Grading doesn't need
more tools.

It needs fewer moves.

Checkmate writes grades directly into Gradescope. You review, approve, and move on. No copy-paste. No second-guessing.

Add to ChromeChrome
Checkmate extension in Gradescope
gradescope.com/courses/cs161/assignments/...
Checkmate active

AI-Generated Grade

Correctness18/20
Style5/5
Documentation4/5
Total27/30
ChromeChrome Extension

Lives where you already grade

Checkmate is a Chrome extension that works inside Gradescope. No new tabs, no context switching. It reads the submission, applies your rubric, and waits for your approval.

Add to ChromeChrome

Why a Chrome Extension

Because the best tool is the one you don't have to open.

Separate apps create friction. Copy-pasting between windows wastes time and introduces errors. Checkmate embeds directly into Gradescope's interface, so grading happens in the same place it always has—just faster.

  • No context switching. Grades appear inline.
  • Full visibility. See AI reasoning alongside student work.
  • Full control. Nothing submits without your click.

The Grading Flow

01

Gradescope

Submission loaded

02

Checkmate AI

Rubric applied, grade drafted

03

TA Review

Approve, adjust, or override

04

Gradescope

Grade written, feedback posted