there is no comparison between glm 5.2 and opus. First for this glm 5.2 you need a big big resource and that big also came from money so instead you buy the opus subscription and enjoy.
you go to OpenRouter and pay
$0.98 / $3.08per 1M for GLM 5.2 vs $5 / $25per 1M for Opus.
GLM 5.2 gives you OPTIONALITY so you can run it locally, but you can still just pay somebody for it.