Grammarly vs LanguageTool
Grammarly scores 8.3 to LanguageTool's 5.5 among the AI writing assistants we rate, and is the better pick for 3 of the 4 kinds of buyer below.
Grammarly wins, 8.3 to 5.5
LanguageTool focuses on grammar and style checking, with no text generation, AI detection or humanizing feature; Grammarly offers all three. LanguageTool's Premium plan is $25.48 a month against Grammarly Pro's $30. LanguageTool states it does not train its AI on your writing at all, while Grammarly lets individual users opt out but defaults training on. Grammarly holds SOC 2 Type II and ISO 27001 certification; LanguageTool's business and privacy pages mention neither.
Pick Grammarly if you want AI text generation, detection and humanizing tools.
Pick LanguageTool if you want a cheaper plan with no AI training on your writing.
Best for
Who each one suits, decided on the criteria that matter to that buyer and the checked facts where the two differ.
- Checks for plagiarism: Grammarly yes, LanguageTool no
- Writes new text from a prompt: Grammarly yes, LanguageTool no
- Builds citations: Grammarly yes, LanguageTool no
- Monthly price, cheapest paid plan: Grammarly $30, LanguageTool $25.48
- Single sign-on: Grammarly yes, LanguageTool no
- SOC 2: Grammarly yes, LanguageTool no
- ISO 27001: Grammarly yes, LanguageTool no
- But LanguageTool leads on does not train AI on your writing: Yes against unless you opt out
How they score
Both are scored the same way, against the other AI writing assistants we rate, from facts on each vendor's own pages. Grammarly leads on 4 of 5 criteria.
Where they differ
Every point where the two vendors' published facts disagree, with a link to where each fact was read. "Not published" means the vendor does not say either way.
Published by only one of them
Where they match (8)
Pricing, plan by plan
Every plan each vendor publishes, monthly and yearly where both are offered.
Grammarly
LanguageTool
For everything else about each tool, read the full Grammarly review and LanguageTool review.
Grammarly vs LanguageTool: common questions
Which is better, Grammarly or LanguageTool?
Grammarly scores 8.3 and LanguageTool 5.5 out of 10 among the AI writing assistants we rate. Grammarly is ahead on what it helps with, where it works, teams and control and privacy and security.
Is Grammarly or LanguageTool cheaper?
Grammarly's cheapest paid plan is $12/mo (Pro plan, billed annually) and LanguageTool's is $4.99/mo (Premium, 2-year plan). Compare what each plan includes below before going on price alone.
What can Grammarly do that LanguageTool cannot?
On the facts both vendors publish: checks for plagiarism, writes new text from a prompt, builds citations, detects AI-written text, rewrites AI text to read as human, single sign-on, sOC 2 and iSO 27001.
