While I'm also a huge fan of local LLMs and believe they will be key in the future; I think the claim of "just as good" is hyperbole. They're productively useful tools though, and something worth exploration.
But GLM is SOTA level for code, so it's obviously going to beat all local small models by a lot.
Download opencode GUI or cli. Sign up for Go or Zen plan, choose GLM-5.1 model.