WriteLab gives instant, actionable, and specific feedback on any piece of writing. We use methods from natural language processing to give students comments and ask them questions to help them improve their clarity, concision, logic, and grammar as they write. WriteLab helps students when they need help most. We also highlight what students do well. We believe that if students see what they’ve done well, they will repeat those effective strategies. Our platform helps students learn as they write, coaching them through the writing process and helping them evaluate the decisions they make as writers. For the first time, it’s possible for writers to get substantive feedback on their work instantly.