Discover what Grammarly's AI Grammar Check is and how it catches grammar, spelling, and punctuation errors to improve your writing.

Grammarly’s AI Grammar Check is a writing assistant that scans your text and flags errors ranging from punctuation slips and spelling mistakes to awkward sentence structures and incorrect word choices. It is powered by machine learning, meaning it improves over time by learning from large amounts of correct writing. The result is instant feedback that helps make your writing clearer and more accurate — useful for students, professionals, and content creators alike.
The tool comes from Grammarly, a company founded by Alex Shevchenko, Max Lytvyn, and Dmytro Lider. Grammarly is well known for its online grammar checker and writing assistant, trusted by many individuals and professionals to improve writing quality and correctness.
Beyond fixing mistakes, Grammarly can be used as an ongoing way to build writing fluency and overall quality, helping you produce polished, concise work with confidence.
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