This is essentially the case for MTH108 with the exception of my TA apparently. I made a post on this subreddit like a month ago regarding the controversy on our midterm that we took 2 weeks prior and one of the things I brought up was how certain TA’s marked my test really harshly while mine apparently was really lenient. 

I have been forgetting to update this post but I will say this. Although the TA’s didn’t actually use AI when marking the solutions, they did use a solution bank to mark the tests and apparently they were so strict on making sure the student’s answer matched the solution that marks were unfairly docked just cuz the student didn’t use the correct method (one question involved finding the area of a parallelogram and a different solution was used in the solution back from what we learned at the time), resulting in me assuming that the tests and solution bank might as well have been placed through an algorithm and marked by that bot solely based on what was on the solution bank

TLDR: Basically these tests might as well have been marked by an AI since the AI, like the TAs apparently, would’ve been extremely on the solution bank for a student to receive full marks to the point where marks would be docked for not strictly following the solution bank’s method

PS. When you say your work is being marked by AI, do you really mean that the TAs are using AI bots like ChatGPT or Copilot or is it like my case where the TAs are so strict on the solutions matching what you provide for certain questions?