LanguageTool vs QuillBot

LanguageTool (AI-based multilingual grammar, style and paraphrasing checker (30+ languages, vendor-stated).) and QuillBot (AI paraphrasing and writing tools.) compared side by side: plans and prices, vendor-stated features, platforms and sign-in, with the date each fact was checked. Matches based on official product information.

Based on official vendor pages, linked below
LanguageTool pricing checked: 2026-10-27
QuillBot pricing checked: 2026-10-27

At a glance

LanguageTool

AI writing tools

What it does: AI-based multilingual grammar, style and paraphrasing checker (30+ languages, vendor-stated).
Strong at: Strong fit for multilingual grammar checking with a few free AI rephrases per day.
Free plan: Yes - mixed free access
Paid plans from: US$24.9 / month

Pricing checked 2026-10-27 · Full LanguageTool record · Official site

QuillBot

QuillBot (Learneo)

AI writing tools

What it does: AI paraphrasing and writing tools.
Strong at: Strong fit for paraphrasing, summarizing and grammar checks with a small daily free allowance.
Free plan: Yes - ongoing free plan
Paid plans from: US$19.95 / month

Pricing checked 2026-10-27 · Full QuillBot record · Official site

Plans & pricing

LanguageTool plans & pricing

Checked 2026-10-27. · Vendor pricing page Confirm prices and terms with the vendor before buying.

Premium

$24.90/mo monthly-billed (per languagetool.org/premium, 2026-10-27)

QuillBot plans & pricing

Checked 2026-10-27. · Vendor pricing page Confirm prices and terms with the vendor before buying.

Free

$0 / month

Premium

$19.95 USD per month (billed monthly)

Team Plan

No public price

Side-by-side facts

	LanguageTool	QuillBot
Free plan	Yes - mixed free access	Yes - ongoing free plan
Paid plans from	US$24.9 / month	US$19.95 / month
Platforms	Not stated	Web; Mac and Windows apps; iOS and Android; Chrome, Edge and Safari extensions.
Sign-in	Optional for basic web checking. Account adds dictionary, statistics and saved texts.	Not for basic web paraphrasing. An account is used for Premium and account-linked features.
API	Yes. HTTP proofreading API with free limits and paid developer access.	No. Quillbot says it does not offer a B2B or B2C API.

What each tool says it does

QuillBot - vendor-stated features

Paraphrasing modes
Premium pause

Worth knowing before you choose

LanguageTool - worth knowing

Identity from owning pages: languagetool.org says "LanguageTool is an AI-based grammar checker"; /about describes AI-based style/tonality analysis and an AI paraphraser.
A writing checker, not a translator - filed under writing.
Core has been open source since 2003 (vendor-stated).
free non-AI checking standing, plus 3 AI rephrases per day - a renewable daily AI allowance (mixed).
'Sentence rephrasing by A.I.
3 per day' on the Basic column; free non-AI checking capped at 2,000 characters per text field; Basic usable without a user account per FAQ.
Daily renewable AI subscope - mixed.

QuillBot - worth knowing

Prices checked.
Free limits per page: paraphrase up to 100 words, 2 modes, humanize up to 100 words (limited), AI Detector limited.
Annual total not stated by vendor (page shows '58% off' label); not listed.
Team Plan has no public price.
help.quillbot.com - 'Free accounts include:.
Limited number of AI Chat queries/day' and 'Limited daily paraphrases are available for the paraphraser.' Daily renewable cadence; amounts unpublished.
The 125-word figure is a per-paraphrase cap, not a daily quota.
Premium $19.95 monthly-billed checked.
Free tier is renewable but feature-limited: paraphrase up to 100 words, 2 modes.

Common questions

Is LanguageTool or QuillBot free to use?

LanguageTool: Yes - mixed free access (checked 2026-10-27). QuillBot: Yes - ongoing free plan (checked 2026-10-27).

What do LanguageTool and QuillBot cost?

LanguageTool's entry paid plan is US$24.9 / month and QuillBot's is US$19.95 / month, from each vendor's pricing page (2026-10-27 and 2026-10-27 respectively). The tables above list every plan each vendor published.

Which is better, LanguageTool or QuillBot?

It depends on the job. LanguageTool: Strong fit for multilingual grammar checking with a few free AI rephrases per day. QuillBot: Strong fit for paraphrasing, summarizing and grammar checks with a small daily free allowance. The feature and pricing tables above show where they differ.

Where do these facts come from?

Every fact on this page is read from the vendors' own product and pricing pages, with the checked date shown beside it. Links to both official pages are at the top of each column.

Keep comparing

This comparison is not a recommendation: it sets out what each vendor states on its own pages, with the dates those pages were checked. Prices and features change - confirm with the vendor before buying.