Grammarly free tier: quotas, limits and gotchas
Grammarly Free Tier
How Amo and Pimi look
Pimi, let me pour cold water on this first — Chinese support is flatly none, English only, unusable for Chinese speakers. The free tier gives only 100 AI generations a month — write a few letters and you're already out.
I'll take the cold water, but it's the old-guard champion of English writing proofreading – its browser extension does real-time proofreading right in Gmail, Google Docs, and LinkedIn. Free-tier spelling/grammar checking and tone detection are both included – genuinely enough for basic needs.
So, do you need to pay or not?
Frequently writing English emails and reports: Free version offers 100 times of AI generation for trial. Writing daily: Pro US$12/month is worthwhile, with a 7-day free trial to verify. However, annual payment discounts are unclear, so check the official website before subscribing. Only English editing is supported, Chinese requirements are not applicable.
Models and quotas
| Model | Quota | Window | Notes |
|---|---|---|---|
| Grammarly 校對引擎 | 拼字與文法檢查無上限 | — | 基本校對不限次數，受限的是 AI 生成功能 |
What you get for free
| Feature | Free tier | Notes |
|---|---|---|
| 拼字與文法檢查 | 無上限 | 免費版最實用的部分 |
| 語氣偵測 | 可用 | 告訴你這句聽起來是友善還是強硬 |
| AI 生成／改寫 | 每月 100 次 | 這是免費版的主要天花板 |
| 整句改寫 | 不可 | 需 Pro |
| 抄襲偵測 | 不可 | 需 Pro，寫論文的人會需要 |
| 中文校對 | 不支援 | **Grammarly 只做英文** |
Limits at a glance
- Quota reset: 每月重置
- Commercial use: Allowed
- Conditions: 需註冊帳號；建議安裝瀏覽器擴充功能才發揮得出來
Watch out for this
最常見的誤會是以為它能校對中文——**它只處理英文**。免費版的拼字文法檢查其實已經夠日常用，真正會逼你升級的是「每月 100 次 AI 生成」以及整句改寫功能被鎖住。寫論文需要抄襲偵測的話一定要 Pro。
When the free quota is insufficient, how much does it cost to pay for it?
| Plan | pricing | Description |
|---|---|---|
| Pro | US$12 / mo | 每月 2,000 次 AI 生成／人，含整句改寫、語氣調整、抄襲偵測與 AI 生成內容偵測、無上限個人化建議、優先客服；提供 7 天免費試用。官網標示有年繳折扣但未公布實際費率（2026-07-31 直讀官網） |
| Enterprise | 官方報價（洽詢） | 客製報價需洽詢業務。AI 生成無上限、BYOK 加密、SAML SSO／SCIM、資料外洩防護、自訂角色權限（2026-07-31 直讀官網） |
Checked 2026-08-22
Information for Taiwanese users
- Payment method:Payable; Credit card
- Chinese support: none
- Available platforms:web
Related
Sources: Grammarly 官方方案頁（2026-07-31 直讀）
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