Correct a text in one step
Paste an email, an essay or a post and get it back corrected: verb tenses, agreement, spelling, accents, commas and capital letters. The checker changes only what is wrong, so the text still sounds like you, and it works in English, Portuguese, Spanish and most other common languages.
Credits
Each run uses credits for what the model actually costs, about 1 credit per 1,000 words. A free account gets 50 credits a month; Plus and Pro include more.
Private
Your text is sent over HTTPS to the AI model on Cloudflare's network, processed and returned. It isn't stored by UtilNest, logged by the AI gateway or used to train models.
How this works
An AI language model (Gemma 4 on Cloudflare Workers AI) reads the text and rewrites it with only the errors fixed: grammar, spelling, punctuation and agreement. It is told to keep your words, tone and line breaks and to ignore any instructions inside the text.
Frequently asked
Which languages does it support?
English, Portuguese (Brazil and Portugal), Spanish, French, German, Italian and most other widely used languages. It answers in the language of your text.
Is it free?
With a free account you get 50 credits a month, enough for roughly 50,000 words. Plus and Pro include more, and credit packs top them up.
Is my text private?
Your text is sent over HTTPS to the AI model on Cloudflare's network, processed and returned. It isn't stored by UtilNest, logged by the AI gateway or used to train models.
Can it make mistakes?
Yes. It's very good with common errors, but check names, technical terms and anything important before you send it.
Sources
- Cloudflare Workers AI — Gemma 4 26B A4B (model card, limits and pricing)
- Cloudflare Workers AI — Pricing (per-model unit prices and neurons)
Reviewed Oct 19, 2026 · test vectors fixtures/tools/text/grammar-checker/