"but my vibes-based opinion from using it is that it's basically on par with Claude Opus 5.5 for software engineering." is an outright lie that's qualified by a "well in my opinion.."

unless you're comparing the most extreme specific harnesses to claude code that's just false.

..and I have a lot of disdain toward Anthropic , & I think GLM is great (although too expensive outside the z plans), but it's just wrong by every scorable metric.