Less grading. More teaching.
A Google Chrome extension that opens alongside Canvas SpeedGrader. Click "Grade This Submission" and AI grades the essay or report against your assignment instructions and rubric — then fills in the score, rubric ratings, and written feedback automatically. You review and submit. No IT department. No Canvas integration.
Start Free50 grades/month · No credit card required · Works in minutes
For college, university, and K–12 educators · Requires Google Chrome
Climate Policy Analysis: The Paris Agreement
The 2015 Paris Agreement established a landmark framework for international climate cooperation. Nations committed to limiting warming to 1.5°C above pre-industrial levels, requiring significant emissions reductions from all signatories.
The policy implications for developing economies present a complex challenge that requires careful balancing of mitigation costs and adaptation needs...
AI will fill in Canvas automatically.
Analyzing submission…
Reading instructions & rubric
How it works
Katana is a Google Chrome extension — nothing to configure in Canvas, no IT department to involve, no integrations to set up. Install in minutes and start grading.
(Google Chrome required · Firefox and Safari support coming soon)
Open Canvas SpeedGrader
Navigate to any student submission in Canvas SpeedGrader. The Katana panel appears automatically on the right side of your browser.
Click "Grade This Submission"
Katana reads your assignment instructions and the student's essay or report. If you have a rubric, it scores each criterion too. Grade and written feedback are generated in seconds.
Review & submit in Canvas
The grade and feedback are filled into Canvas automatically. Make any edits you like, then click Submit. You're done.
One click, done
Click "Grade This Submission" in the Katana side panel and AI fills in the score, rubric ratings, and written feedback automatically.
Instructions & rubric aware
Grades against your assignment instructions and rubric, scoring each criterion precisely. No rubric? Katana grades from your instructions alone.
Your voice
Choose your feedback tone: Professional, Encouraging, Socratic, Skeptical, and more to match your teaching style.
Fully customizable
Set grading strictness, feedback length, late-submission deductions, and custom instructions per assignment.
Nothing submitted is ever stored or used to train AI.
Katana processes each submission in real time through an encrypted connection, generates the grade and feedback, then immediately discards the content. Student work is never retained on our servers, never sold, and never used to train or improve any AI model — period.
We are FERPA-aware and GDPR-ready.
Straightforward, honest pricing
All plans include Claude Sonnet AI, every tone profile, rubric support, and personalized feedback. No hidden fees.
- Essay & report grading
- All tone profiles
- Rubric support
- Personalized feedback
- Essay & report grading
- All tone profiles
- Rubric support
- Personalized feedback
- Essay & report grading
- All tone profiles
- Rubric support
- Personalized feedback
- Essay & report grading
- All tone profiles
- Rubric support
- Personalized feedback
No contracts. No commitments. Cancel or change plans anytime.
Katana was created by university professors who know what it feels like to spend evenings grading hundreds of submissions. We built the tool we wished we had — one that respects your judgment, matches your voice, and gets out of your way.
— The Katana Team