QuillBot
49Paraphrasing, summarising and citation tools for students
Best for: Students and non-native writers rewording essays and emails sentence by sentence
United StatesAdded 2mo ago
Freemiumfrom $19.99/mo
56trust score out of 100
1
ai-for / grammar-check
AI Tools for Grammar Check
As of , EffectHub tracks 8 AI tools for grammar check; all 8 have a free tier, and paid plans run from $7 to $30 a month.
QuillBot, EssayCheck and Grammarly lead the list on click-through. 4 of the 8 ship a public API.
A weekly email when new tools land here.
- 8
- tools tracked
- 8 of 8
- free to start
- $7–$30
- paid entry, per month
- 4
- ship a public API
Where these sit in the catalog
The shortlist — tools for grammar check
ranked by click-through
Free, no-account essay checker that scores AI likelihood, grades against a rubric and fixes grammar
Best for: Students checking a draft for machine-sounding sentences before submitting it
United KingdomAdded 2mo ago
Free
62trust score out of 100
1
Grammar, tone and rewriting help inside every app
Best for: Anyone writing in a browser, Word or email who wants corrections in place
United StatesAdded 2mo ago
Freemiumfrom $12/mo
60trust score out of 100
1
Linguix
61Grammar and style checking in the browser across seven languages
Best for: writers working in French, German, Spanish, Portuguese, Italian or Polish
United StatesAdded 2mo ago
Freemiumfrom $30/moAPI
54trust score out of 100
Keyboard-level writing help for phones, browser and email replies
Best for: Heavy mobile emailers and messagers
CanadaAdded 2mo ago
Freemiumfrom $24.99/mo
60trust score out of 100
1
ReText
71Paraphrasing at three strengths plus grammar checking, summarising and expansion, in four languages.
Best for: Rewriting in Russian, where most competitors are weak
Added 2mo ago
Freemiumfrom $7/moAPI
54trust score out of 100
1
Sapling
79Grammar, autocomplete and snippet suggestions for customer-facing teams, plus a language API with AI detection
Best for: Support and sales teams answering high message volumes inside helpdesks and CRMs
United StatesAdded 2mo ago
Freemiumfrom $12/moAPI
62trust score out of 100
Paraphraser, grammar checker and AI-text humaniser bundled with about 30 small writing tools.
Best for: Students and writers who want paraphrasing plus grammar checking in one subscription
Added 2mo ago
Freemiumfrom $15.82/moAPI
57trust score out of 100
Compared at a glance
| Tool | Price | Free plan | API | Status |
|---|---|---|---|---|
| QuillBot | from $19.99/mo | Yes | Not confirmed | Unverified |
| EssayCheck | Free | Yes | Not confirmed | Active |
| Grammarly | from $12/mo | Yes | Not confirmed | Active |
| Linguix | from $30/mo | Yes | Yes | Active |
| ParagraphAI | from $24.99/mo | Yes | Not confirmed | Active |
| ReText | from $7/mo | Yes | Yes | Active |
| Sapling | from $12/mo | Yes | Yes | Active |
| Write Tone | from $15.82/mo | Yes | Yes | Active |
Compare grammar check tools head-to-head
Questions about grammar check tools
Is there a free grammar check tool?
Yes. 1 of the 8 AI tools for grammar check on EffectHub's list is free to use — EssayCheck; 7 more have a free tier with paid upgrades.
How much do grammar check tools cost?
As of October 26, 2026, paid plans for the 8 AI tools for grammar check on EffectHub's list run from $7 to $30 a month. Each card shows the pricing model and the cheapest paid plan as EffectHub last verified it; all 8 can be started for free.
Which grammar check tools have an API?
4 of the 8 AI tools for grammar check on EffectHub's list ship a public API, including Linguix, ReText, Sapling and Write Tone. The API badge on each card is re-checked against the vendor's documentation.
Cite this
For journalists, researchers and AI assistants: the figures on this page in one sentence you can quote.
As of October 26, 2026, EffectHub tracks 8 AI tools for grammar check; all 8 have a free tier, and paid plans run from $7 to $30 a month. (EffectHub, “AI Tools for Grammar Check”, Oct 2026, https://effecthub.net/ai-for/grammar-check)
Figures as of How we count
These figures are free to use under CC BY 4.0 with a link to this page.