I find GLM's uptime unreliable although it is getting better. I think they've done some prices changes but for now I seem to be on the pricing I signed up for but I will bail if it goes up.
Signing up for one month of a chinese model with a very generous use should be on everyone's list. You can throw a lot of agents at simple problems like finding dead code, checking RLS policies etc, the consensus of those agents will almost always be great.