I had the opposite experience. I bought the $100 monthly sub from Neuralwatt last month because it was the only economical provider for GLM 5.2. They raised their rates halfway through, and it simultaneously became too slow to use.

I just looked at DeepInfra -- I've got an account there already etc -- and it's at FP4 quant. How much that effects the quality of inference for GLM, I can't say. I could see using it as a backup when other things run out but don't think I'd trust it.