Qrammerly fans every sentence out to OpenAI, Anthropic, Google, Meta, Mistral, Cohere, DeepSeek, Qwen, xAI, Perplexity, Kimi and MiniMax, then ranks suggestions by how many models agree.
Each suggestion is annotated with the share of models that agreed and the cluster of overlapping spans. False positives drop sharply when a fix has 11/13 backing it.
API keys live on your device. The server uses them transiently for each request and never stores them.
We proofread one paragraph at a time and let you accept fixes one by one — fewer tokens, cleaner edits, no surprise rewrites.
Identical paragraphs return cached suggestions instantly without spending tokens — both on the server and in your browser.
Browsers via the extension. Word, Pages, Outlook, Mail, and any AX-compliant app via the Mac app. Press ⌥⌘G and Qrammerly takes over.
Beyond grammar: tone detection, audience- and formality-aware proofreading, Flesch readability, vocabulary diversity, reading time.
Hits the API at http://localhost:8787. Set your endpoint and keys below.
Free forever
$8 / month
Optional. Saves your accepted corrections and unlocks personal stats.
Qrammerly is MIT-licensed. The whole stack — server, Cloudflare Worker, four browser extensions, Mac app, website — lives in one repo. Stars, issues, and PRs all genuinely move it forward.
View on GitHub → File an issue Fork & PR