Brisk Teaching vs Co-grader for giving feedback on students' essays

 Brisk Teaching: https://www.briskteaching.com/zh

Co-grader: https://cograder.com/ai-essay-grader

Tried the above 2 AI tools for responding to students' essays. 

SAME FEATURES: 

- Both allow for uploading a rubric which will be used for providing feedback. 

- Both provide feedback on students' essays. 

DIFFERENCES

- Brisk works as a Chrome extension. Hence, it only works with essays which are opened in the Chrome browser as Google docs. 

- Co-grader is a website. You have to upload students' essays (in WORD) to the website first for it to work on. 

- Brisk is actually a comprehension platform which can do a few other things. 

- Co-grader focuses on Grading Essays. 

- Besides providing feedback, Co-grader can also give a score for each criterion in the rubric uploaded. 

MY EXPERIENCE WITH CO-GRADER SO FAR. 

- Co-grader allows users to set a few parameters (eg, lenient vs strict in scoring). 

- The feedback comments that correspond to each criterion in the rubric uploaded are not bad in quality. 

- As for the scoring, it always sits on the fence with grades, e.g., A-/B+. It also gives a numerical overall score, but the scores for the essays are the same few scores, i.e., they don't accurately distinguish between different essays in numerical scores. 

- The greates problem is that, to me, the scores are not reliable enough, so that during my trial, I had to resort to my own decisions all the time.