I pay for both Claude and Z.ai right now, and GLM-4.7 is more than capable for what I need. Opus 4.5 is nice but not worth the quota cost for most tasks.

well I feel like all models are converging and maybe claude is good but only time will tell as gemini flash and GLM put pressure on claude/anthropic models

People (here) are definitely comparing it to sonnet so if you take this stance of saving a few dollars, I am sure that you must be having the same opinion of using opus model and nobody should use sonnet too

Personally I am interested in open source models because they would be something which would have genuine value and competition after the bubble bursts