The most common misconception is that it can proofread Chinese - **it only handles English**. The free version's spell and grammar check is actually enough for daily use, what really forces you to upgrade is the "100 times AI generation per month" and the sentence rewriting function being locked. If you need plagiarism detection for writing papers, you definitely need Pro.
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Continuously re-checked, every fact dated
Has a free plan
What Is This
Real-time English grammar and tone checking that works inside Gmail, Docs and most web apps.
Free Version Limitations
Grammar and spell check, tone detection, 100 times of AI generation per month (Checked on grammarly.com/plans as of 2026-07-31)
Available Models And Quantity
Model
Free quota
Calculate Time Window
Description
Grammarly editing engine
No limit on spell and grammar checking
—
Basic editing is unlimited, but AI-powered features such as Image generation have limitations.
Free Usage Limit
Features
Free quota
Description
Spell and grammar check
Unlimited
The most practical part of the free version
Sentiment analysis
Available
Sounds friendly.
AI generation/rewriting
100 times per month
This is the main limitation of the free version
The SaaS pricing comparison website has been translated from Traditional Chinese to English, providing a clear and concise comparison of various products, including their pricing, features, and limitations, such as Image generation, Video generation, Chatbots, Coding, Writing, Productivity, Search & research, Music & voice, and AI agents, as well as details on Free quota, Quota, Quota reset, Commercial use, and Watermark.
No
Requires Pro
Plagiarism detection
No
Requires Pro, suitable for those who need to write papers
Please provide the Traditional Chinese text that needs to be translated into English. I will ensure that the translation is natural, concise, and accurate, following the provided guidelines for fixed translations.
Not supported
**Grammarly only supports English**
Quota Resets At
Resets monthly
Terms Of Use
Registration is required; it is recommended to install the browser extension to fully utilize its features.
Best for: Frequent writers of English emails, reports, resumes, or theses
US$12 / mo
Monthly 2,000 times AI generation/person, including sentence rewriting, tone adjustment, plagiarism detection, and AI-generated content detection, with unlimited personalized suggestions and priority customer service; a 7-day free trial is available. The official website indicates that there is a yearly payment discount, but the actual fee rate is not disclosed (Checked on 2026-07-31).
Which Model
Grammarly full engine
Usage Quota
2,000 times of AI generation per month per person
Max Reading Time
Browser, Desktop App, Mobile device
This Plan Includes
2,000 times of AI generation per month
The SaaS pricing comparison website translates to: The website compares prices of various SaaS products, including their respective features such as Image generation, Video generation, Chatbots, Coding, Writing, Productivity, Search & research, Music & voice, and AI agents. It also lists the Free quota, Quota, Quota reset, and whether Commercial use is allowed, along with the status of Watermark and the frequency of Quota reset, such as Resets daily, Resets monthly, and other details like Weekly, Daily, Monthly, and whether the information has been Checked.
Tone adjustment
Plagiarism detection
AI-generated content detection
Unlimited personalized recommendations
Priority Support
7-day free trial
Not Included
AI generation has no limit (that is Enterprise)
Enterprise-grade security and management features
What Sets Us Apart
The difference from the free version lies in "AI generation 100 → 2,000 times" and "sentence rewriting". If you just want to catch spelling mistakes, the free version is enough; if you want it to help you convert Chinglish into native English, you'll need Pro. The official website mentions that there is a yearly payment discount, but the rate is not disclosed.
Custom quotes are available upon request. AI generation is unlimited, with features including BYOK encryption, SAML SSO/SCIM, data breach protection, and customizable role permissions (Checked on 2026-07-31 from official website).
A godsend for students and researchers to feed data and generate summaries/podcasts
FreeThe free version is sufficient and permanently free, with limits on the number of sources or notebooks, and does not require subscription or credit card.
A veteran English writing editing tool that can be installed as a browser extension for instant editing on websites like Gmail, Google Docs, and LinkedIn. **It only handles English and does not support Chinese editing**, which is why zh_support is marked as none — however, for Taiwanese users who need to write English emails, reports, and resumes, it is a necessity.
Related Guide：How to Stretch Grammarly Free's 100 AI Prompts a Month — and What Doesn't Count (2026)
Grammarly's free plan gives 100 AI prompts per month, but spelling, grammar and tone detection don't touch that allowance at all. Checked against the official plan comparison: what burns a prompt, what is simply unavailable on free, and how to budget the 100. Last checked: 2026-09-05
Looking for Grammarly deals, discounts or promo codes? We check the official site automatically every day, review changes by hand, and date-stamp every entry.
