Have you found anything specific that the full-precision quant of GLM 5.2 can't do that Opus 4.8 can? I haven't, so far.

5.2 lives up to the hype. I don't find it to be the best at anything except coding. But for coding... yeah, it lives up to the hype. Not quite Opus 4.8-level, but I would feel comfortable comparing it to 4.5, at least if it had vision capabilities.