How Good is Subscription Tier?

I am heavily using CC and have few other subscriptions. I have used GLM 5.1 but not directly through Z.AI subscription / GLM Coding Plan.

I'm eying on PRO account but since they have the "first term" discount, I'd like to jump ship and get yearly subscription.

I'm looking to replace my daily driver for personal things. If its speed is comparable to Claude Code and capabilities are nearing Opus 4.6, I'd be more than happy to jump ship. I must say, pricing is a very big deciding factor here.