CoGrader is an AI grading tool focused specifically on essay and text-based assignments, integrating directly with Google Classroom so teachers can grade within their existing workflow. It uses AI to score student writing against a rubric, generate feedback, and flag issues, aiming to reduce the hours teachers spend on repetitive essay marking. Reviewers note CoGrader is one of the more focused tools in the AI grading category: strong specifically for essay-style writing, but narrower than all-in-one platforms when it comes to grading coding assignments, STEM problem sets, or supporting LMS platforms beyond Google Classroom (such as Canvas, Blackboard, or Moodle). Pricing sources vary somewhat, but generally describe a free tier with a capped number of graded answers per month and a paid Pro tier for unlimited grading.