Dev Tools · 1h ago
Developer Builds Free AI Grammar Checker That Runs Entirely in Browser
A developer created a free AI grammar checker that runs entirely in the browser, using DeepSeek API via a Cloudflare Worker. The tool offers grammar corrections, style polish, readability scores, CEFR level, and tone detection without storing user text. It uses vanilla JS, HTML, and CSS with no build step, costing $0.27 per million tokens.
Meridian48 take
The project is a neat demo of cheap AI inference, but its reliance on a single API and lack of scalability limits its practical use beyond personal projects.
Read the full reporting
I Built a Free AI Grammar Checker That Runs Entirely in the Browser →
DEV Community
ai-grammar-checkerbrowser-tool