H
HReadability editor that flags wordy, unclear writing and offers AI fixes
From $8.33/mo
LanguageTool vs Originality.ai
Pricing, features, platforms and who each one suits — side by side.
L
Choose LanguageTool if…
- you want open source you can self-host or audit
- you work on Windows, macOS, iOS
- you're in its core audience: students, professional writers
O
Choose Originality.ai if…
- you're in its core audience: content publishers, marketing agencies
Side by side
Feature LanguageTool Originality.ai
Pricing modelFreemiumFreemium
Starting price—$12.95/mo
Free plan
Free trial
API
Open source
Trains AI on your contentNoYes, unless you opt out
Data retention—Scan history kept 30 days (Pro) or 365 days (Enterprise)
Security and complianceGDPR—
Tone adjustment—
Non-English checking—
Word/Google Docs add-in—
Browser extension—
Custom style guide—
PlatformsWeb, Chrome, Windows, macOS, iOS, APIWeb, Chrome, API
CategoryGrammar & ProofreadingAI Detection & Humanizers
CompanyLearneo, Inc.Originality AI Inc.
Based inUnited StatesCanada
Founded20032022
Part of——
Key features
L LanguageTool
- Grammar, spelling, punctuation and style checking
- AI sentence paraphrasing in several tones
- Support for 30+ languages and dialects
- Browser add-ons for Chrome, Edge, Firefox, Opera, Safari
- Plugins for Google Docs, Word, Pages, LibreOffice
- Personal dictionary and Picky Mode
- Team style guides and shared dictionaries
- Proofreading API with daily call-limit plans
O Originality.ai
- AI text detection with sentence-level highlights
- Plagiarism checker
- Fact and AI hallucination checker
- Grammar and readability checkers
- Bulk Scan for many documents
- Writing Replay showing how a document was written
- Deep Scan editing suggestions
- Shareable reports and PDF downloads
Plans and prices
From each vendor's site. Prices change — confirm before buying.
LanguageTool
BasicFree
PremiumPrice not shown on page
TeamsPrice not shown on page
BusinessCustom
Originality.ai
FreeFree
Pro$14.95/mo, or $12.95/mo billed yearly ($155.40/yr)
Enterprise$179/mo, or $136.58/mo billed yearly ($1,638.96/yr)
Strengths and limitations
LanguageTool
- Free Basic plan is available
- Supports 30+ languages and dialects
- Many integrations, including browsers, office suites and email clients
- Source code is published on GitHub
- Free plan is limited to 2,000 characters per text field
- Free plan allows only 3 AI rephrasings per day
- Prices did not display on the pricing pages
- Outlook add-on is still in beta
Originality.ai
- Free tier includes AI, plagiarism, grammar and fact checks
- Pro plan starts at $12.95/mo billed yearly
- Integrations for Chrome, Firefox, Google Docs, Moodle and Google Classroom
- Detects text that was paraphrased with AI
- API access only on the $179/mo Enterprise plan
- Credit-based usage: 1 credit equals 100 words
- Pricing page gives conflicting details on free credits and Pro scan history
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Built from each vendor's public website; we haven't tested them hands-on. Editorial policy