overall flow. Formal mode kept handing me stiff, over-academic phrasing, a problem I flagged again researching Hemingway Editor alternatives.

Grammarly's rewriting is a bonus, not a reason to subscribe

It tightens wordy sentences well, but gives one version, not three registers. At $12 to $30 a month, that's a side feature bundled with grammar checking, and if grammar checking is the actual draw, the shortcuts are worth knowing: Grammarly keyboard shortcuts you're not using.

A well-written prompt beats a fixed mode

Ask an AI model to "paraphrase this for a 5th-grade reading level" and it does exactly that, no preset modes, only a description of what I want. The trade-off is consistency: the same prompt doesn't always come back the same quality twice, which is where saved context helps.

Type Mac using saved writing context

Type Mac remembers how I write, so the third paraphrase in a session still sounds like me.

Dedicated paraphrasing tools are a shrinking category

QuillBot solved a problem general AI couldn't when it launched. Claude and GPT now paraphrase better in most of what I tested, and they handle everything else too, the same overlap I found comparing Wordtune alternatives.

Students still need QuillBot; I don't

Students paraphrasing sources constantly get a fast workflow from QuillBot's mode-switching, worth the subscription if that's the daily task. More on that in AI tools for academic writing. I wanted something faster: select text anywhere, rewrite it, no paste.

Paraphrasing someone else's work still requires a citation

Running a source through QuillBot or an AI model changes the words, not the ideas. Paraphrasing tools improve your own writing; they don't launder someone else's work through a thesaurus algorithm.

What I paraphrase with now

Type Mac is what I still open weeks later. A few reasons:

  • It's the only one on the table that works outside a browser tab, in Mail, Slack, or wherever I'm actually writing.
  • BYOK means I get an AI model's flexibility without QuillBot's fixed modes.
  • Saved context keeps three paraphrases in a row sounding like the same person wrote them.
  • One shortcut instead of picking a mode, waiting for a rewrite, then copying it out.

The honest limitation: it's Mac only, no iPhone version, no Windows version. If you paraphrase from your phone as often as your laptop, QuillBot's app covers that and Type Mac doesn't.

Type Mac: paraphrasing that doesn't stop at your browser.