Reviewed by the NexaToolkit team · Last reviewed June 2026. The key fact most roundups bury: Grammarly is English-only. For multilingual work that rules it out. NexaToolkit may earn a commission from links on this page — it never changes what we recommend.
If you write in more than one language, the most famous proofreading tool — Grammarly — can’t help you: it’s English-only. The best multilingual proofreaders cover 25–30+ languages and cost less. Here are the top picks for multilingual content and error detection in 2026, with real pricing.
Best multilingual value: LanguageTool
LanguageTool (free tier; Premium $4.99/month annual) supports 30+ languages at about a third of Grammarly’s cost — the best-value pick for writers working across languages, with grammar, style, and spelling in each.
Best for natural fluency: DeepL Write
DeepL Write (free tier; bundled in DeepL Pro from ~$9/month) excels at making technically-correct-but-awkward text read like a native speaker wrote it — uniquely valuable for non-native writers, from the company behind DeepL Translator.
Best English-only depth: Grammarly & ProWritingAid
If your work is only English, Grammarly ($12) and ProWritingAid ($120/year) go deeper — but neither offers writing assistance in other languages. Don’t pick them for multilingual work.
Multilingual proofreading tools compared
| Tool | Price | Languages |
|---|---|---|
| LanguageTool | Free / $4.99/mo | 30+ |
| DeepL Write | Free / ~$9+/mo | Multiple (fluency) |
| Grammarly | $12/mo | English only |
| ProWritingAid | $120/yr | English only |
A real scenario
A content manager producing posts in English, German, and Spanish: Grammarly is immediately out — English-only — so they use LanguageTool Premium ($4.99) for grammar and error detection across all three languages, and DeepL Write (free tier) to make the German and Spanish read naturally rather than translated. About $5/month for genuinely multilingual proofreading, versus Grammarly’s $12 that wouldn’t even cover two of their three languages. The lesson roundups skip: for multilingual work, language coverage is the first filter — LanguageTool and DeepL Write win not on depth but on the simple fact that they actually work in your languages.
Frequently asked questions
What’s the best multilingual proofreading tool?
LanguageTool (free / $4.99/month) for grammar and error detection across 30+ languages, paired with DeepL Write (free / ~$9+) for natural fluency in non-English text. Both cost less than Grammarly, which is English-only.
Does Grammarly work in other languages?
No — Grammarly only supports English variants (US, UK, Canadian, Australian). For any non-English writing, use LanguageTool or DeepL Write instead.
Is LanguageTool cheaper than Grammarly?
Yes — LanguageTool Premium is $4.99/month (annual), roughly a third of Grammarly Pro’s $12, while supporting far more languages. For multilingual writers it’s both cheaper and more capable.
More: see our AI writing assistants compared and AI research tools for knowledge workers.
