From time to time, we hear from curious users who want to know more about the technology behind Grammarly. Where do all those writing corrections, suggestions, and enhancements come from? A team of magic elves? A squad of word-obsessed robots? A really, really busy human editor?

Actually, if you thought “robots” you’re in the right territory.

Leverages AI: Underlying all of Grammarly’s products is a sophisticated artificial intelligence system built to analyze sentences written in English. Grammarly’s team of computational linguists and deep learning engineers designs cutting-edge algorithms that learn the rules and hidden patterns of good writing by analyzing millions of sentences from research texts. When you write with Grammarly, our AI analyzes each sentence and looks for ways to improve it, whether it’s correcting a verb tense, suggesting a stronger synonym, or offering a clearer sentence structure.

Runs on cloud: As you can imagine, a complex AI system like this one requires a lot of computing power—much more than a personal computer or mobile device can provide. For that reason, it runs in the cloud rather than locally on your device. All you need to check your writing with a Grammarly product is an Internet connection.

Improves with data: When you use Grammarly, you can help improve its suggestions. Anytime you hit “ignore” on an unhelpful suggestion, Grammarly gets a little bit smarter. Over time, our team can make adjustments to the suggestions with high ignore rates to make them more helpful.

Uses context clues: The difference between Grammarly and built-in spelling and grammar checkers isn’t just accuracy or breadth of feedback, it’s also contextual awareness. After all, an email to your boss probably shouldn’t sound like a text to your best friend. Grammarly’s browser extension, for example, makes stricter grammar corrections and offers suggestions to help you sound more formal and professional when you’re writing on LinkedIn. But when you’re posting on Facebook and you want to write in a more relaxed voice, Grammarly’s casual setting will turn off alerts for the passive voice and informalities like slang and sentence fragments.

Want to see for yourself how it works? Install the free Grammarly for Windows and Mac today for writing help across all your favorite websites.