It's hard, and not very friendly. I didn't enjoy it. Maybe they have too many candidates. They obsesses on the leetcode or similar problems for interview. You need to first solve code and then talk about project.
The process took 3 weeks. I interviewed at TuSimple (San Diego, CA) in Feb 2022
Interview
Leetcode problems 1 hard problem 1 medium, The interviewer is nice, although question is hard, interviewer will help you a little bit, so I say it's a good interview experience
First introduced myself, then the interviewer asked some questions related to my resume and then introduced their team. The coding problem is hard. The interviewer kept encouraging me and gave some hints. But it took me too long to solve the problem.